# Callbacks > langchain_core → Callbacks ## Classes - [`BaseChatMessageHistory`](https://reference.langchain.com/python/langchain-core/chat_history/BaseChatMessageHistory) - [`InMemoryChatMessageHistory`](https://reference.langchain.com/python/langchain-core/chat_history/InMemoryChatMessageHistory) - [`BaseCrossEncoder`](https://reference.langchain.com/python/langchain-core/cross_encoders/BaseCrossEncoder) - [`AgentAction`](https://reference.langchain.com/python/langchain-core/agents/AgentAction) - [`AgentActionMessageLog`](https://reference.langchain.com/python/langchain-core/agents/AgentActionMessageLog) - [`AgentStep`](https://reference.langchain.com/python/langchain-core/agents/AgentStep) - [`AgentFinish`](https://reference.langchain.com/python/langchain-core/agents/AgentFinish) - [`LangChainException`](https://reference.langchain.com/python/langchain-core/exceptions/LangChainException) - [`TracerException`](https://reference.langchain.com/python/langchain-core/exceptions/TracerException) - [`OutputParserException`](https://reference.langchain.com/python/langchain-core/exceptions/OutputParserException) - [`ContextOverflowError`](https://reference.langchain.com/python/langchain-core/exceptions/ContextOverflowError) - [`ErrorCode`](https://reference.langchain.com/python/langchain-core/exceptions/ErrorCode) - [`Visitor`](https://reference.langchain.com/python/langchain-core/structured_query/Visitor) - [`Expr`](https://reference.langchain.com/python/langchain-core/structured_query/Expr) - [`Operator`](https://reference.langchain.com/python/langchain-core/structured_query/Operator) - [`Comparator`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator) - [`FilterDirective`](https://reference.langchain.com/python/langchain-core/structured_query/FilterDirective) - [`Comparison`](https://reference.langchain.com/python/langchain-core/structured_query/Comparison) - [`Operation`](https://reference.langchain.com/python/langchain-core/structured_query/Operation) - [`StructuredQuery`](https://reference.langchain.com/python/langchain-core/structured_query/StructuredQuery) - [`BaseStore`](https://reference.langchain.com/python/langchain-core/stores/BaseStore) - [`InMemoryBaseStore`](https://reference.langchain.com/python/langchain-core/stores/InMemoryBaseStore) - [`InMemoryStore`](https://reference.langchain.com/python/langchain-core/stores/InMemoryStore) - [`InMemoryByteStore`](https://reference.langchain.com/python/langchain-core/stores/InMemoryByteStore) - [`InvalidKeyException`](https://reference.langchain.com/python/langchain-core/stores/InvalidKeyException) - [`BaseRateLimiter`](https://reference.langchain.com/python/langchain-core/rate_limiters/BaseRateLimiter) - [`InMemoryRateLimiter`](https://reference.langchain.com/python/langchain-core/rate_limiters/InMemoryRateLimiter) - [`BaseCache`](https://reference.langchain.com/python/langchain-core/caches/BaseCache) - [`InMemoryCache`](https://reference.langchain.com/python/langchain-core/caches/InMemoryCache) - [`LangSmithRetrieverParams`](https://reference.langchain.com/python/langchain-core/retrievers/LangSmithRetrieverParams) - [`BaseRetriever`](https://reference.langchain.com/python/langchain-core/retrievers/BaseRetriever) - [`BaseChatLoader`](https://reference.langchain.com/python/langchain-core/chat_loaders/BaseChatLoader) - [`PromptValue`](https://reference.langchain.com/python/langchain-core/prompt_values/PromptValue) - [`StringPromptValue`](https://reference.langchain.com/python/langchain-core/prompt_values/StringPromptValue) - [`ChatPromptValue`](https://reference.langchain.com/python/langchain-core/prompt_values/ChatPromptValue) - [`ImageURL`](https://reference.langchain.com/python/langchain-core/prompt_values/ImageURL) - [`ImagePromptValue`](https://reference.langchain.com/python/langchain-core/prompt_values/ImagePromptValue) - [`ChatPromptValueConcrete`](https://reference.langchain.com/python/langchain-core/prompt_values/ChatPromptValueConcrete) - [`ChatSession`](https://reference.langchain.com/python/langchain-core/chat_sessions/ChatSession) - [`NoLock`](https://reference.langchain.com/python/langchain-core/utils/iter/NoLock) - [`Tee`](https://reference.langchain.com/python/langchain-core/utils/iter/Tee) - [`ChevronError`](https://reference.langchain.com/python/langchain-core/utils/mustache/ChevronError) - [`StrictFormatter`](https://reference.langchain.com/python/langchain-core/utils/formatting/StrictFormatter) - [`FunctionDescription`](https://reference.langchain.com/python/langchain-core/utils/function_calling/FunctionDescription) - [`ToolDescription`](https://reference.langchain.com/python/langchain-core/utils/function_calling/ToolDescription) - [`NoLock`](https://reference.langchain.com/python/langchain-core/utils/aiter/NoLock) - [`Tee`](https://reference.langchain.com/python/langchain-core/utils/aiter/Tee) - [`aclosing`](https://reference.langchain.com/python/langchain-core/utils/aiter/aclosing) - [`RootListenersTracer`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners/RootListenersTracer) - [`AsyncRootListenersTracer`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners/AsyncRootListenersTracer) - [`BaseTracer`](https://reference.langchain.com/python/langchain-core/tracers/base/BaseTracer) - [`AsyncBaseTracer`](https://reference.langchain.com/python/langchain-core/tracers/base/AsyncBaseTracer) - [`LogEntry`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry) - [`RunState`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunState) - [`RunLogPatch`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunLogPatch) - [`RunLog`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunLog) - [`LogStreamCallbackHandler`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler) - [`RunCollectorCallbackHandler`](https://reference.langchain.com/python/langchain-core/tracers/run_collector/RunCollectorCallbackHandler) - [`RunInfo`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/RunInfo) - [`LangChainTracer`](https://reference.langchain.com/python/langchain-core/tracers/langchain/LangChainTracer) - [`EvaluatorCallbackHandler`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler) - [`FunctionCallbackHandler`](https://reference.langchain.com/python/langchain-core/tracers/stdout/FunctionCallbackHandler) - [`ConsoleCallbackHandler`](https://reference.langchain.com/python/langchain-core/tracers/stdout/ConsoleCallbackHandler) - [`LangChainDeprecationWarning`](https://reference.langchain.com/python/langchain-core/_api/deprecation/LangChainDeprecationWarning) - [`LangChainPendingDeprecationWarning`](https://reference.langchain.com/python/langchain-core/_api/deprecation/LangChainPendingDeprecationWarning) - [`LangChainBetaWarning`](https://reference.langchain.com/python/langchain-core/_api/beta_decorator/LangChainBetaWarning) - [`UsageMetadataCallbackHandler`](https://reference.langchain.com/python/langchain-core/callbacks/usage/UsageMetadataCallbackHandler) - [`RetrieverManagerMixin`](https://reference.langchain.com/python/langchain-core/callbacks/base/RetrieverManagerMixin) - [`LLMManagerMixin`](https://reference.langchain.com/python/langchain-core/callbacks/base/LLMManagerMixin) - [`ChainManagerMixin`](https://reference.langchain.com/python/langchain-core/callbacks/base/ChainManagerMixin) - [`ToolManagerMixin`](https://reference.langchain.com/python/langchain-core/callbacks/base/ToolManagerMixin) - [`CallbackManagerMixin`](https://reference.langchain.com/python/langchain-core/callbacks/base/CallbackManagerMixin) - [`RunManagerMixin`](https://reference.langchain.com/python/langchain-core/callbacks/base/RunManagerMixin) - [`BaseCallbackHandler`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackHandler) - [`AsyncCallbackHandler`](https://reference.langchain.com/python/langchain-core/callbacks/base/AsyncCallbackHandler) - [`BaseCallbackManager`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackManager) - [`BaseRunManager`](https://reference.langchain.com/python/langchain-core/callbacks/manager/BaseRunManager) - [`RunManager`](https://reference.langchain.com/python/langchain-core/callbacks/manager/RunManager) - [`ParentRunManager`](https://reference.langchain.com/python/langchain-core/callbacks/manager/ParentRunManager) - [`AsyncRunManager`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncRunManager) - [`AsyncParentRunManager`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncParentRunManager) - [`CallbackManagerForLLMRun`](https://reference.langchain.com/python/langchain-core/callbacks/manager/CallbackManagerForLLMRun) - [`AsyncCallbackManagerForLLMRun`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncCallbackManagerForLLMRun) - [`CallbackManagerForChainRun`](https://reference.langchain.com/python/langchain-core/callbacks/manager/CallbackManagerForChainRun) - [`AsyncCallbackManagerForChainRun`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncCallbackManagerForChainRun) - [`CallbackManagerForToolRun`](https://reference.langchain.com/python/langchain-core/callbacks/manager/CallbackManagerForToolRun) - [`AsyncCallbackManagerForToolRun`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncCallbackManagerForToolRun) - [`CallbackManagerForRetrieverRun`](https://reference.langchain.com/python/langchain-core/callbacks/manager/CallbackManagerForRetrieverRun) - [`AsyncCallbackManagerForRetrieverRun`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncCallbackManagerForRetrieverRun) - [`CallbackManager`](https://reference.langchain.com/python/langchain-core/callbacks/manager/CallbackManager) - [`CallbackManagerForChainGroup`](https://reference.langchain.com/python/langchain-core/callbacks/manager/CallbackManagerForChainGroup) - [`AsyncCallbackManager`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncCallbackManager) - [`AsyncCallbackManagerForChainGroup`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncCallbackManagerForChainGroup) - [`StreamingStdOutCallbackHandler`](https://reference.langchain.com/python/langchain-core/callbacks/streaming_stdout/StreamingStdOutCallbackHandler) - [`FileCallbackHandler`](https://reference.langchain.com/python/langchain-core/callbacks/file/FileCallbackHandler) - [`StdOutCallbackHandler`](https://reference.langchain.com/python/langchain-core/callbacks/stdout/StdOutCallbackHandler) - [`Generation`](https://reference.langchain.com/python/langchain-core/outputs/generation/Generation) - [`GenerationChunk`](https://reference.langchain.com/python/langchain-core/outputs/generation/GenerationChunk) - [`RunInfo`](https://reference.langchain.com/python/langchain-core/outputs/run_info/RunInfo) - [`ChatResult`](https://reference.langchain.com/python/langchain-core/outputs/chat_result/ChatResult) - [`ChatGeneration`](https://reference.langchain.com/python/langchain-core/outputs/chat_generation/ChatGeneration) - [`ChatGenerationChunk`](https://reference.langchain.com/python/langchain-core/outputs/chat_generation/ChatGenerationChunk) - [`LLMResult`](https://reference.langchain.com/python/langchain-core/outputs/llm_result/LLMResult) - [`FewShotPromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotPromptTemplate) - [`FewShotChatMessagePromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotChatMessagePromptTemplate) - [`BaseMessagePromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/message/BaseMessagePromptTemplate) - [`PromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/prompt/PromptTemplate) - [`BasePromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/base/BasePromptTemplate) - [`FewShotPromptWithTemplates`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates/FewShotPromptWithTemplates) - [`StructuredPrompt`](https://reference.langchain.com/python/langchain-core/prompts/structured/StructuredPrompt) - [`DictPromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/dict/DictPromptTemplate) - [`StringPromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/string/StringPromptTemplate) - [`ImagePromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/image/ImagePromptTemplate) - [`MessagesPlaceholder`](https://reference.langchain.com/python/langchain-core/prompts/chat/MessagesPlaceholder) - [`BaseStringMessagePromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/chat/BaseStringMessagePromptTemplate) - [`ChatMessagePromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/chat/ChatMessagePromptTemplate) - [`HumanMessagePromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/chat/HumanMessagePromptTemplate) - [`AIMessagePromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/chat/AIMessagePromptTemplate) - [`SystemMessagePromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/chat/SystemMessagePromptTemplate) - [`BaseChatPromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/chat/BaseChatPromptTemplate) - [`ChatPromptTemplate`](https://reference.langchain.com/python/langchain-core/prompts/chat/ChatPromptTemplate) - [`EventData`](https://reference.langchain.com/python/langchain-core/runnables/schema/EventData) - [`BaseStreamEvent`](https://reference.langchain.com/python/langchain-core/runnables/schema/BaseStreamEvent) - [`StandardStreamEvent`](https://reference.langchain.com/python/langchain-core/runnables/schema/StandardStreamEvent) - [`CustomStreamEvent`](https://reference.langchain.com/python/langchain-core/runnables/schema/CustomStreamEvent) - [`PngDrawer`](https://reference.langchain.com/python/langchain-core/runnables/graph_png/PngDrawer) - [`RunnableBranch`](https://reference.langchain.com/python/langchain-core/runnables/branch/RunnableBranch) - [`Stringifiable`](https://reference.langchain.com/python/langchain-core/runnables/graph/Stringifiable) - [`LabelsDict`](https://reference.langchain.com/python/langchain-core/runnables/graph/LabelsDict) - [`Edge`](https://reference.langchain.com/python/langchain-core/runnables/graph/Edge) - [`Node`](https://reference.langchain.com/python/langchain-core/runnables/graph/Node) - [`Branch`](https://reference.langchain.com/python/langchain-core/runnables/graph/Branch) - [`CurveStyle`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle) - [`NodeStyles`](https://reference.langchain.com/python/langchain-core/runnables/graph/NodeStyles) - [`MermaidDrawMethod`](https://reference.langchain.com/python/langchain-core/runnables/graph/MermaidDrawMethod) - [`Graph`](https://reference.langchain.com/python/langchain-core/runnables/graph/Graph) - [`RunnablePassthrough`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnablePassthrough) - [`RunnableAssign`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnableAssign) - [`RunnablePick`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnablePick) - [`DynamicRunnable`](https://reference.langchain.com/python/langchain-core/runnables/configurable/DynamicRunnable) - [`RunnableConfigurableFields`](https://reference.langchain.com/python/langchain-core/runnables/configurable/RunnableConfigurableFields) - [`StrEnum`](https://reference.langchain.com/python/langchain-core/runnables/configurable/StrEnum) - [`RunnableConfigurableAlternatives`](https://reference.langchain.com/python/langchain-core/runnables/configurable/RunnableConfigurableAlternatives) - [`RouterInput`](https://reference.langchain.com/python/langchain-core/runnables/router/RouterInput) - [`RouterRunnable`](https://reference.langchain.com/python/langchain-core/runnables/router/RouterRunnable) - [`IsLocalDict`](https://reference.langchain.com/python/langchain-core/runnables/utils/IsLocalDict) - [`IsFunctionArgDict`](https://reference.langchain.com/python/langchain-core/runnables/utils/IsFunctionArgDict) - [`NonLocals`](https://reference.langchain.com/python/langchain-core/runnables/utils/NonLocals) - [`FunctionNonLocals`](https://reference.langchain.com/python/langchain-core/runnables/utils/FunctionNonLocals) - [`GetLambdaSource`](https://reference.langchain.com/python/langchain-core/runnables/utils/GetLambdaSource) - [`AddableDict`](https://reference.langchain.com/python/langchain-core/runnables/utils/AddableDict) - [`SupportsAdd`](https://reference.langchain.com/python/langchain-core/runnables/utils/SupportsAdd) - [`ConfigurableField`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableField) - [`ConfigurableFieldSingleOption`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSingleOption) - [`ConfigurableFieldMultiOption`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldMultiOption) - [`ConfigurableFieldSpec`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSpec) - [`Runnable`](https://reference.langchain.com/python/langchain-core/runnables/base/Runnable) - [`RunnableSerializable`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSerializable) - [`RunnableSequence`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSequence) - [`RunnableParallel`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableParallel) - [`RunnableGenerator`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableGenerator) - [`RunnableLambda`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableLambda) - [`RunnableEachBase`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableEachBase) - [`RunnableEach`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableEach) - [`RunnableBindingBase`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase) - [`RunnableBinding`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBinding) - [`ExponentialJitterParams`](https://reference.langchain.com/python/langchain-core/runnables/retry/ExponentialJitterParams) - [`RunnableRetry`](https://reference.langchain.com/python/langchain-core/runnables/retry/RunnableRetry) - [`RunnableWithFallbacks`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks/RunnableWithFallbacks) - [`EmptyDict`](https://reference.langchain.com/python/langchain-core/runnables/config/EmptyDict) - [`RunnableConfig`](https://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig) - [`ContextThreadPoolExecutor`](https://reference.langchain.com/python/langchain-core/runnables/config/ContextThreadPoolExecutor) - [`RunnableWithMessageHistory`](https://reference.langchain.com/python/langchain-core/runnables/history/RunnableWithMessageHistory) - [`VertexViewer`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/VertexViewer) - [`AsciiCanvas`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/AsciiCanvas) - [`BaseLoader`](https://reference.langchain.com/python/langchain-core/document_loaders/base/BaseLoader) - [`BaseBlobParser`](https://reference.langchain.com/python/langchain-core/document_loaders/base/BaseBlobParser) - [`BlobLoader`](https://reference.langchain.com/python/langchain-core/document_loaders/blob_loaders/BlobLoader) - [`LangSmithLoader`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader) - [`Embeddings`](https://reference.langchain.com/python/langchain-core/embeddings/embeddings/Embeddings) - [`FakeEmbeddings`](https://reference.langchain.com/python/langchain-core/embeddings/fake/FakeEmbeddings) - [`DeterministicFakeEmbedding`](https://reference.langchain.com/python/langchain-core/embeddings/fake/DeterministicFakeEmbedding) - [`SSRFPolicy`](https://reference.langchain.com/python/langchain-core/_security/_policy/SSRFPolicy) - [`SSRFSafeTransport`](https://reference.langchain.com/python/langchain-core/_security/_transport/SSRFSafeTransport) - [`SSRFSafeSyncTransport`](https://reference.langchain.com/python/langchain-core/_security/_transport/SSRFSafeSyncTransport) - [`SSRFBlockedError`](https://reference.langchain.com/python/langchain-core/_security/_exceptions/SSRFBlockedError) - [`VectorStore`](https://reference.langchain.com/python/langchain-core/vectorstores/base/VectorStore) - [`VectorStoreRetriever`](https://reference.langchain.com/python/langchain-core/vectorstores/base/VectorStoreRetriever) - [`InMemoryVectorStore`](https://reference.langchain.com/python/langchain-core/vectorstores/in_memory/InMemoryVectorStore) - [`FakeListLLM`](https://reference.langchain.com/python/langchain-core/language_models/fake/FakeListLLM) - [`FakeListLLMError`](https://reference.langchain.com/python/langchain-core/language_models/fake/FakeListLLMError) - [`FakeStreamingListLLM`](https://reference.langchain.com/python/langchain-core/language_models/fake/FakeStreamingListLLM) - [`FakeMessagesListChatModel`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeMessagesListChatModel) - [`FakeListChatModelError`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeListChatModelError) - [`FakeListChatModel`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeListChatModel) - [`FakeChatModel`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeChatModel) - [`GenericFakeChatModel`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/GenericFakeChatModel) - [`ParrotFakeChatModel`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/ParrotFakeChatModel) - [`LangSmithParams`](https://reference.langchain.com/python/langchain-core/language_models/base/LangSmithParams) - [`BaseLanguageModel`](https://reference.langchain.com/python/langchain-core/language_models/base/BaseLanguageModel) - [`SyncProjection`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/SyncProjection) - [`SyncTextProjection`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/SyncTextProjection) - [`AsyncProjection`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/AsyncProjection) - [`ChatModelStream`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/ChatModelStream) - [`AsyncChatModelStream`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/AsyncChatModelStream) - [`BaseChatModel`](https://reference.langchain.com/python/langchain-core/language_models/chat_models/BaseChatModel) - [`SimpleChatModel`](https://reference.langchain.com/python/langchain-core/language_models/chat_models/SimpleChatModel) - [`ParsedDataUri`](https://reference.langchain.com/python/langchain-core/language_models/_utils/ParsedDataUri) - [`BaseLLM`](https://reference.langchain.com/python/langchain-core/language_models/llms/BaseLLM) - [`LLM`](https://reference.langchain.com/python/langchain-core/language_models/llms/LLM) - [`ModelProfile`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile) - [`BaseExampleSelector`](https://reference.langchain.com/python/langchain-core/example_selectors/base/BaseExampleSelector) - [`SemanticSimilarityExampleSelector`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity/SemanticSimilarityExampleSelector) - [`MaxMarginalRelevanceExampleSelector`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity/MaxMarginalRelevanceExampleSelector) - [`LengthBasedExampleSelector`](https://reference.langchain.com/python/langchain-core/example_selectors/length_based/LengthBasedExampleSelector) - [`Reviver`](https://reference.langchain.com/python/langchain-core/load/load/Reviver) - [`BaseSerialized`](https://reference.langchain.com/python/langchain-core/load/serializable/BaseSerialized) - [`SerializedConstructor`](https://reference.langchain.com/python/langchain-core/load/serializable/SerializedConstructor) - [`SerializedSecret`](https://reference.langchain.com/python/langchain-core/load/serializable/SerializedSecret) - [`SerializedNotImplemented`](https://reference.langchain.com/python/langchain-core/load/serializable/SerializedNotImplemented) - [`Serializable`](https://reference.langchain.com/python/langchain-core/load/serializable/Serializable) - [`RecordManager`](https://reference.langchain.com/python/langchain-core/indexing/base/RecordManager) - [`InMemoryRecordManager`](https://reference.langchain.com/python/langchain-core/indexing/base/InMemoryRecordManager) - [`UpsertResponse`](https://reference.langchain.com/python/langchain-core/indexing/base/UpsertResponse) - [`DeleteResponse`](https://reference.langchain.com/python/langchain-core/indexing/base/DeleteResponse) - [`DocumentIndex`](https://reference.langchain.com/python/langchain-core/indexing/base/DocumentIndex) - [`InMemoryDocumentIndex`](https://reference.langchain.com/python/langchain-core/indexing/in_memory/InMemoryDocumentIndex) - [`IndexingException`](https://reference.langchain.com/python/langchain-core/indexing/api/IndexingException) - [`IndexingResult`](https://reference.langchain.com/python/langchain-core/indexing/api/IndexingResult) - [`ToolOutputMixin`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolOutputMixin) - [`ToolMessage`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolMessage) - [`ToolMessageChunk`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolMessageChunk) - [`ToolCall`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCall) - [`ToolCallChunk`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCallChunk) - [`FunctionMessage`](https://reference.langchain.com/python/langchain-core/messages/function/FunctionMessage) - [`FunctionMessageChunk`](https://reference.langchain.com/python/langchain-core/messages/function/FunctionMessageChunk) - [`InputTokenDetails`](https://reference.langchain.com/python/langchain-core/messages/ai/InputTokenDetails) - [`OutputTokenDetails`](https://reference.langchain.com/python/langchain-core/messages/ai/OutputTokenDetails) - [`UsageMetadata`](https://reference.langchain.com/python/langchain-core/messages/ai/UsageMetadata) - [`AIMessage`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessage) - [`AIMessageChunk`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessageChunk) - [`RemoveMessage`](https://reference.langchain.com/python/langchain-core/messages/modifier/RemoveMessage) - [`TextAccessor`](https://reference.langchain.com/python/langchain-core/messages/base/TextAccessor) - [`BaseMessage`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessage) - [`BaseMessageChunk`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessageChunk) - [`SystemMessage`](https://reference.langchain.com/python/langchain-core/messages/system/SystemMessage) - [`SystemMessageChunk`](https://reference.langchain.com/python/langchain-core/messages/system/SystemMessageChunk) - [`Citation`](https://reference.langchain.com/python/langchain-core/messages/content/Citation) - [`NonStandardAnnotation`](https://reference.langchain.com/python/langchain-core/messages/content/NonStandardAnnotation) - [`TextContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/TextContentBlock) - [`ToolCall`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCall) - [`ToolCallChunk`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCallChunk) - [`InvalidToolCall`](https://reference.langchain.com/python/langchain-core/messages/content/InvalidToolCall) - [`ServerToolCall`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCall) - [`ServerToolCallChunk`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCallChunk) - [`ServerToolResult`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolResult) - [`ReasoningContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/ReasoningContentBlock) - [`ImageContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/ImageContentBlock) - [`VideoContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/VideoContentBlock) - [`AudioContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/AudioContentBlock) - [`PlainTextContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock) - [`FileContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/FileContentBlock) - [`NonStandardContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/NonStandardContentBlock) - [`ChatMessage`](https://reference.langchain.com/python/langchain-core/messages/chat/ChatMessage) - [`ChatMessageChunk`](https://reference.langchain.com/python/langchain-core/messages/chat/ChatMessageChunk) - [`HumanMessage`](https://reference.langchain.com/python/langchain-core/messages/human/HumanMessage) - [`HumanMessageChunk`](https://reference.langchain.com/python/langchain-core/messages/human/HumanMessageChunk) - [`BaseDocumentCompressor`](https://reference.langchain.com/python/langchain-core/documents/compressor/BaseDocumentCompressor) - [`BaseMedia`](https://reference.langchain.com/python/langchain-core/documents/base/BaseMedia) - [`Blob`](https://reference.langchain.com/python/langchain-core/documents/base/Blob) - [`Document`](https://reference.langchain.com/python/langchain-core/documents/base/Document) - [`BaseDocumentTransformer`](https://reference.langchain.com/python/langchain-core/documents/transformers/BaseDocumentTransformer) - [`BaseLLMOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/base/BaseLLMOutputParser) - [`BaseGenerationOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/base/BaseGenerationOutputParser) - [`BaseOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/base/BaseOutputParser) - [`BaseTransformOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/transform/BaseTransformOutputParser) - [`BaseCumulativeTransformOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/transform/BaseCumulativeTransformOutputParser) - [`PydanticOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/pydantic/PydanticOutputParser) - [`JsonOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/json/JsonOutputParser) - [`ListOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/list/ListOutputParser) - [`CommaSeparatedListOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/list/CommaSeparatedListOutputParser) - [`NumberedListOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/list/NumberedListOutputParser) - [`MarkdownListOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/list/MarkdownListOutputParser) - [`OutputFunctionsParser`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/OutputFunctionsParser) - [`JsonOutputFunctionsParser`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/JsonOutputFunctionsParser) - [`JsonKeyOutputFunctionsParser`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/JsonKeyOutputFunctionsParser) - [`PydanticOutputFunctionsParser`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/PydanticOutputFunctionsParser) - [`PydanticAttrOutputFunctionsParser`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/PydanticAttrOutputFunctionsParser) - [`StrOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/string/StrOutputParser) - [`JsonOutputToolsParser`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/JsonOutputToolsParser) - [`JsonOutputKeyToolsParser`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/JsonOutputKeyToolsParser) - [`PydanticToolsParser`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/PydanticToolsParser) - [`XMLOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/XMLOutputParser) - [`RetrieverInput`](https://reference.langchain.com/python/langchain-core/tools/retriever/RetrieverInput) - [`SchemaAnnotationError`](https://reference.langchain.com/python/langchain-core/tools/base/SchemaAnnotationError) - [`ToolException`](https://reference.langchain.com/python/langchain-core/tools/base/ToolException) - [`BaseTool`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool) - [`InjectedToolArg`](https://reference.langchain.com/python/langchain-core/tools/base/InjectedToolArg) - [`InjectedToolCallId`](https://reference.langchain.com/python/langchain-core/tools/base/InjectedToolCallId) - [`BaseToolkit`](https://reference.langchain.com/python/langchain-core/tools/base/BaseToolkit) - [`StructuredTool`](https://reference.langchain.com/python/langchain-core/tools/structured/StructuredTool) - [`Tool`](https://reference.langchain.com/python/langchain-core/tools/simple/Tool) ## Functions - [`get_runtime_environment()`](https://reference.langchain.com/python/langchain-core/env/get_runtime_environment) - [`import_attr()`](https://reference.langchain.com/python/langchain-core/_import_utils/import_attr) - [`create_message()`](https://reference.langchain.com/python/langchain-core/exceptions/create_message) - [`print_sys_info()`](https://reference.langchain.com/python/langchain-core/sys_info/print_sys_info) - [`set_verbose()`](https://reference.langchain.com/python/langchain-core/globals/set_verbose) - [`get_verbose()`](https://reference.langchain.com/python/langchain-core/globals/get_verbose) - [`set_debug()`](https://reference.langchain.com/python/langchain-core/globals/set_debug) - [`get_debug()`](https://reference.langchain.com/python/langchain-core/globals/get_debug) - [`set_llm_cache()`](https://reference.langchain.com/python/langchain-core/globals/set_llm_cache) - [`get_llm_cache()`](https://reference.langchain.com/python/langchain-core/globals/get_llm_cache) - [`env_var_is_set()`](https://reference.langchain.com/python/langchain-core/utils/env/env_var_is_set) - [`get_from_dict_or_env()`](https://reference.langchain.com/python/langchain-core/utils/env/get_from_dict_or_env) - [`get_from_env()`](https://reference.langchain.com/python/langchain-core/utils/env/get_from_env) - [`merge_dicts()`](https://reference.langchain.com/python/langchain-core/utils/_merge/merge_dicts) - [`merge_lists()`](https://reference.langchain.com/python/langchain-core/utils/_merge/merge_lists) - [`merge_obj()`](https://reference.langchain.com/python/langchain-core/utils/_merge/merge_obj) - [`find_all_links()`](https://reference.langchain.com/python/langchain-core/utils/html/find_all_links) - [`extract_sub_links()`](https://reference.langchain.com/python/langchain-core/utils/html/extract_sub_links) - [`tee_peer()`](https://reference.langchain.com/python/langchain-core/utils/iter/tee_peer) - [`batch_iterate()`](https://reference.langchain.com/python/langchain-core/utils/iter/batch_iterate) - [`grab_literal()`](https://reference.langchain.com/python/langchain-core/utils/mustache/grab_literal) - [`l_sa_check()`](https://reference.langchain.com/python/langchain-core/utils/mustache/l_sa_check) - [`r_sa_check()`](https://reference.langchain.com/python/langchain-core/utils/mustache/r_sa_check) - [`parse_tag()`](https://reference.langchain.com/python/langchain-core/utils/mustache/parse_tag) - [`tokenize()`](https://reference.langchain.com/python/langchain-core/utils/mustache/tokenize) - [`render()`](https://reference.langchain.com/python/langchain-core/utils/mustache/render) - [`xor_args()`](https://reference.langchain.com/python/langchain-core/utils/utils/xor_args) - [`raise_for_status_with_text()`](https://reference.langchain.com/python/langchain-core/utils/utils/raise_for_status_with_text) - [`mock_now()`](https://reference.langchain.com/python/langchain-core/utils/utils/mock_now) - [`guard_import()`](https://reference.langchain.com/python/langchain-core/utils/utils/guard_import) - [`check_package_version()`](https://reference.langchain.com/python/langchain-core/utils/utils/check_package_version) - [`get_pydantic_field_names()`](https://reference.langchain.com/python/langchain-core/utils/utils/get_pydantic_field_names) - [`build_extra_kwargs()`](https://reference.langchain.com/python/langchain-core/utils/utils/build_extra_kwargs) - [`convert_to_secret_str()`](https://reference.langchain.com/python/langchain-core/utils/utils/convert_to_secret_str) - [`from_env()`](https://reference.langchain.com/python/langchain-core/utils/utils/from_env) - [`secret_from_env()`](https://reference.langchain.com/python/langchain-core/utils/utils/secret_from_env) - [`ensure_id()`](https://reference.langchain.com/python/langchain-core/utils/utils/ensure_id) - [`uuid7()`](https://reference.langchain.com/python/langchain-core/utils/uuid/uuid7) - [`stringify_value()`](https://reference.langchain.com/python/langchain-core/utils/strings/stringify_value) - [`stringify_dict()`](https://reference.langchain.com/python/langchain-core/utils/strings/stringify_dict) - [`comma_list()`](https://reference.langchain.com/python/langchain-core/utils/strings/comma_list) - [`sanitize_for_postgres()`](https://reference.langchain.com/python/langchain-core/utils/strings/sanitize_for_postgres) - [`is_interactive_env()`](https://reference.langchain.com/python/langchain-core/utils/interactive_env/is_interactive_env) - [`get_pydantic_major_version()`](https://reference.langchain.com/python/langchain-core/utils/pydantic/get_pydantic_major_version) - [`is_pydantic_v1_subclass()`](https://reference.langchain.com/python/langchain-core/utils/pydantic/is_pydantic_v1_subclass) - [`is_pydantic_v2_subclass()`](https://reference.langchain.com/python/langchain-core/utils/pydantic/is_pydantic_v2_subclass) - [`is_basemodel_subclass()`](https://reference.langchain.com/python/langchain-core/utils/pydantic/is_basemodel_subclass) - [`is_basemodel_instance()`](https://reference.langchain.com/python/langchain-core/utils/pydantic/is_basemodel_instance) - [`pre_init()`](https://reference.langchain.com/python/langchain-core/utils/pydantic/pre_init) - [`get_fields()`](https://reference.langchain.com/python/langchain-core/utils/pydantic/get_fields) - [`create_model()`](https://reference.langchain.com/python/langchain-core/utils/pydantic/create_model) - [`create_model_v2()`](https://reference.langchain.com/python/langchain-core/utils/pydantic/create_model_v2) - [`parse_partial_json()`](https://reference.langchain.com/python/langchain-core/utils/json/parse_partial_json) - [`parse_json_markdown()`](https://reference.langchain.com/python/langchain-core/utils/json/parse_json_markdown) - [`parse_and_check_json_markdown()`](https://reference.langchain.com/python/langchain-core/utils/json/parse_and_check_json_markdown) - [`convert_to_openai_function()`](https://reference.langchain.com/python/langchain-core/utils/function_calling/convert_to_openai_function) - [`convert_to_openai_tool()`](https://reference.langchain.com/python/langchain-core/utils/function_calling/convert_to_openai_tool) - [`convert_to_json_schema()`](https://reference.langchain.com/python/langchain-core/utils/function_calling/convert_to_json_schema) - [`tool_example_to_messages()`](https://reference.langchain.com/python/langchain-core/utils/function_calling/tool_example_to_messages) - [`get_color_mapping()`](https://reference.langchain.com/python/langchain-core/utils/input/get_color_mapping) - [`get_colored_text()`](https://reference.langchain.com/python/langchain-core/utils/input/get_colored_text) - [`get_bolded_text()`](https://reference.langchain.com/python/langchain-core/utils/input/get_bolded_text) - [`print_text()`](https://reference.langchain.com/python/langchain-core/utils/input/print_text) - [`py_anext()`](https://reference.langchain.com/python/langchain-core/utils/aiter/py_anext) - [`tee_peer()`](https://reference.langchain.com/python/langchain-core/utils/aiter/tee_peer) - [`abatch_iterate()`](https://reference.langchain.com/python/langchain-core/utils/aiter/abatch_iterate) - [`dereference_refs()`](https://reference.langchain.com/python/langchain-core/utils/json_schema/dereference_refs) - [`run_to_dict()`](https://reference.langchain.com/python/langchain-core/tracers/_compat/run_to_dict) - [`run_copy()`](https://reference.langchain.com/python/langchain-core/tracers/_compat/run_copy) - [`run_construct()`](https://reference.langchain.com/python/langchain-core/tracers/_compat/run_construct) - [`pydantic_to_dict()`](https://reference.langchain.com/python/langchain-core/tracers/_compat/pydantic_to_dict) - [`pydantic_copy()`](https://reference.langchain.com/python/langchain-core/tracers/_compat/pydantic_copy) - [`tracing_v2_enabled()`](https://reference.langchain.com/python/langchain-core/tracers/context/tracing_v2_enabled) - [`collect_runs()`](https://reference.langchain.com/python/langchain-core/tracers/context/collect_runs) - [`register_configure_hook()`](https://reference.langchain.com/python/langchain-core/tracers/context/register_configure_hook) - [`log_error_once()`](https://reference.langchain.com/python/langchain-core/tracers/langchain/log_error_once) - [`wait_for_all_tracers()`](https://reference.langchain.com/python/langchain-core/tracers/langchain/wait_for_all_tracers) - [`get_client()`](https://reference.langchain.com/python/langchain-core/tracers/langchain/get_client) - [`wait_for_all_evaluators()`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/wait_for_all_evaluators) - [`try_json_stringify()`](https://reference.langchain.com/python/langchain-core/tracers/stdout/try_json_stringify) - [`elapsed()`](https://reference.langchain.com/python/langchain-core/tracers/stdout/elapsed) - [`get_relative_path()`](https://reference.langchain.com/python/langchain-core/_api/path/get_relative_path) - [`as_import_path()`](https://reference.langchain.com/python/langchain-core/_api/path/as_import_path) - [`deprecated()`](https://reference.langchain.com/python/langchain-core/_api/deprecation/deprecated) - [`suppress_langchain_deprecation_warning()`](https://reference.langchain.com/python/langchain-core/_api/deprecation/suppress_langchain_deprecation_warning) - [`warn_deprecated()`](https://reference.langchain.com/python/langchain-core/_api/deprecation/warn_deprecated) - [`surface_langchain_deprecation_warnings()`](https://reference.langchain.com/python/langchain-core/_api/deprecation/surface_langchain_deprecation_warnings) - [`rename_parameter()`](https://reference.langchain.com/python/langchain-core/_api/deprecation/rename_parameter) - [`beta()`](https://reference.langchain.com/python/langchain-core/_api/beta_decorator/beta) - [`suppress_langchain_beta_warning()`](https://reference.langchain.com/python/langchain-core/_api/beta_decorator/suppress_langchain_beta_warning) - [`warn_beta()`](https://reference.langchain.com/python/langchain-core/_api/beta_decorator/warn_beta) - [`surface_langchain_beta_warnings()`](https://reference.langchain.com/python/langchain-core/_api/beta_decorator/surface_langchain_beta_warnings) - [`is_caller_internal()`](https://reference.langchain.com/python/langchain-core/_api/internal/is_caller_internal) - [`get_usage_metadata_callback()`](https://reference.langchain.com/python/langchain-core/callbacks/usage/get_usage_metadata_callback) - [`trace_as_chain_group()`](https://reference.langchain.com/python/langchain-core/callbacks/manager/trace_as_chain_group) - [`atrace_as_chain_group()`](https://reference.langchain.com/python/langchain-core/callbacks/manager/atrace_as_chain_group) - [`shielded()`](https://reference.langchain.com/python/langchain-core/callbacks/manager/shielded) - [`handle_event()`](https://reference.langchain.com/python/langchain-core/callbacks/manager/handle_event) - [`ahandle_event()`](https://reference.langchain.com/python/langchain-core/callbacks/manager/ahandle_event) - [`adispatch_custom_event()`](https://reference.langchain.com/python/langchain-core/callbacks/manager/adispatch_custom_event) - [`dispatch_custom_event()`](https://reference.langchain.com/python/langchain-core/callbacks/manager/dispatch_custom_event) - [`merge_chat_generation_chunks()`](https://reference.langchain.com/python/langchain-core/outputs/chat_generation/merge_chat_generation_chunks) - [`load_prompt_from_config()`](https://reference.langchain.com/python/langchain-core/prompts/loading/load_prompt_from_config) - [`load_prompt()`](https://reference.langchain.com/python/langchain-core/prompts/loading/load_prompt) - [`format_document()`](https://reference.langchain.com/python/langchain-core/prompts/base/format_document) - [`aformat_document()`](https://reference.langchain.com/python/langchain-core/prompts/base/aformat_document) - [`jinja2_formatter()`](https://reference.langchain.com/python/langchain-core/prompts/string/jinja2_formatter) - [`validate_jinja2()`](https://reference.langchain.com/python/langchain-core/prompts/string/validate_jinja2) - [`mustache_formatter()`](https://reference.langchain.com/python/langchain-core/prompts/string/mustache_formatter) - [`mustache_template_vars()`](https://reference.langchain.com/python/langchain-core/prompts/string/mustache_template_vars) - [`mustache_schema()`](https://reference.langchain.com/python/langchain-core/prompts/string/mustache_schema) - [`validate_f_string_template()`](https://reference.langchain.com/python/langchain-core/prompts/string/validate_f_string_template) - [`check_valid_template()`](https://reference.langchain.com/python/langchain-core/prompts/string/check_valid_template) - [`get_template_variables()`](https://reference.langchain.com/python/langchain-core/prompts/string/get_template_variables) - [`is_subsequence()`](https://reference.langchain.com/python/langchain-core/prompts/string/is_subsequence) - [`is_uuid()`](https://reference.langchain.com/python/langchain-core/runnables/graph/is_uuid) - [`node_data_str()`](https://reference.langchain.com/python/langchain-core/runnables/graph/node_data_str) - [`node_data_json()`](https://reference.langchain.com/python/langchain-core/runnables/graph/node_data_json) - [`identity()`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/identity) - [`aidentity()`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/aidentity) - [`prefix_config_spec()`](https://reference.langchain.com/python/langchain-core/runnables/configurable/prefix_config_spec) - [`make_options_spec()`](https://reference.langchain.com/python/langchain-core/runnables/configurable/make_options_spec) - [`gated_coro()`](https://reference.langchain.com/python/langchain-core/runnables/utils/gated_coro) - [`gather_with_concurrency()`](https://reference.langchain.com/python/langchain-core/runnables/utils/gather_with_concurrency) - [`accepts_run_manager()`](https://reference.langchain.com/python/langchain-core/runnables/utils/accepts_run_manager) - [`accepts_config()`](https://reference.langchain.com/python/langchain-core/runnables/utils/accepts_config) - [`accepts_context()`](https://reference.langchain.com/python/langchain-core/runnables/utils/accepts_context) - [`asyncio_accepts_context()`](https://reference.langchain.com/python/langchain-core/runnables/utils/asyncio_accepts_context) - [`coro_with_context()`](https://reference.langchain.com/python/langchain-core/runnables/utils/coro_with_context) - [`get_function_first_arg_dict_keys()`](https://reference.langchain.com/python/langchain-core/runnables/utils/get_function_first_arg_dict_keys) - [`get_lambda_source()`](https://reference.langchain.com/python/langchain-core/runnables/utils/get_lambda_source) - [`get_function_nonlocals()`](https://reference.langchain.com/python/langchain-core/runnables/utils/get_function_nonlocals) - [`indent_lines_after_first()`](https://reference.langchain.com/python/langchain-core/runnables/utils/indent_lines_after_first) - [`add()`](https://reference.langchain.com/python/langchain-core/runnables/utils/add) - [`aadd()`](https://reference.langchain.com/python/langchain-core/runnables/utils/aadd) - [`get_unique_config_specs()`](https://reference.langchain.com/python/langchain-core/runnables/utils/get_unique_config_specs) - [`is_async_generator()`](https://reference.langchain.com/python/langchain-core/runnables/utils/is_async_generator) - [`is_async_callable()`](https://reference.langchain.com/python/langchain-core/runnables/utils/is_async_callable) - [`draw_mermaid()`](https://reference.langchain.com/python/langchain-core/runnables/graph_mermaid/draw_mermaid) - [`draw_mermaid_png()`](https://reference.langchain.com/python/langchain-core/runnables/graph_mermaid/draw_mermaid_png) - [`coerce_to_runnable()`](https://reference.langchain.com/python/langchain-core/runnables/base/coerce_to_runnable) - [`chain()`](https://reference.langchain.com/python/langchain-core/runnables/base/chain) - [`set_config_context()`](https://reference.langchain.com/python/langchain-core/runnables/config/set_config_context) - [`ensure_config()`](https://reference.langchain.com/python/langchain-core/runnables/config/ensure_config) - [`get_config_list()`](https://reference.langchain.com/python/langchain-core/runnables/config/get_config_list) - [`patch_config()`](https://reference.langchain.com/python/langchain-core/runnables/config/patch_config) - [`merge_configs()`](https://reference.langchain.com/python/langchain-core/runnables/config/merge_configs) - [`call_func_with_variable_args()`](https://reference.langchain.com/python/langchain-core/runnables/config/call_func_with_variable_args) - [`acall_func_with_variable_args()`](https://reference.langchain.com/python/langchain-core/runnables/config/acall_func_with_variable_args) - [`get_callback_manager_for_config()`](https://reference.langchain.com/python/langchain-core/runnables/config/get_callback_manager_for_config) - [`get_async_callback_manager_for_config()`](https://reference.langchain.com/python/langchain-core/runnables/config/get_async_callback_manager_for_config) - [`get_executor_for_config()`](https://reference.langchain.com/python/langchain-core/runnables/config/get_executor_for_config) - [`run_in_executor()`](https://reference.langchain.com/python/langchain-core/runnables/config/run_in_executor) - [`draw_ascii()`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/draw_ascii) - [`validate_safe_url()`](https://reference.langchain.com/python/langchain-core/_security/_ssrf_protection/validate_safe_url) - [`is_safe_url()`](https://reference.langchain.com/python/langchain-core/_security/_ssrf_protection/is_safe_url) - [`validate_resolved_ip()`](https://reference.langchain.com/python/langchain-core/_security/_policy/validate_resolved_ip) - [`validate_hostname()`](https://reference.langchain.com/python/langchain-core/_security/_policy/validate_hostname) - [`validate_url()`](https://reference.langchain.com/python/langchain-core/_security/_policy/validate_url) - [`validate_url_sync()`](https://reference.langchain.com/python/langchain-core/_security/_policy/validate_url_sync) - [`ssrf_safe_client()`](https://reference.langchain.com/python/langchain-core/_security/_transport/ssrf_safe_client) - [`ssrf_safe_async_client()`](https://reference.langchain.com/python/langchain-core/_security/_transport/ssrf_safe_async_client) - [`maximal_marginal_relevance()`](https://reference.langchain.com/python/langchain-core/vectorstores/utils/maximal_marginal_relevance) - [`get_tokenizer()`](https://reference.langchain.com/python/langchain-core/language_models/base/get_tokenizer) - [`generate_from_stream()`](https://reference.langchain.com/python/langchain-core/language_models/chat_models/generate_from_stream) - [`agenerate_from_stream()`](https://reference.langchain.com/python/langchain-core/language_models/chat_models/agenerate_from_stream) - [`is_openai_data_block()`](https://reference.langchain.com/python/langchain-core/language_models/_utils/is_openai_data_block) - [`create_base_retry_decorator()`](https://reference.langchain.com/python/langchain-core/language_models/llms/create_base_retry_decorator) - [`get_prompts()`](https://reference.langchain.com/python/langchain-core/language_models/llms/get_prompts) - [`aget_prompts()`](https://reference.langchain.com/python/langchain-core/language_models/llms/aget_prompts) - [`update_cache()`](https://reference.langchain.com/python/langchain-core/language_models/llms/update_cache) - [`aupdate_cache()`](https://reference.langchain.com/python/langchain-core/language_models/llms/aupdate_cache) - [`finalize_tool_call_chunk()`](https://reference.langchain.com/python/langchain-core/language_models/_compat_bridge/finalize_tool_call_chunk) - [`chunks_to_events()`](https://reference.langchain.com/python/langchain-core/language_models/_compat_bridge/chunks_to_events) - [`achunks_to_events()`](https://reference.langchain.com/python/langchain-core/language_models/_compat_bridge/achunks_to_events) - [`message_to_events()`](https://reference.langchain.com/python/langchain-core/language_models/_compat_bridge/message_to_events) - [`amessage_to_events()`](https://reference.langchain.com/python/langchain-core/language_models/_compat_bridge/amessage_to_events) - [`sorted_values()`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity/sorted_values) - [`default_init_validator()`](https://reference.langchain.com/python/langchain-core/load/load/default_init_validator) - [`loads()`](https://reference.langchain.com/python/langchain-core/load/load/loads) - [`load()`](https://reference.langchain.com/python/langchain-core/load/load/load) - [`try_neq_default()`](https://reference.langchain.com/python/langchain-core/load/serializable/try_neq_default) - [`to_json_not_implemented()`](https://reference.langchain.com/python/langchain-core/load/serializable/to_json_not_implemented) - [`default()`](https://reference.langchain.com/python/langchain-core/load/dump/default) - [`dumps()`](https://reference.langchain.com/python/langchain-core/load/dump/dumps) - [`dumpd()`](https://reference.langchain.com/python/langchain-core/load/dump/dumpd) - [`index()`](https://reference.langchain.com/python/langchain-core/indexing/api/index) - [`aindex()`](https://reference.langchain.com/python/langchain-core/indexing/api/aindex) - [`tool_call()`](https://reference.langchain.com/python/langchain-core/messages/tool/tool_call) - [`tool_call_chunk()`](https://reference.langchain.com/python/langchain-core/messages/tool/tool_call_chunk) - [`invalid_tool_call()`](https://reference.langchain.com/python/langchain-core/messages/tool/invalid_tool_call) - [`default_tool_parser()`](https://reference.langchain.com/python/langchain-core/messages/tool/default_tool_parser) - [`default_tool_chunk_parser()`](https://reference.langchain.com/python/langchain-core/messages/tool/default_tool_chunk_parser) - [`get_buffer_string()`](https://reference.langchain.com/python/langchain-core/messages/utils/get_buffer_string) - [`messages_from_dict()`](https://reference.langchain.com/python/langchain-core/messages/utils/messages_from_dict) - [`message_chunk_to_message()`](https://reference.langchain.com/python/langchain-core/messages/utils/message_chunk_to_message) - [`convert_to_messages()`](https://reference.langchain.com/python/langchain-core/messages/utils/convert_to_messages) - [`filter_messages()`](https://reference.langchain.com/python/langchain-core/messages/utils/filter_messages) - [`merge_message_runs()`](https://reference.langchain.com/python/langchain-core/messages/utils/merge_message_runs) - [`trim_messages()`](https://reference.langchain.com/python/langchain-core/messages/utils/trim_messages) - [`convert_to_openai_messages()`](https://reference.langchain.com/python/langchain-core/messages/utils/convert_to_openai_messages) - [`count_tokens_approximately()`](https://reference.langchain.com/python/langchain-core/messages/utils/count_tokens_approximately) - [`add_ai_message_chunks()`](https://reference.langchain.com/python/langchain-core/messages/ai/add_ai_message_chunks) - [`add_usage()`](https://reference.langchain.com/python/langchain-core/messages/ai/add_usage) - [`subtract_usage()`](https://reference.langchain.com/python/langchain-core/messages/ai/subtract_usage) - [`merge_content()`](https://reference.langchain.com/python/langchain-core/messages/base/merge_content) - [`message_to_dict()`](https://reference.langchain.com/python/langchain-core/messages/base/message_to_dict) - [`messages_to_dict()`](https://reference.langchain.com/python/langchain-core/messages/base/messages_to_dict) - [`get_msg_title_repr()`](https://reference.langchain.com/python/langchain-core/messages/base/get_msg_title_repr) - [`is_data_content_block()`](https://reference.langchain.com/python/langchain-core/messages/content/is_data_content_block) - [`create_text_block()`](https://reference.langchain.com/python/langchain-core/messages/content/create_text_block) - [`create_image_block()`](https://reference.langchain.com/python/langchain-core/messages/content/create_image_block) - [`create_video_block()`](https://reference.langchain.com/python/langchain-core/messages/content/create_video_block) - [`create_audio_block()`](https://reference.langchain.com/python/langchain-core/messages/content/create_audio_block) - [`create_file_block()`](https://reference.langchain.com/python/langchain-core/messages/content/create_file_block) - [`create_plaintext_block()`](https://reference.langchain.com/python/langchain-core/messages/content/create_plaintext_block) - [`create_tool_call()`](https://reference.langchain.com/python/langchain-core/messages/content/create_tool_call) - [`create_reasoning_block()`](https://reference.langchain.com/python/langchain-core/messages/content/create_reasoning_block) - [`create_citation()`](https://reference.langchain.com/python/langchain-core/messages/content/create_citation) - [`create_non_standard_block()`](https://reference.langchain.com/python/langchain-core/messages/content/create_non_standard_block) - [`register_translator()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/register_translator) - [`get_translator()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/get_translator) - [`translate_content()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/anthropic/translate_content) - [`translate_content_chunk()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/anthropic/translate_content_chunk) - [`translate_content()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/groq/translate_content) - [`translate_content_chunk()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/groq/translate_content_chunk) - [`translate_content()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/bedrock_converse/translate_content) - [`translate_content_chunk()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/bedrock_converse/translate_content_chunk) - [`convert_to_openai_image_block()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/openai/convert_to_openai_image_block) - [`convert_to_openai_data_block()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/openai/convert_to_openai_data_block) - [`translate_content()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/openai/translate_content) - [`translate_content_chunk()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/openai/translate_content_chunk) - [`translate_grounding_metadata_to_citations()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/google_genai/translate_grounding_metadata_to_citations) - [`translate_content()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/google_genai/translate_content) - [`translate_content_chunk()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/google_genai/translate_content_chunk) - [`translate_content()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/bedrock/translate_content) - [`translate_content_chunk()`](https://reference.langchain.com/python/langchain-core/messages/block_translators/bedrock/translate_content_chunk) - [`droplastn()`](https://reference.langchain.com/python/langchain-core/output_parsers/list/droplastn) - [`parse_tool_call()`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/parse_tool_call) - [`make_invalid_tool_call()`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/make_invalid_tool_call) - [`parse_tool_calls()`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/parse_tool_calls) - [`nested_element()`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/nested_element) - [`create_retriever_tool()`](https://reference.langchain.com/python/langchain-core/tools/retriever/create_retriever_tool) - [`render_text_description()`](https://reference.langchain.com/python/langchain-core/tools/render/render_text_description) - [`render_text_description_and_args()`](https://reference.langchain.com/python/langchain-core/tools/render/render_text_description_and_args) - [`tool()`](https://reference.langchain.com/python/langchain-core/tools/convert/tool) - [`convert_runnable_to_tool()`](https://reference.langchain.com/python/langchain-core/tools/convert/convert_runnable_to_tool) - [`create_schema_from_function()`](https://reference.langchain.com/python/langchain-core/tools/base/create_schema_from_function) - [`get_all_basemodel_annotations()`](https://reference.langchain.com/python/langchain-core/tools/base/get_all_basemodel_annotations) ## Modules - [`langchain_core`](https://reference.langchain.com/python/langchain-core/langchain_core) - [`chat_history`](https://reference.langchain.com/python/langchain-core/chat_history) - [`cross_encoders`](https://reference.langchain.com/python/langchain-core/cross_encoders) - [`env`](https://reference.langchain.com/python/langchain-core/env) - [`agents`](https://reference.langchain.com/python/langchain-core/agents) - [`exceptions`](https://reference.langchain.com/python/langchain-core/exceptions) - [`structured_query`](https://reference.langchain.com/python/langchain-core/structured_query) - [`stores`](https://reference.langchain.com/python/langchain-core/stores) - [`rate_limiters`](https://reference.langchain.com/python/langchain-core/rate_limiters) - [`sys_info`](https://reference.langchain.com/python/langchain-core/sys_info) - [`caches`](https://reference.langchain.com/python/langchain-core/caches) - [`retrievers`](https://reference.langchain.com/python/langchain-core/retrievers) - [`version`](https://reference.langchain.com/python/langchain-core/version) - [`globals`](https://reference.langchain.com/python/langchain-core/globals) - [`chat_loaders`](https://reference.langchain.com/python/langchain-core/chat_loaders) - [`prompt_values`](https://reference.langchain.com/python/langchain-core/prompt_values) - [`chat_sessions`](https://reference.langchain.com/python/langchain-core/chat_sessions) - [`utils`](https://reference.langchain.com/python/langchain-core/utils) - [`env`](https://reference.langchain.com/python/langchain-core/utils/env) - [`html`](https://reference.langchain.com/python/langchain-core/utils/html) - [`iter`](https://reference.langchain.com/python/langchain-core/utils/iter) - [`mustache`](https://reference.langchain.com/python/langchain-core/utils/mustache) - [`usage`](https://reference.langchain.com/python/langchain-core/utils/usage) - [`utils`](https://reference.langchain.com/python/langchain-core/utils/utils) - [`uuid`](https://reference.langchain.com/python/langchain-core/utils/uuid) - [`formatting`](https://reference.langchain.com/python/langchain-core/utils/formatting) - [`strings`](https://reference.langchain.com/python/langchain-core/utils/strings) - [`interactive_env`](https://reference.langchain.com/python/langchain-core/utils/interactive_env) - [`pydantic`](https://reference.langchain.com/python/langchain-core/utils/pydantic) - [`json`](https://reference.langchain.com/python/langchain-core/utils/json) - [`function_calling`](https://reference.langchain.com/python/langchain-core/utils/function_calling) - [`input`](https://reference.langchain.com/python/langchain-core/utils/input) - [`image`](https://reference.langchain.com/python/langchain-core/utils/image) - [`aiter`](https://reference.langchain.com/python/langchain-core/utils/aiter) - [`json_schema`](https://reference.langchain.com/python/langchain-core/utils/json_schema) - [`tracers`](https://reference.langchain.com/python/langchain-core/tracers) - [`root_listeners`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners) - [`core`](https://reference.langchain.com/python/langchain-core/tracers/core) - [`base`](https://reference.langchain.com/python/langchain-core/tracers/base) - [`schemas`](https://reference.langchain.com/python/langchain-core/tracers/schemas) - [`memory_stream`](https://reference.langchain.com/python/langchain-core/tracers/memory_stream) - [`log_stream`](https://reference.langchain.com/python/langchain-core/tracers/log_stream) - [`run_collector`](https://reference.langchain.com/python/langchain-core/tracers/run_collector) - [`context`](https://reference.langchain.com/python/langchain-core/tracers/context) - [`event_stream`](https://reference.langchain.com/python/langchain-core/tracers/event_stream) - [`langchain`](https://reference.langchain.com/python/langchain-core/tracers/langchain) - [`evaluation`](https://reference.langchain.com/python/langchain-core/tracers/evaluation) - [`stdout`](https://reference.langchain.com/python/langchain-core/tracers/stdout) - [`path`](https://reference.langchain.com/python/langchain-core/_api/path) - [`deprecation`](https://reference.langchain.com/python/langchain-core/_api/deprecation) - [`beta_decorator`](https://reference.langchain.com/python/langchain-core/_api/beta_decorator) - [`internal`](https://reference.langchain.com/python/langchain-core/_api/internal) - [`callbacks`](https://reference.langchain.com/python/langchain-core/callbacks) - [`usage`](https://reference.langchain.com/python/langchain-core/callbacks/usage) - [`base`](https://reference.langchain.com/python/langchain-core/callbacks/base) - [`manager`](https://reference.langchain.com/python/langchain-core/callbacks/manager) - [`streaming_stdout`](https://reference.langchain.com/python/langchain-core/callbacks/streaming_stdout) - [`file`](https://reference.langchain.com/python/langchain-core/callbacks/file) - [`stdout`](https://reference.langchain.com/python/langchain-core/callbacks/stdout) - [`outputs`](https://reference.langchain.com/python/langchain-core/outputs) - [`generation`](https://reference.langchain.com/python/langchain-core/outputs/generation) - [`run_info`](https://reference.langchain.com/python/langchain-core/outputs/run_info) - [`chat_result`](https://reference.langchain.com/python/langchain-core/outputs/chat_result) - [`chat_generation`](https://reference.langchain.com/python/langchain-core/outputs/chat_generation) - [`llm_result`](https://reference.langchain.com/python/langchain-core/outputs/llm_result) - [`prompts`](https://reference.langchain.com/python/langchain-core/prompts) - [`few_shot`](https://reference.langchain.com/python/langchain-core/prompts/few_shot) - [`message`](https://reference.langchain.com/python/langchain-core/prompts/message) - [`loading`](https://reference.langchain.com/python/langchain-core/prompts/loading) - [`prompt`](https://reference.langchain.com/python/langchain-core/prompts/prompt) - [`base`](https://reference.langchain.com/python/langchain-core/prompts/base) - [`few_shot_with_templates`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates) - [`structured`](https://reference.langchain.com/python/langchain-core/prompts/structured) - [`dict`](https://reference.langchain.com/python/langchain-core/prompts/dict) - [`string`](https://reference.langchain.com/python/langchain-core/prompts/string) - [`image`](https://reference.langchain.com/python/langchain-core/prompts/image) - [`chat`](https://reference.langchain.com/python/langchain-core/prompts/chat) - [`runnables`](https://reference.langchain.com/python/langchain-core/runnables) - [`schema`](https://reference.langchain.com/python/langchain-core/runnables/schema) - [`graph_png`](https://reference.langchain.com/python/langchain-core/runnables/graph_png) - [`branch`](https://reference.langchain.com/python/langchain-core/runnables/branch) - [`graph`](https://reference.langchain.com/python/langchain-core/runnables/graph) - [`passthrough`](https://reference.langchain.com/python/langchain-core/runnables/passthrough) - [`configurable`](https://reference.langchain.com/python/langchain-core/runnables/configurable) - [`router`](https://reference.langchain.com/python/langchain-core/runnables/router) - [`utils`](https://reference.langchain.com/python/langchain-core/runnables/utils) - [`graph_mermaid`](https://reference.langchain.com/python/langchain-core/runnables/graph_mermaid) - [`base`](https://reference.langchain.com/python/langchain-core/runnables/base) - [`retry`](https://reference.langchain.com/python/langchain-core/runnables/retry) - [`fallbacks`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks) - [`config`](https://reference.langchain.com/python/langchain-core/runnables/config) - [`history`](https://reference.langchain.com/python/langchain-core/runnables/history) - [`graph_ascii`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii) - [`document_loaders`](https://reference.langchain.com/python/langchain-core/document_loaders) - [`base`](https://reference.langchain.com/python/langchain-core/document_loaders/base) - [`blob_loaders`](https://reference.langchain.com/python/langchain-core/document_loaders/blob_loaders) - [`langsmith`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith) - [`embeddings`](https://reference.langchain.com/python/langchain-core/embeddings) - [`embeddings`](https://reference.langchain.com/python/langchain-core/embeddings/embeddings) - [`fake`](https://reference.langchain.com/python/langchain-core/embeddings/fake) - [`vectorstores`](https://reference.langchain.com/python/langchain-core/vectorstores) - [`utils`](https://reference.langchain.com/python/langchain-core/vectorstores/utils) - [`base`](https://reference.langchain.com/python/langchain-core/vectorstores/base) - [`in_memory`](https://reference.langchain.com/python/langchain-core/vectorstores/in_memory) - [`language_models`](https://reference.langchain.com/python/langchain-core/language_models) - [`fake`](https://reference.langchain.com/python/langchain-core/language_models/fake) - [`fake_chat_models`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models) - [`base`](https://reference.langchain.com/python/langchain-core/language_models/base) - [`chat_model_stream`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream) - [`chat_models`](https://reference.langchain.com/python/langchain-core/language_models/chat_models) - [`llms`](https://reference.langchain.com/python/langchain-core/language_models/llms) - [`model_profile`](https://reference.langchain.com/python/langchain-core/language_models/model_profile) - [`example_selectors`](https://reference.langchain.com/python/langchain-core/example_selectors) - [`base`](https://reference.langchain.com/python/langchain-core/example_selectors/base) - [`semantic_similarity`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity) - [`length_based`](https://reference.langchain.com/python/langchain-core/example_selectors/length_based) - [`load`](https://reference.langchain.com/python/langchain-core/load) - [`load`](https://reference.langchain.com/python/langchain-core/load/load) - [`serializable`](https://reference.langchain.com/python/langchain-core/load/serializable) - [`dump`](https://reference.langchain.com/python/langchain-core/load/dump) - [`mapping`](https://reference.langchain.com/python/langchain-core/load/mapping) - [`indexing`](https://reference.langchain.com/python/langchain-core/indexing) - [`base`](https://reference.langchain.com/python/langchain-core/indexing/base) - [`in_memory`](https://reference.langchain.com/python/langchain-core/indexing/in_memory) - [`api`](https://reference.langchain.com/python/langchain-core/indexing/api) - [`messages`](https://reference.langchain.com/python/langchain-core/messages) - [`tool`](https://reference.langchain.com/python/langchain-core/messages/tool) - [`function`](https://reference.langchain.com/python/langchain-core/messages/function) - [`utils`](https://reference.langchain.com/python/langchain-core/messages/utils) - [`ai`](https://reference.langchain.com/python/langchain-core/messages/ai) - [`modifier`](https://reference.langchain.com/python/langchain-core/messages/modifier) - [`base`](https://reference.langchain.com/python/langchain-core/messages/base) - [`system`](https://reference.langchain.com/python/langchain-core/messages/system) - [`content`](https://reference.langchain.com/python/langchain-core/messages/content) - [`chat`](https://reference.langchain.com/python/langchain-core/messages/chat) - [`human`](https://reference.langchain.com/python/langchain-core/messages/human) - [`block_translators`](https://reference.langchain.com/python/langchain-core/messages/block_translators) - [`anthropic`](https://reference.langchain.com/python/langchain-core/messages/block_translators/anthropic) - [`groq`](https://reference.langchain.com/python/langchain-core/messages/block_translators/groq) - [`bedrock_converse`](https://reference.langchain.com/python/langchain-core/messages/block_translators/bedrock_converse) - [`google_vertexai`](https://reference.langchain.com/python/langchain-core/messages/block_translators/google_vertexai) - [`langchain_v0`](https://reference.langchain.com/python/langchain-core/messages/block_translators/langchain_v0) - [`openai`](https://reference.langchain.com/python/langchain-core/messages/block_translators/openai) - [`google_genai`](https://reference.langchain.com/python/langchain-core/messages/block_translators/google_genai) - [`bedrock`](https://reference.langchain.com/python/langchain-core/messages/block_translators/bedrock) - [`documents`](https://reference.langchain.com/python/langchain-core/documents) - [`compressor`](https://reference.langchain.com/python/langchain-core/documents/compressor) - [`base`](https://reference.langchain.com/python/langchain-core/documents/base) - [`transformers`](https://reference.langchain.com/python/langchain-core/documents/transformers) - [`output_parsers`](https://reference.langchain.com/python/langchain-core/output_parsers) - [`base`](https://reference.langchain.com/python/langchain-core/output_parsers/base) - [`transform`](https://reference.langchain.com/python/langchain-core/output_parsers/transform) - [`pydantic`](https://reference.langchain.com/python/langchain-core/output_parsers/pydantic) - [`json`](https://reference.langchain.com/python/langchain-core/output_parsers/json) - [`list`](https://reference.langchain.com/python/langchain-core/output_parsers/list) - [`openai_functions`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions) - [`format_instructions`](https://reference.langchain.com/python/langchain-core/output_parsers/format_instructions) - [`string`](https://reference.langchain.com/python/langchain-core/output_parsers/string) - [`openai_tools`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools) - [`xml`](https://reference.langchain.com/python/langchain-core/output_parsers/xml) - [`tools`](https://reference.langchain.com/python/langchain-core/tools) - [`retriever`](https://reference.langchain.com/python/langchain-core/tools/retriever) - [`render`](https://reference.langchain.com/python/langchain-core/tools/render) - [`convert`](https://reference.langchain.com/python/langchain-core/tools/convert) - [`base`](https://reference.langchain.com/python/langchain-core/tools/base) - [`structured`](https://reference.langchain.com/python/langchain-core/tools/structured) - [`simple`](https://reference.langchain.com/python/langchain-core/tools/simple) ## Types - [`Scopes`](https://reference.langchain.com/python/langchain-core/utils/mustache/Scopes) - [`Listener`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners/Listener) - [`AsyncListener`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners/AsyncListener) - [`Callbacks`](https://reference.langchain.com/python/langchain-core/callbacks/base/Callbacks) - [`MessageLike`](https://reference.langchain.com/python/langchain-core/prompts/chat/MessageLike) - [`MessageLikeRepresentation`](https://reference.langchain.com/python/langchain-core/prompts/chat/MessageLikeRepresentation) - [`StreamEvent`](https://reference.langchain.com/python/langchain-core/runnables/schema/StreamEvent) - [`AnyConfigurableField`](https://reference.langchain.com/python/langchain-core/runnables/utils/AnyConfigurableField) - [`RunnableLike`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableLike) - [`MessagesOrDictWithMessages`](https://reference.langchain.com/python/langchain-core/runnables/history/MessagesOrDictWithMessages) - [`Matrix`](https://reference.langchain.com/python/langchain-core/vectorstores/utils/Matrix) - [`LanguageModelInput`](https://reference.langchain.com/python/langchain-core/language_models/base/LanguageModelInput) - [`LanguageModelOutput`](https://reference.langchain.com/python/langchain-core/language_models/base/LanguageModelOutput) - [`MessageLikeRepresentation`](https://reference.langchain.com/python/langchain-core/messages/utils/MessageLikeRepresentation) - [`Annotation`](https://reference.langchain.com/python/langchain-core/messages/content/Annotation) - [`DataContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/DataContentBlock) - [`ToolContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/ToolContentBlock) - [`ContentBlock`](https://reference.langchain.com/python/langchain-core/messages/content/ContentBlock) - [`PathLike`](https://reference.langchain.com/python/langchain-core/documents/base/PathLike) - [`PydanticBaseModel`](https://reference.langchain.com/python/langchain-core/output_parsers/json/PydanticBaseModel) - [`ArgsSchema`](https://reference.langchain.com/python/langchain-core/tools/base/ArgsSchema) ## Constants - [`messages`](https://reference.langchain.com/python/langchain-core/chat_history/BaseChatMessageHistory/messages) - [`messages`](https://reference.langchain.com/python/langchain-core/chat_history/InMemoryChatMessageHistory/messages) - [`tool`](https://reference.langchain.com/python/langchain-core/agents/AgentAction/tool) - [`tool_input`](https://reference.langchain.com/python/langchain-core/agents/AgentAction/tool_input) - [`log`](https://reference.langchain.com/python/langchain-core/agents/AgentAction/log) - [`type`](https://reference.langchain.com/python/langchain-core/agents/AgentAction/type) - [`messages`](https://reference.langchain.com/python/langchain-core/agents/AgentAction/messages) - [`message_log`](https://reference.langchain.com/python/langchain-core/agents/AgentActionMessageLog/message_log) - [`type`](https://reference.langchain.com/python/langchain-core/agents/AgentActionMessageLog/type) - [`action`](https://reference.langchain.com/python/langchain-core/agents/AgentStep/action) - [`observation`](https://reference.langchain.com/python/langchain-core/agents/AgentStep/observation) - [`messages`](https://reference.langchain.com/python/langchain-core/agents/AgentStep/messages) - [`return_values`](https://reference.langchain.com/python/langchain-core/agents/AgentFinish/return_values) - [`log`](https://reference.langchain.com/python/langchain-core/agents/AgentFinish/log) - [`type`](https://reference.langchain.com/python/langchain-core/agents/AgentFinish/type) - [`messages`](https://reference.langchain.com/python/langchain-core/agents/AgentFinish/messages) - [`observation`](https://reference.langchain.com/python/langchain-core/exceptions/OutputParserException/observation) - [`llm_output`](https://reference.langchain.com/python/langchain-core/exceptions/OutputParserException/llm_output) - [`send_to_llm`](https://reference.langchain.com/python/langchain-core/exceptions/OutputParserException/send_to_llm) - [`INVALID_PROMPT_INPUT`](https://reference.langchain.com/python/langchain-core/exceptions/ErrorCode/INVALID_PROMPT_INPUT) - [`INVALID_TOOL_RESULTS`](https://reference.langchain.com/python/langchain-core/exceptions/ErrorCode/INVALID_TOOL_RESULTS) - [`MESSAGE_COERCION_FAILURE`](https://reference.langchain.com/python/langchain-core/exceptions/ErrorCode/MESSAGE_COERCION_FAILURE) - [`MODEL_AUTHENTICATION`](https://reference.langchain.com/python/langchain-core/exceptions/ErrorCode/MODEL_AUTHENTICATION) - [`MODEL_NOT_FOUND`](https://reference.langchain.com/python/langchain-core/exceptions/ErrorCode/MODEL_NOT_FOUND) - [`MODEL_RATE_LIMIT`](https://reference.langchain.com/python/langchain-core/exceptions/ErrorCode/MODEL_RATE_LIMIT) - [`OUTPUT_PARSING_FAILURE`](https://reference.langchain.com/python/langchain-core/exceptions/ErrorCode/OUTPUT_PARSING_FAILURE) - [`allowed_comparators`](https://reference.langchain.com/python/langchain-core/structured_query/Visitor/allowed_comparators) - [`allowed_operators`](https://reference.langchain.com/python/langchain-core/structured_query/Visitor/allowed_operators) - [`AND`](https://reference.langchain.com/python/langchain-core/structured_query/Operator/AND) - [`OR`](https://reference.langchain.com/python/langchain-core/structured_query/Operator/OR) - [`NOT`](https://reference.langchain.com/python/langchain-core/structured_query/Operator/NOT) - [`EQ`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator/EQ) - [`NE`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator/NE) - [`GT`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator/GT) - [`GTE`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator/GTE) - [`LT`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator/LT) - [`LTE`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator/LTE) - [`CONTAIN`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator/CONTAIN) - [`LIKE`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator/LIKE) - [`IN`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator/IN) - [`NIN`](https://reference.langchain.com/python/langchain-core/structured_query/Comparator/NIN) - [`comparator`](https://reference.langchain.com/python/langchain-core/structured_query/Comparison/comparator) - [`attribute`](https://reference.langchain.com/python/langchain-core/structured_query/Comparison/attribute) - [`value`](https://reference.langchain.com/python/langchain-core/structured_query/Comparison/value) - [`operator`](https://reference.langchain.com/python/langchain-core/structured_query/Operation/operator) - [`arguments`](https://reference.langchain.com/python/langchain-core/structured_query/Operation/arguments) - [`query`](https://reference.langchain.com/python/langchain-core/structured_query/StructuredQuery/query) - [`filter`](https://reference.langchain.com/python/langchain-core/structured_query/StructuredQuery/filter) - [`limit`](https://reference.langchain.com/python/langchain-core/structured_query/StructuredQuery/limit) - [`K`](https://reference.langchain.com/python/langchain-core/stores/K) - [`V`](https://reference.langchain.com/python/langchain-core/stores/V) - [`ByteStore`](https://reference.langchain.com/python/langchain-core/stores/ByteStore) - [`store`](https://reference.langchain.com/python/langchain-core/stores/InMemoryBaseStore/store) - [`requests_per_second`](https://reference.langchain.com/python/langchain-core/rate_limiters/InMemoryRateLimiter/requests_per_second) - [`available_tokens`](https://reference.langchain.com/python/langchain-core/rate_limiters/InMemoryRateLimiter/available_tokens) - [`max_bucket_size`](https://reference.langchain.com/python/langchain-core/rate_limiters/InMemoryRateLimiter/max_bucket_size) - [`last`](https://reference.langchain.com/python/langchain-core/rate_limiters/InMemoryRateLimiter/last) - [`check_every_n_seconds`](https://reference.langchain.com/python/langchain-core/rate_limiters/InMemoryRateLimiter/check_every_n_seconds) - [`RETURN_VAL_TYPE`](https://reference.langchain.com/python/langchain-core/caches/RETURN_VAL_TYPE) - [`RetrieverInput`](https://reference.langchain.com/python/langchain-core/retrievers/RetrieverInput) - [`RetrieverOutput`](https://reference.langchain.com/python/langchain-core/retrievers/RetrieverOutput) - [`RetrieverLike`](https://reference.langchain.com/python/langchain-core/retrievers/RetrieverLike) - [`RetrieverOutputLike`](https://reference.langchain.com/python/langchain-core/retrievers/RetrieverOutputLike) - [`ls_retriever_name`](https://reference.langchain.com/python/langchain-core/retrievers/LangSmithRetrieverParams/ls_retriever_name) - [`ls_vector_store_provider`](https://reference.langchain.com/python/langchain-core/retrievers/LangSmithRetrieverParams/ls_vector_store_provider) - [`ls_embedding_provider`](https://reference.langchain.com/python/langchain-core/retrievers/LangSmithRetrieverParams/ls_embedding_provider) - [`ls_embedding_model`](https://reference.langchain.com/python/langchain-core/retrievers/LangSmithRetrieverParams/ls_embedding_model) - [`model_config`](https://reference.langchain.com/python/langchain-core/retrievers/BaseRetriever/model_config) - [`tags`](https://reference.langchain.com/python/langchain-core/retrievers/BaseRetriever/tags) - [`metadata`](https://reference.langchain.com/python/langchain-core/retrievers/BaseRetriever/metadata) - [`VERSION`](https://reference.langchain.com/python/langchain-core/version/VERSION) - [`text`](https://reference.langchain.com/python/langchain-core/prompt_values/StringPromptValue/text) - [`type`](https://reference.langchain.com/python/langchain-core/prompt_values/StringPromptValue/type) - [`messages`](https://reference.langchain.com/python/langchain-core/prompt_values/ChatPromptValue/messages) - [`detail`](https://reference.langchain.com/python/langchain-core/prompt_values/ImageURL/detail) - [`url`](https://reference.langchain.com/python/langchain-core/prompt_values/ImageURL/url) - [`image_url`](https://reference.langchain.com/python/langchain-core/prompt_values/ImagePromptValue/image_url) - [`type`](https://reference.langchain.com/python/langchain-core/prompt_values/ImagePromptValue/type) - [`messages`](https://reference.langchain.com/python/langchain-core/prompt_values/ChatPromptValueConcrete/messages) - [`type`](https://reference.langchain.com/python/langchain-core/prompt_values/ChatPromptValueConcrete/type) - [`messages`](https://reference.langchain.com/python/langchain-core/chat_sessions/ChatSession/messages) - [`functions`](https://reference.langchain.com/python/langchain-core/chat_sessions/ChatSession/functions) - [`logger`](https://reference.langchain.com/python/langchain-core/utils/html/logger) - [`PREFIXES_TO_IGNORE`](https://reference.langchain.com/python/langchain-core/utils/html/PREFIXES_TO_IGNORE) - [`SUFFIXES_TO_IGNORE`](https://reference.langchain.com/python/langchain-core/utils/html/SUFFIXES_TO_IGNORE) - [`SUFFIXES_TO_IGNORE_REGEX`](https://reference.langchain.com/python/langchain-core/utils/html/SUFFIXES_TO_IGNORE_REGEX) - [`PREFIXES_TO_IGNORE_REGEX`](https://reference.langchain.com/python/langchain-core/utils/html/PREFIXES_TO_IGNORE_REGEX) - [`DEFAULT_LINK_REGEX`](https://reference.langchain.com/python/langchain-core/utils/html/DEFAULT_LINK_REGEX) - [`T`](https://reference.langchain.com/python/langchain-core/utils/iter/T) - [`safetee`](https://reference.langchain.com/python/langchain-core/utils/iter/safetee) - [`logger`](https://reference.langchain.com/python/langchain-core/utils/mustache/logger) - [`g_token_cache`](https://reference.langchain.com/python/langchain-core/utils/mustache/g_token_cache) - [`EMPTY_DICT`](https://reference.langchain.com/python/langchain-core/utils/mustache/EMPTY_DICT) - [`LC_AUTO_PREFIX`](https://reference.langchain.com/python/langchain-core/utils/utils/LC_AUTO_PREFIX) - [`LC_ID_PREFIX`](https://reference.langchain.com/python/langchain-core/utils/utils/LC_ID_PREFIX) - [`formatter`](https://reference.langchain.com/python/langchain-core/utils/formatting/formatter) - [`PYDANTIC_VERSION`](https://reference.langchain.com/python/langchain-core/utils/pydantic/PYDANTIC_VERSION) - [`PYDANTIC_MAJOR_VERSION`](https://reference.langchain.com/python/langchain-core/utils/pydantic/PYDANTIC_MAJOR_VERSION) - [`PYDANTIC_MINOR_VERSION`](https://reference.langchain.com/python/langchain-core/utils/pydantic/PYDANTIC_MINOR_VERSION) - [`IS_PYDANTIC_V1`](https://reference.langchain.com/python/langchain-core/utils/pydantic/IS_PYDANTIC_V1) - [`IS_PYDANTIC_V2`](https://reference.langchain.com/python/langchain-core/utils/pydantic/IS_PYDANTIC_V2) - [`PydanticBaseModel`](https://reference.langchain.com/python/langchain-core/utils/pydantic/PydanticBaseModel) - [`TypeBaseModel`](https://reference.langchain.com/python/langchain-core/utils/pydantic/TypeBaseModel) - [`TBaseModel`](https://reference.langchain.com/python/langchain-core/utils/pydantic/TBaseModel) - [`NO_DEFAULT`](https://reference.langchain.com/python/langchain-core/utils/pydantic/NO_DEFAULT) - [`logger`](https://reference.langchain.com/python/langchain-core/utils/function_calling/logger) - [`PYTHON_TO_JSON_TYPES`](https://reference.langchain.com/python/langchain-core/utils/function_calling/PYTHON_TO_JSON_TYPES) - [`name`](https://reference.langchain.com/python/langchain-core/utils/function_calling/FunctionDescription/name) - [`description`](https://reference.langchain.com/python/langchain-core/utils/function_calling/FunctionDescription/description) - [`parameters`](https://reference.langchain.com/python/langchain-core/utils/function_calling/FunctionDescription/parameters) - [`type`](https://reference.langchain.com/python/langchain-core/utils/function_calling/ToolDescription/type) - [`function`](https://reference.langchain.com/python/langchain-core/utils/function_calling/ToolDescription/function) - [`T`](https://reference.langchain.com/python/langchain-core/utils/aiter/T) - [`atee`](https://reference.langchain.com/python/langchain-core/utils/aiter/atee) - [`thing`](https://reference.langchain.com/python/langchain-core/utils/aiter/aclosing/thing) - [`log_missing_parent`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners/RootListenersTracer/log_missing_parent) - [`config`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners/RootListenersTracer/config) - [`root_id`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners/RootListenersTracer/root_id) - [`log_missing_parent`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners/AsyncRootListenersTracer/log_missing_parent) - [`config`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners/AsyncRootListenersTracer/config) - [`root_id`](https://reference.langchain.com/python/langchain-core/tracers/root_listeners/AsyncRootListenersTracer/root_id) - [`logger`](https://reference.langchain.com/python/langchain-core/tracers/core/logger) - [`SCHEMA_FORMAT_TYPE`](https://reference.langchain.com/python/langchain-core/tracers/core/SCHEMA_FORMAT_TYPE) - [`log_missing_parent`](https://reference.langchain.com/python/langchain-core/tracers/core/_TracerCore/log_missing_parent) - [`run_map`](https://reference.langchain.com/python/langchain-core/tracers/core/_TracerCore/run_map) - [`order_map`](https://reference.langchain.com/python/langchain-core/tracers/core/_TracerCore/order_map) - [`T`](https://reference.langchain.com/python/langchain-core/tracers/_streaming/T) - [`logger`](https://reference.langchain.com/python/langchain-core/tracers/base/logger) - [`Run`](https://reference.langchain.com/python/langchain-core/tracers/schemas/Run) - [`T`](https://reference.langchain.com/python/langchain-core/tracers/memory_stream/T) - [`T`](https://reference.langchain.com/python/langchain-core/tracers/_compat/T) - [`id`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/id) - [`name`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/name) - [`type`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/type) - [`tags`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/tags) - [`metadata`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/metadata) - [`start_time`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/start_time) - [`streamed_output_str`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/streamed_output_str) - [`streamed_output`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/streamed_output) - [`inputs`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/inputs) - [`final_output`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/final_output) - [`end_time`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogEntry/end_time) - [`id`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunState/id) - [`streamed_output`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunState/streamed_output) - [`final_output`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunState/final_output) - [`name`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunState/name) - [`type`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunState/type) - [`logs`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunState/logs) - [`ops`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunLogPatch/ops) - [`state`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/RunLog/state) - [`T`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/T) - [`auto_close`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/auto_close) - [`include_names`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/include_names) - [`include_types`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/include_types) - [`include_tags`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/include_tags) - [`exclude_names`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/exclude_names) - [`exclude_types`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/exclude_types) - [`exclude_tags`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/exclude_tags) - [`lock`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/lock) - [`send_stream`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/send_stream) - [`receive_stream`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/receive_stream) - [`root_id`](https://reference.langchain.com/python/langchain-core/tracers/log_stream/LogStreamCallbackHandler/root_id) - [`name`](https://reference.langchain.com/python/langchain-core/tracers/run_collector/RunCollectorCallbackHandler/name) - [`example_id`](https://reference.langchain.com/python/langchain-core/tracers/run_collector/RunCollectorCallbackHandler/example_id) - [`traced_runs`](https://reference.langchain.com/python/langchain-core/tracers/run_collector/RunCollectorCallbackHandler/traced_runs) - [`tracing_callback_var`](https://reference.langchain.com/python/langchain-core/tracers/context/tracing_callback_var) - [`tracing_v2_callback_var`](https://reference.langchain.com/python/langchain-core/tracers/context/tracing_v2_callback_var) - [`run_collector_var`](https://reference.langchain.com/python/langchain-core/tracers/context/run_collector_var) - [`logger`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/logger) - [`name`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/RunInfo/name) - [`tags`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/RunInfo/tags) - [`metadata`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/RunInfo/metadata) - [`run_type`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/RunInfo/run_type) - [`inputs`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/RunInfo/inputs) - [`parent_run_id`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/RunInfo/parent_run_id) - [`tool_call_id`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/RunInfo/tool_call_id) - [`T`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/T) - [`run_map`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/_AstreamEventsCallbackHandler/run_map) - [`parent_map`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/_AstreamEventsCallbackHandler/parent_map) - [`is_tapped`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/_AstreamEventsCallbackHandler/is_tapped) - [`root_event_filter`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/_AstreamEventsCallbackHandler/root_event_filter) - [`send_stream`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/_AstreamEventsCallbackHandler/send_stream) - [`receive_stream`](https://reference.langchain.com/python/langchain-core/tracers/event_stream/_AstreamEventsCallbackHandler/receive_stream) - [`logger`](https://reference.langchain.com/python/langchain-core/tracers/langchain/logger) - [`OVERRIDABLE_LANGSMITH_INHERITABLE_METADATA_KEYS`](https://reference.langchain.com/python/langchain-core/tracers/langchain/OVERRIDABLE_LANGSMITH_INHERITABLE_METADATA_KEYS) - [`run_inline`](https://reference.langchain.com/python/langchain-core/tracers/langchain/LangChainTracer/run_inline) - [`example_id`](https://reference.langchain.com/python/langchain-core/tracers/langchain/LangChainTracer/example_id) - [`project_name`](https://reference.langchain.com/python/langchain-core/tracers/langchain/LangChainTracer/project_name) - [`client`](https://reference.langchain.com/python/langchain-core/tracers/langchain/LangChainTracer/client) - [`tags`](https://reference.langchain.com/python/langchain-core/tracers/langchain/LangChainTracer/tags) - [`latest_run`](https://reference.langchain.com/python/langchain-core/tracers/langchain/LangChainTracer/latest_run) - [`run_has_token_event_map`](https://reference.langchain.com/python/langchain-core/tracers/langchain/LangChainTracer/run_has_token_event_map) - [`tracing_metadata`](https://reference.langchain.com/python/langchain-core/tracers/langchain/LangChainTracer/tracing_metadata) - [`logger`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/logger) - [`name`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler/name) - [`example_id`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler/example_id) - [`client`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler/client) - [`evaluators`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler/evaluators) - [`executor`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler/executor) - [`futures`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler/futures) - [`skip_unfinished`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler/skip_unfinished) - [`project_name`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler/project_name) - [`logged_eval_results`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler/logged_eval_results) - [`lock`](https://reference.langchain.com/python/langchain-core/tracers/evaluation/EvaluatorCallbackHandler/lock) - [`MILLISECONDS_IN_SECOND`](https://reference.langchain.com/python/langchain-core/tracers/stdout/MILLISECONDS_IN_SECOND) - [`name`](https://reference.langchain.com/python/langchain-core/tracers/stdout/FunctionCallbackHandler/name) - [`function_callback`](https://reference.langchain.com/python/langchain-core/tracers/stdout/FunctionCallbackHandler/function_callback) - [`name`](https://reference.langchain.com/python/langchain-core/tracers/stdout/ConsoleCallbackHandler/name) - [`HERE`](https://reference.langchain.com/python/langchain-core/_api/path/HERE) - [`PACKAGE_DIR`](https://reference.langchain.com/python/langchain-core/_api/path/PACKAGE_DIR) - [`SEPARATOR`](https://reference.langchain.com/python/langchain-core/_api/path/SEPARATOR) - [`T`](https://reference.langchain.com/python/langchain-core/_api/deprecation/T) - [`T`](https://reference.langchain.com/python/langchain-core/_api/beta_decorator/T) - [`usage_metadata`](https://reference.langchain.com/python/langchain-core/callbacks/usage/UsageMetadataCallbackHandler/usage_metadata) - [`raise_error`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackHandler/raise_error) - [`run_inline`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackHandler/run_inline) - [`ignore_llm`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackHandler/ignore_llm) - [`ignore_retry`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackHandler/ignore_retry) - [`ignore_chain`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackHandler/ignore_chain) - [`ignore_agent`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackHandler/ignore_agent) - [`ignore_retriever`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackHandler/ignore_retriever) - [`ignore_chat_model`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackHandler/ignore_chat_model) - [`ignore_custom_event`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackHandler/ignore_custom_event) - [`handlers`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackManager/handlers) - [`inheritable_handlers`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackManager/inheritable_handlers) - [`parent_run_id`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackManager/parent_run_id) - [`tags`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackManager/tags) - [`inheritable_tags`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackManager/inheritable_tags) - [`metadata`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackManager/metadata) - [`inheritable_metadata`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackManager/inheritable_metadata) - [`is_async`](https://reference.langchain.com/python/langchain-core/callbacks/base/BaseCallbackManager/is_async) - [`logger`](https://reference.langchain.com/python/langchain-core/callbacks/manager/logger) - [`Func`](https://reference.langchain.com/python/langchain-core/callbacks/manager/Func) - [`run_id`](https://reference.langchain.com/python/langchain-core/callbacks/manager/BaseRunManager/run_id) - [`handlers`](https://reference.langchain.com/python/langchain-core/callbacks/manager/BaseRunManager/handlers) - [`inheritable_handlers`](https://reference.langchain.com/python/langchain-core/callbacks/manager/BaseRunManager/inheritable_handlers) - [`parent_run_id`](https://reference.langchain.com/python/langchain-core/callbacks/manager/BaseRunManager/parent_run_id) - [`tags`](https://reference.langchain.com/python/langchain-core/callbacks/manager/BaseRunManager/tags) - [`inheritable_tags`](https://reference.langchain.com/python/langchain-core/callbacks/manager/BaseRunManager/inheritable_tags) - [`metadata`](https://reference.langchain.com/python/langchain-core/callbacks/manager/BaseRunManager/metadata) - [`inheritable_metadata`](https://reference.langchain.com/python/langchain-core/callbacks/manager/BaseRunManager/inheritable_metadata) - [`parent_run_manager`](https://reference.langchain.com/python/langchain-core/callbacks/manager/CallbackManagerForChainGroup/parent_run_manager) - [`ended`](https://reference.langchain.com/python/langchain-core/callbacks/manager/CallbackManagerForChainGroup/ended) - [`is_async`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncCallbackManager/is_async) - [`parent_run_manager`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncCallbackManagerForChainGroup/parent_run_manager) - [`ended`](https://reference.langchain.com/python/langchain-core/callbacks/manager/AsyncCallbackManagerForChainGroup/ended) - [`T`](https://reference.langchain.com/python/langchain-core/callbacks/manager/T) - [`filename`](https://reference.langchain.com/python/langchain-core/callbacks/file/FileCallbackHandler/filename) - [`mode`](https://reference.langchain.com/python/langchain-core/callbacks/file/FileCallbackHandler/mode) - [`color`](https://reference.langchain.com/python/langchain-core/callbacks/file/FileCallbackHandler/color) - [`file`](https://reference.langchain.com/python/langchain-core/callbacks/file/FileCallbackHandler/file) - [`color`](https://reference.langchain.com/python/langchain-core/callbacks/stdout/StdOutCallbackHandler/color) - [`text`](https://reference.langchain.com/python/langchain-core/outputs/generation/Generation/text) - [`generation_info`](https://reference.langchain.com/python/langchain-core/outputs/generation/Generation/generation_info) - [`type`](https://reference.langchain.com/python/langchain-core/outputs/generation/Generation/type) - [`run_id`](https://reference.langchain.com/python/langchain-core/outputs/run_info/RunInfo/run_id) - [`generations`](https://reference.langchain.com/python/langchain-core/outputs/chat_result/ChatResult/generations) - [`llm_output`](https://reference.langchain.com/python/langchain-core/outputs/chat_result/ChatResult/llm_output) - [`text`](https://reference.langchain.com/python/langchain-core/outputs/chat_generation/ChatGeneration/text) - [`message`](https://reference.langchain.com/python/langchain-core/outputs/chat_generation/ChatGeneration/message) - [`type`](https://reference.langchain.com/python/langchain-core/outputs/chat_generation/ChatGeneration/type) - [`message`](https://reference.langchain.com/python/langchain-core/outputs/chat_generation/ChatGenerationChunk/message) - [`type`](https://reference.langchain.com/python/langchain-core/outputs/chat_generation/ChatGenerationChunk/type) - [`generations`](https://reference.langchain.com/python/langchain-core/outputs/llm_result/LLMResult/generations) - [`llm_output`](https://reference.langchain.com/python/langchain-core/outputs/llm_result/LLMResult/llm_output) - [`run`](https://reference.langchain.com/python/langchain-core/outputs/llm_result/LLMResult/run) - [`type`](https://reference.langchain.com/python/langchain-core/outputs/llm_result/LLMResult/type) - [`examples`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/_FewShotPromptTemplateMixin/examples) - [`example_selector`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/_FewShotPromptTemplateMixin/example_selector) - [`model_config`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/_FewShotPromptTemplateMixin/model_config) - [`validate_template`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotPromptTemplate/validate_template) - [`example_prompt`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotPromptTemplate/example_prompt) - [`suffix`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotPromptTemplate/suffix) - [`example_separator`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotPromptTemplate/example_separator) - [`prefix`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotPromptTemplate/prefix) - [`template_format`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotPromptTemplate/template_format) - [`model_config`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotPromptTemplate/model_config) - [`input_variables`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotChatMessagePromptTemplate/input_variables) - [`example_prompt`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotChatMessagePromptTemplate/example_prompt) - [`model_config`](https://reference.langchain.com/python/langchain-core/prompts/few_shot/FewShotChatMessagePromptTemplate/model_config) - [`input_variables`](https://reference.langchain.com/python/langchain-core/prompts/message/BaseMessagePromptTemplate/input_variables) - [`URL_BASE`](https://reference.langchain.com/python/langchain-core/prompts/loading/URL_BASE) - [`logger`](https://reference.langchain.com/python/langchain-core/prompts/loading/logger) - [`type_to_loader_dict`](https://reference.langchain.com/python/langchain-core/prompts/loading/type_to_loader_dict) - [`lc_attributes`](https://reference.langchain.com/python/langchain-core/prompts/prompt/PromptTemplate/lc_attributes) - [`template`](https://reference.langchain.com/python/langchain-core/prompts/prompt/PromptTemplate/template) - [`template_format`](https://reference.langchain.com/python/langchain-core/prompts/prompt/PromptTemplate/template_format) - [`validate_template`](https://reference.langchain.com/python/langchain-core/prompts/prompt/PromptTemplate/validate_template) - [`FormatOutputType`](https://reference.langchain.com/python/langchain-core/prompts/base/FormatOutputType) - [`input_variables`](https://reference.langchain.com/python/langchain-core/prompts/base/BasePromptTemplate/input_variables) - [`optional_variables`](https://reference.langchain.com/python/langchain-core/prompts/base/BasePromptTemplate/optional_variables) - [`input_types`](https://reference.langchain.com/python/langchain-core/prompts/base/BasePromptTemplate/input_types) - [`output_parser`](https://reference.langchain.com/python/langchain-core/prompts/base/BasePromptTemplate/output_parser) - [`partial_variables`](https://reference.langchain.com/python/langchain-core/prompts/base/BasePromptTemplate/partial_variables) - [`metadata`](https://reference.langchain.com/python/langchain-core/prompts/base/BasePromptTemplate/metadata) - [`tags`](https://reference.langchain.com/python/langchain-core/prompts/base/BasePromptTemplate/tags) - [`model_config`](https://reference.langchain.com/python/langchain-core/prompts/base/BasePromptTemplate/model_config) - [`OutputType`](https://reference.langchain.com/python/langchain-core/prompts/base/BasePromptTemplate/OutputType) - [`examples`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates/FewShotPromptWithTemplates/examples) - [`example_selector`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates/FewShotPromptWithTemplates/example_selector) - [`example_prompt`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates/FewShotPromptWithTemplates/example_prompt) - [`suffix`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates/FewShotPromptWithTemplates/suffix) - [`example_separator`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates/FewShotPromptWithTemplates/example_separator) - [`prefix`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates/FewShotPromptWithTemplates/prefix) - [`template_format`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates/FewShotPromptWithTemplates/template_format) - [`validate_template`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates/FewShotPromptWithTemplates/validate_template) - [`model_config`](https://reference.langchain.com/python/langchain-core/prompts/few_shot_with_templates/FewShotPromptWithTemplates/model_config) - [`schema_`](https://reference.langchain.com/python/langchain-core/prompts/structured/StructuredPrompt/schema_) - [`structured_output_kwargs`](https://reference.langchain.com/python/langchain-core/prompts/structured/StructuredPrompt/structured_output_kwargs) - [`template`](https://reference.langchain.com/python/langchain-core/prompts/dict/DictPromptTemplate/template) - [`template_format`](https://reference.langchain.com/python/langchain-core/prompts/dict/DictPromptTemplate/template_format) - [`input_variables`](https://reference.langchain.com/python/langchain-core/prompts/dict/DictPromptTemplate/input_variables) - [`PromptTemplateFormat`](https://reference.langchain.com/python/langchain-core/prompts/string/PromptTemplateFormat) - [`Defs`](https://reference.langchain.com/python/langchain-core/prompts/string/Defs) - [`DEFAULT_FORMATTER_MAPPING`](https://reference.langchain.com/python/langchain-core/prompts/string/DEFAULT_FORMATTER_MAPPING) - [`DEFAULT_VALIDATOR_MAPPING`](https://reference.langchain.com/python/langchain-core/prompts/string/DEFAULT_VALIDATOR_MAPPING) - [`template`](https://reference.langchain.com/python/langchain-core/prompts/image/ImagePromptTemplate/template) - [`template_format`](https://reference.langchain.com/python/langchain-core/prompts/image/ImagePromptTemplate/template_format) - [`variable_name`](https://reference.langchain.com/python/langchain-core/prompts/chat/MessagesPlaceholder/variable_name) - [`optional`](https://reference.langchain.com/python/langchain-core/prompts/chat/MessagesPlaceholder/optional) - [`n_messages`](https://reference.langchain.com/python/langchain-core/prompts/chat/MessagesPlaceholder/n_messages) - [`input_variables`](https://reference.langchain.com/python/langchain-core/prompts/chat/MessagesPlaceholder/input_variables) - [`MessagePromptTemplateT`](https://reference.langchain.com/python/langchain-core/prompts/chat/MessagePromptTemplateT) - [`prompt`](https://reference.langchain.com/python/langchain-core/prompts/chat/BaseStringMessagePromptTemplate/prompt) - [`additional_kwargs`](https://reference.langchain.com/python/langchain-core/prompts/chat/BaseStringMessagePromptTemplate/additional_kwargs) - [`input_variables`](https://reference.langchain.com/python/langchain-core/prompts/chat/BaseStringMessagePromptTemplate/input_variables) - [`role`](https://reference.langchain.com/python/langchain-core/prompts/chat/ChatMessagePromptTemplate/role) - [`text`](https://reference.langchain.com/python/langchain-core/prompts/chat/_TextTemplateParam/text) - [`image_url`](https://reference.langchain.com/python/langchain-core/prompts/chat/_ImageTemplateParam/image_url) - [`prompt`](https://reference.langchain.com/python/langchain-core/prompts/chat/_StringImageMessagePromptTemplate/prompt) - [`additional_kwargs`](https://reference.langchain.com/python/langchain-core/prompts/chat/_StringImageMessagePromptTemplate/additional_kwargs) - [`input_variables`](https://reference.langchain.com/python/langchain-core/prompts/chat/_StringImageMessagePromptTemplate/input_variables) - [`lc_attributes`](https://reference.langchain.com/python/langchain-core/prompts/chat/BaseChatPromptTemplate/lc_attributes) - [`messages`](https://reference.langchain.com/python/langchain-core/prompts/chat/ChatPromptTemplate/messages) - [`validate_template`](https://reference.langchain.com/python/langchain-core/prompts/chat/ChatPromptTemplate/validate_template) - [`input`](https://reference.langchain.com/python/langchain-core/runnables/schema/EventData/input) - [`error`](https://reference.langchain.com/python/langchain-core/runnables/schema/EventData/error) - [`output`](https://reference.langchain.com/python/langchain-core/runnables/schema/EventData/output) - [`chunk`](https://reference.langchain.com/python/langchain-core/runnables/schema/EventData/chunk) - [`tool_call_id`](https://reference.langchain.com/python/langchain-core/runnables/schema/EventData/tool_call_id) - [`event`](https://reference.langchain.com/python/langchain-core/runnables/schema/BaseStreamEvent/event) - [`run_id`](https://reference.langchain.com/python/langchain-core/runnables/schema/BaseStreamEvent/run_id) - [`tags`](https://reference.langchain.com/python/langchain-core/runnables/schema/BaseStreamEvent/tags) - [`metadata`](https://reference.langchain.com/python/langchain-core/runnables/schema/BaseStreamEvent/metadata) - [`parent_ids`](https://reference.langchain.com/python/langchain-core/runnables/schema/BaseStreamEvent/parent_ids) - [`data`](https://reference.langchain.com/python/langchain-core/runnables/schema/StandardStreamEvent/data) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/schema/StandardStreamEvent/name) - [`event`](https://reference.langchain.com/python/langchain-core/runnables/schema/CustomStreamEvent/event) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/schema/CustomStreamEvent/name) - [`data`](https://reference.langchain.com/python/langchain-core/runnables/schema/CustomStreamEvent/data) - [`fontname`](https://reference.langchain.com/python/langchain-core/runnables/graph_png/PngDrawer/fontname) - [`labels`](https://reference.langchain.com/python/langchain-core/runnables/graph_png/PngDrawer/labels) - [`branches`](https://reference.langchain.com/python/langchain-core/runnables/branch/RunnableBranch/branches) - [`default`](https://reference.langchain.com/python/langchain-core/runnables/branch/RunnableBranch/default) - [`model_config`](https://reference.langchain.com/python/langchain-core/runnables/branch/RunnableBranch/model_config) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/branch/RunnableBranch/config_specs) - [`nodes`](https://reference.langchain.com/python/langchain-core/runnables/graph/LabelsDict/nodes) - [`edges`](https://reference.langchain.com/python/langchain-core/runnables/graph/LabelsDict/edges) - [`source`](https://reference.langchain.com/python/langchain-core/runnables/graph/Edge/source) - [`target`](https://reference.langchain.com/python/langchain-core/runnables/graph/Edge/target) - [`data`](https://reference.langchain.com/python/langchain-core/runnables/graph/Edge/data) - [`conditional`](https://reference.langchain.com/python/langchain-core/runnables/graph/Edge/conditional) - [`id`](https://reference.langchain.com/python/langchain-core/runnables/graph/Node/id) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/graph/Node/name) - [`data`](https://reference.langchain.com/python/langchain-core/runnables/graph/Node/data) - [`metadata`](https://reference.langchain.com/python/langchain-core/runnables/graph/Node/metadata) - [`condition`](https://reference.langchain.com/python/langchain-core/runnables/graph/Branch/condition) - [`ends`](https://reference.langchain.com/python/langchain-core/runnables/graph/Branch/ends) - [`BASIS`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/BASIS) - [`BUMP_X`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/BUMP_X) - [`BUMP_Y`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/BUMP_Y) - [`CARDINAL`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/CARDINAL) - [`CATMULL_ROM`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/CATMULL_ROM) - [`LINEAR`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/LINEAR) - [`MONOTONE_X`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/MONOTONE_X) - [`MONOTONE_Y`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/MONOTONE_Y) - [`NATURAL`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/NATURAL) - [`STEP`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/STEP) - [`STEP_AFTER`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/STEP_AFTER) - [`STEP_BEFORE`](https://reference.langchain.com/python/langchain-core/runnables/graph/CurveStyle/STEP_BEFORE) - [`default`](https://reference.langchain.com/python/langchain-core/runnables/graph/NodeStyles/default) - [`first`](https://reference.langchain.com/python/langchain-core/runnables/graph/NodeStyles/first) - [`last`](https://reference.langchain.com/python/langchain-core/runnables/graph/NodeStyles/last) - [`PYPPETEER`](https://reference.langchain.com/python/langchain-core/runnables/graph/MermaidDrawMethod/PYPPETEER) - [`API`](https://reference.langchain.com/python/langchain-core/runnables/graph/MermaidDrawMethod/API) - [`nodes`](https://reference.langchain.com/python/langchain-core/runnables/graph/Graph/nodes) - [`edges`](https://reference.langchain.com/python/langchain-core/runnables/graph/Graph/edges) - [`input_type`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnablePassthrough/input_type) - [`func`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnablePassthrough/func) - [`afunc`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnablePassthrough/afunc) - [`InputType`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnablePassthrough/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnablePassthrough/OutputType) - [`mapper`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnableAssign/mapper) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnableAssign/config_specs) - [`keys`](https://reference.langchain.com/python/langchain-core/runnables/passthrough/RunnablePick/keys) - [`default`](https://reference.langchain.com/python/langchain-core/runnables/configurable/DynamicRunnable/default) - [`config`](https://reference.langchain.com/python/langchain-core/runnables/configurable/DynamicRunnable/config) - [`model_config`](https://reference.langchain.com/python/langchain-core/runnables/configurable/DynamicRunnable/model_config) - [`InputType`](https://reference.langchain.com/python/langchain-core/runnables/configurable/DynamicRunnable/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/runnables/configurable/DynamicRunnable/OutputType) - [`fields`](https://reference.langchain.com/python/langchain-core/runnables/configurable/RunnableConfigurableFields/fields) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/configurable/RunnableConfigurableFields/config_specs) - [`which`](https://reference.langchain.com/python/langchain-core/runnables/configurable/RunnableConfigurableAlternatives/which) - [`alternatives`](https://reference.langchain.com/python/langchain-core/runnables/configurable/RunnableConfigurableAlternatives/alternatives) - [`default_key`](https://reference.langchain.com/python/langchain-core/runnables/configurable/RunnableConfigurableAlternatives/default_key) - [`prefix_keys`](https://reference.langchain.com/python/langchain-core/runnables/configurable/RunnableConfigurableAlternatives/prefix_keys) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/configurable/RunnableConfigurableAlternatives/config_specs) - [`key`](https://reference.langchain.com/python/langchain-core/runnables/router/RouterInput/key) - [`input`](https://reference.langchain.com/python/langchain-core/runnables/router/RouterInput/input) - [`runnables`](https://reference.langchain.com/python/langchain-core/runnables/router/RouterRunnable/runnables) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/router/RouterRunnable/config_specs) - [`model_config`](https://reference.langchain.com/python/langchain-core/runnables/router/RouterRunnable/model_config) - [`Input`](https://reference.langchain.com/python/langchain-core/runnables/utils/Input) - [`Output`](https://reference.langchain.com/python/langchain-core/runnables/utils/Output) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/utils/IsLocalDict/name) - [`keys`](https://reference.langchain.com/python/langchain-core/runnables/utils/IsLocalDict/keys) - [`keys`](https://reference.langchain.com/python/langchain-core/runnables/utils/IsFunctionArgDict/keys) - [`loads`](https://reference.langchain.com/python/langchain-core/runnables/utils/NonLocals/loads) - [`stores`](https://reference.langchain.com/python/langchain-core/runnables/utils/NonLocals/stores) - [`nonlocals`](https://reference.langchain.com/python/langchain-core/runnables/utils/FunctionNonLocals/nonlocals) - [`source`](https://reference.langchain.com/python/langchain-core/runnables/utils/GetLambdaSource/source) - [`count`](https://reference.langchain.com/python/langchain-core/runnables/utils/GetLambdaSource/count) - [`Addable`](https://reference.langchain.com/python/langchain-core/runnables/utils/Addable) - [`id`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableField/id) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableField/name) - [`description`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableField/description) - [`annotation`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableField/annotation) - [`is_shared`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableField/is_shared) - [`id`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSingleOption/id) - [`options`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSingleOption/options) - [`default`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSingleOption/default) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSingleOption/name) - [`description`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSingleOption/description) - [`is_shared`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSingleOption/is_shared) - [`id`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldMultiOption/id) - [`options`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldMultiOption/options) - [`default`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldMultiOption/default) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldMultiOption/name) - [`description`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldMultiOption/description) - [`is_shared`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldMultiOption/is_shared) - [`id`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSpec/id) - [`annotation`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSpec/annotation) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSpec/name) - [`description`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSpec/description) - [`default`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSpec/default) - [`is_shared`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSpec/is_shared) - [`dependencies`](https://reference.langchain.com/python/langchain-core/runnables/utils/ConfigurableFieldSpec/dependencies) - [`include_names`](https://reference.langchain.com/python/langchain-core/runnables/utils/_RootEventFilter/include_names) - [`include_types`](https://reference.langchain.com/python/langchain-core/runnables/utils/_RootEventFilter/include_types) - [`include_tags`](https://reference.langchain.com/python/langchain-core/runnables/utils/_RootEventFilter/include_tags) - [`exclude_names`](https://reference.langchain.com/python/langchain-core/runnables/utils/_RootEventFilter/exclude_names) - [`exclude_types`](https://reference.langchain.com/python/langchain-core/runnables/utils/_RootEventFilter/exclude_types) - [`exclude_tags`](https://reference.langchain.com/python/langchain-core/runnables/utils/_RootEventFilter/exclude_tags) - [`MARKDOWN_SPECIAL_CHARS`](https://reference.langchain.com/python/langchain-core/runnables/graph_mermaid/MARKDOWN_SPECIAL_CHARS) - [`Other`](https://reference.langchain.com/python/langchain-core/runnables/base/Other) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/base/Runnable/name) - [`InputType`](https://reference.langchain.com/python/langchain-core/runnables/base/Runnable/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/runnables/base/Runnable/OutputType) - [`input_schema`](https://reference.langchain.com/python/langchain-core/runnables/base/Runnable/input_schema) - [`output_schema`](https://reference.langchain.com/python/langchain-core/runnables/base/Runnable/output_schema) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/base/Runnable/config_specs) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSerializable/name) - [`model_config`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSerializable/model_config) - [`first`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSequence/first) - [`middle`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSequence/middle) - [`last`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSequence/last) - [`steps`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSequence/steps) - [`model_config`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSequence/model_config) - [`InputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSequence/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSequence/OutputType) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableSequence/config_specs) - [`steps__`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableParallel/steps__) - [`model_config`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableParallel/model_config) - [`InputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableParallel/InputType) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableParallel/config_specs) - [`RunnableMap`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableMap) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableGenerator/name) - [`InputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableGenerator/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableGenerator/OutputType) - [`afunc`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableLambda/afunc) - [`func`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableLambda/func) - [`name`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableLambda/name) - [`InputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableLambda/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableLambda/OutputType) - [`deps`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableLambda/deps) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableLambda/config_specs) - [`bound`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableEachBase/bound) - [`model_config`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableEachBase/model_config) - [`InputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableEachBase/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableEachBase/OutputType) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableEachBase/config_specs) - [`bound`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase/bound) - [`kwargs`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase/kwargs) - [`config`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase/config) - [`config_factories`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase/config_factories) - [`custom_input_type`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase/custom_input_type) - [`custom_output_type`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase/custom_output_type) - [`model_config`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase/model_config) - [`InputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase/OutputType) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/base/RunnableBindingBase/config_specs) - [`T`](https://reference.langchain.com/python/langchain-core/runnables/retry/T) - [`U`](https://reference.langchain.com/python/langchain-core/runnables/retry/U) - [`initial`](https://reference.langchain.com/python/langchain-core/runnables/retry/ExponentialJitterParams/initial) - [`max`](https://reference.langchain.com/python/langchain-core/runnables/retry/ExponentialJitterParams/max) - [`exp_base`](https://reference.langchain.com/python/langchain-core/runnables/retry/ExponentialJitterParams/exp_base) - [`jitter`](https://reference.langchain.com/python/langchain-core/runnables/retry/ExponentialJitterParams/jitter) - [`retry_exception_types`](https://reference.langchain.com/python/langchain-core/runnables/retry/RunnableRetry/retry_exception_types) - [`wait_exponential_jitter`](https://reference.langchain.com/python/langchain-core/runnables/retry/RunnableRetry/wait_exponential_jitter) - [`exponential_jitter_params`](https://reference.langchain.com/python/langchain-core/runnables/retry/RunnableRetry/exponential_jitter_params) - [`max_attempt_number`](https://reference.langchain.com/python/langchain-core/runnables/retry/RunnableRetry/max_attempt_number) - [`runnable`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks/RunnableWithFallbacks/runnable) - [`fallbacks`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks/RunnableWithFallbacks/fallbacks) - [`exceptions_to_handle`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks/RunnableWithFallbacks/exceptions_to_handle) - [`exception_key`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks/RunnableWithFallbacks/exception_key) - [`model_config`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks/RunnableWithFallbacks/model_config) - [`InputType`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks/RunnableWithFallbacks/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks/RunnableWithFallbacks/OutputType) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks/RunnableWithFallbacks/config_specs) - [`runnables`](https://reference.langchain.com/python/langchain-core/runnables/fallbacks/RunnableWithFallbacks/runnables) - [`tags`](https://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig/tags) - [`metadata`](https://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig/metadata) - [`callbacks`](https://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig/callbacks) - [`run_name`](https://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig/run_name) - [`max_concurrency`](https://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig/max_concurrency) - [`recursion_limit`](https://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig/recursion_limit) - [`configurable`](https://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig/configurable) - [`run_id`](https://reference.langchain.com/python/langchain-core/runnables/config/RunnableConfig/run_id) - [`CONFIG_KEYS`](https://reference.langchain.com/python/langchain-core/runnables/config/CONFIG_KEYS) - [`COPIABLE_KEYS`](https://reference.langchain.com/python/langchain-core/runnables/config/COPIABLE_KEYS) - [`CONFIGURABLE_TO_TRACING_METADATA_EXCLUDED_KEYS`](https://reference.langchain.com/python/langchain-core/runnables/config/CONFIGURABLE_TO_TRACING_METADATA_EXCLUDED_KEYS) - [`DEFAULT_RECURSION_LIMIT`](https://reference.langchain.com/python/langchain-core/runnables/config/DEFAULT_RECURSION_LIMIT) - [`var_child_runnable_config`](https://reference.langchain.com/python/langchain-core/runnables/config/var_child_runnable_config) - [`P`](https://reference.langchain.com/python/langchain-core/runnables/config/P) - [`T`](https://reference.langchain.com/python/langchain-core/runnables/config/T) - [`GetSessionHistoryCallable`](https://reference.langchain.com/python/langchain-core/runnables/history/GetSessionHistoryCallable) - [`get_session_history`](https://reference.langchain.com/python/langchain-core/runnables/history/RunnableWithMessageHistory/get_session_history) - [`input_messages_key`](https://reference.langchain.com/python/langchain-core/runnables/history/RunnableWithMessageHistory/input_messages_key) - [`output_messages_key`](https://reference.langchain.com/python/langchain-core/runnables/history/RunnableWithMessageHistory/output_messages_key) - [`history_messages_key`](https://reference.langchain.com/python/langchain-core/runnables/history/RunnableWithMessageHistory/history_messages_key) - [`history_factory_config`](https://reference.langchain.com/python/langchain-core/runnables/history/RunnableWithMessageHistory/history_factory_config) - [`config_specs`](https://reference.langchain.com/python/langchain-core/runnables/history/RunnableWithMessageHistory/config_specs) - [`OutputType`](https://reference.langchain.com/python/langchain-core/runnables/history/RunnableWithMessageHistory/OutputType) - [`HEIGHT`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/VertexViewer/HEIGHT) - [`h`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/VertexViewer/h) - [`w`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/VertexViewer/w) - [`TIMEOUT`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/AsciiCanvas/TIMEOUT) - [`cols`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/AsciiCanvas/cols) - [`lines`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/AsciiCanvas/lines) - [`canvas`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/AsciiCanvas/canvas) - [`pts`](https://reference.langchain.com/python/langchain-core/runnables/graph_ascii/_EdgeViewer/pts) - [`content_key`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/content_key) - [`format_content`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/format_content) - [`dataset_id`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/dataset_id) - [`dataset_name`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/dataset_name) - [`example_ids`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/example_ids) - [`as_of`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/as_of) - [`splits`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/splits) - [`inline_s3_urls`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/inline_s3_urls) - [`offset`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/offset) - [`limit`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/limit) - [`metadata`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/metadata) - [`filter`](https://reference.langchain.com/python/langchain-core/document_loaders/langsmith/LangSmithLoader/filter) - [`size`](https://reference.langchain.com/python/langchain-core/embeddings/fake/FakeEmbeddings/size) - [`size`](https://reference.langchain.com/python/langchain-core/embeddings/fake/DeterministicFakeEmbedding/size) - [`SSRFProtectedUrl`](https://reference.langchain.com/python/langchain-core/_security/_ssrf_protection/SSRFProtectedUrl) - [`SSRFProtectedUrlRelaxed`](https://reference.langchain.com/python/langchain-core/_security/_ssrf_protection/SSRFProtectedUrlRelaxed) - [`SSRFProtectedHttpsUrl`](https://reference.langchain.com/python/langchain-core/_security/_ssrf_protection/SSRFProtectedHttpsUrl) - [`SSRFProtectedHttpsUrlStr`](https://reference.langchain.com/python/langchain-core/_security/_ssrf_protection/SSRFProtectedHttpsUrlStr) - [`allowed_schemes`](https://reference.langchain.com/python/langchain-core/_security/_policy/SSRFPolicy/allowed_schemes) - [`block_private_ips`](https://reference.langchain.com/python/langchain-core/_security/_policy/SSRFPolicy/block_private_ips) - [`block_localhost`](https://reference.langchain.com/python/langchain-core/_security/_policy/SSRFPolicy/block_localhost) - [`block_cloud_metadata`](https://reference.langchain.com/python/langchain-core/_security/_policy/SSRFPolicy/block_cloud_metadata) - [`block_k8s_internal`](https://reference.langchain.com/python/langchain-core/_security/_policy/SSRFPolicy/block_k8s_internal) - [`allowed_hosts`](https://reference.langchain.com/python/langchain-core/_security/_policy/SSRFPolicy/allowed_hosts) - [`additional_blocked_cidrs`](https://reference.langchain.com/python/langchain-core/_security/_policy/SSRFPolicy/additional_blocked_cidrs) - [`reason`](https://reference.langchain.com/python/langchain-core/_security/_exceptions/SSRFBlockedError/reason) - [`logger`](https://reference.langchain.com/python/langchain-core/vectorstores/utils/logger) - [`logger`](https://reference.langchain.com/python/langchain-core/vectorstores/base/logger) - [`VST`](https://reference.langchain.com/python/langchain-core/vectorstores/base/VST) - [`embeddings`](https://reference.langchain.com/python/langchain-core/vectorstores/base/VectorStore/embeddings) - [`vectorstore`](https://reference.langchain.com/python/langchain-core/vectorstores/base/VectorStoreRetriever/vectorstore) - [`search_type`](https://reference.langchain.com/python/langchain-core/vectorstores/base/VectorStoreRetriever/search_type) - [`search_kwargs`](https://reference.langchain.com/python/langchain-core/vectorstores/base/VectorStoreRetriever/search_kwargs) - [`allowed_search_types`](https://reference.langchain.com/python/langchain-core/vectorstores/base/VectorStoreRetriever/allowed_search_types) - [`model_config`](https://reference.langchain.com/python/langchain-core/vectorstores/base/VectorStoreRetriever/model_config) - [`store`](https://reference.langchain.com/python/langchain-core/vectorstores/in_memory/InMemoryVectorStore/store) - [`embedding`](https://reference.langchain.com/python/langchain-core/vectorstores/in_memory/InMemoryVectorStore/embedding) - [`embeddings`](https://reference.langchain.com/python/langchain-core/vectorstores/in_memory/InMemoryVectorStore/embeddings) - [`responses`](https://reference.langchain.com/python/langchain-core/language_models/fake/FakeListLLM/responses) - [`sleep`](https://reference.langchain.com/python/langchain-core/language_models/fake/FakeListLLM/sleep) - [`i`](https://reference.langchain.com/python/langchain-core/language_models/fake/FakeListLLM/i) - [`error_on_chunk_number`](https://reference.langchain.com/python/langchain-core/language_models/fake/FakeStreamingListLLM/error_on_chunk_number) - [`responses`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeMessagesListChatModel/responses) - [`sleep`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeMessagesListChatModel/sleep) - [`i`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeMessagesListChatModel/i) - [`responses`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeListChatModel/responses) - [`sleep`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeListChatModel/sleep) - [`i`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeListChatModel/i) - [`error_on_chunk_number`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/FakeListChatModel/error_on_chunk_number) - [`messages`](https://reference.langchain.com/python/langchain-core/language_models/fake_chat_models/GenericFakeChatModel/messages) - [`ls_provider`](https://reference.langchain.com/python/langchain-core/language_models/base/LangSmithParams/ls_provider) - [`ls_model_name`](https://reference.langchain.com/python/langchain-core/language_models/base/LangSmithParams/ls_model_name) - [`ls_model_type`](https://reference.langchain.com/python/langchain-core/language_models/base/LangSmithParams/ls_model_type) - [`ls_temperature`](https://reference.langchain.com/python/langchain-core/language_models/base/LangSmithParams/ls_temperature) - [`ls_max_tokens`](https://reference.langchain.com/python/langchain-core/language_models/base/LangSmithParams/ls_max_tokens) - [`ls_stop`](https://reference.langchain.com/python/langchain-core/language_models/base/LangSmithParams/ls_stop) - [`ls_integration`](https://reference.langchain.com/python/langchain-core/language_models/base/LangSmithParams/ls_integration) - [`LanguageModelLike`](https://reference.langchain.com/python/langchain-core/language_models/base/LanguageModelLike) - [`LanguageModelOutputVar`](https://reference.langchain.com/python/langchain-core/language_models/base/LanguageModelOutputVar) - [`cache`](https://reference.langchain.com/python/langchain-core/language_models/base/BaseLanguageModel/cache) - [`verbose`](https://reference.langchain.com/python/langchain-core/language_models/base/BaseLanguageModel/verbose) - [`callbacks`](https://reference.langchain.com/python/langchain-core/language_models/base/BaseLanguageModel/callbacks) - [`tags`](https://reference.langchain.com/python/langchain-core/language_models/base/BaseLanguageModel/tags) - [`metadata`](https://reference.langchain.com/python/langchain-core/language_models/base/BaseLanguageModel/metadata) - [`custom_get_token_ids`](https://reference.langchain.com/python/langchain-core/language_models/base/BaseLanguageModel/custom_get_token_ids) - [`model_config`](https://reference.langchain.com/python/langchain-core/language_models/base/BaseLanguageModel/model_config) - [`InputType`](https://reference.langchain.com/python/langchain-core/language_models/base/BaseLanguageModel/InputType) - [`done`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/_ProjectionBase/done) - [`error`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/_ProjectionBase/error) - [`namespace`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/_ChatModelStreamBase/namespace) - [`node`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/_ChatModelStreamBase/node) - [`message_id`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/_ChatModelStreamBase/message_id) - [`done`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/_ChatModelStreamBase/done) - [`has_events`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/_ChatModelStreamBase/has_events) - [`output_message`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/_ChatModelStreamBase/output_message) - [`text`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/ChatModelStream/text) - [`reasoning`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/ChatModelStream/reasoning) - [`tool_calls`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/ChatModelStream/tool_calls) - [`output`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/ChatModelStream/output) - [`text`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/AsyncChatModelStream/text) - [`reasoning`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/AsyncChatModelStream/reasoning) - [`tool_calls`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/AsyncChatModelStream/tool_calls) - [`output`](https://reference.langchain.com/python/langchain-core/language_models/chat_model_stream/AsyncChatModelStream/output) - [`rate_limiter`](https://reference.langchain.com/python/langchain-core/language_models/chat_models/BaseChatModel/rate_limiter) - [`disable_streaming`](https://reference.langchain.com/python/langchain-core/language_models/chat_models/BaseChatModel/disable_streaming) - [`output_version`](https://reference.langchain.com/python/langchain-core/language_models/chat_models/BaseChatModel/output_version) - [`profile`](https://reference.langchain.com/python/langchain-core/language_models/chat_models/BaseChatModel/profile) - [`model_config`](https://reference.langchain.com/python/langchain-core/language_models/chat_models/BaseChatModel/model_config) - [`OutputType`](https://reference.langchain.com/python/langchain-core/language_models/chat_models/BaseChatModel/OutputType) - [`source_type`](https://reference.langchain.com/python/langchain-core/language_models/_utils/ParsedDataUri/source_type) - [`data`](https://reference.langchain.com/python/langchain-core/language_models/_utils/ParsedDataUri/data) - [`mime_type`](https://reference.langchain.com/python/langchain-core/language_models/_utils/ParsedDataUri/mime_type) - [`T`](https://reference.langchain.com/python/langchain-core/language_models/_utils/T) - [`logger`](https://reference.langchain.com/python/langchain-core/language_models/llms/logger) - [`model_config`](https://reference.langchain.com/python/langchain-core/language_models/llms/BaseLLM/model_config) - [`OutputType`](https://reference.langchain.com/python/langchain-core/language_models/llms/BaseLLM/OutputType) - [`logger`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/logger) - [`name`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/name) - [`status`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/status) - [`release_date`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/release_date) - [`last_updated`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/last_updated) - [`open_weights`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/open_weights) - [`max_input_tokens`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/max_input_tokens) - [`text_inputs`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/text_inputs) - [`image_inputs`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/image_inputs) - [`image_url_inputs`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/image_url_inputs) - [`pdf_inputs`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/pdf_inputs) - [`audio_inputs`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/audio_inputs) - [`video_inputs`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/video_inputs) - [`image_tool_message`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/image_tool_message) - [`pdf_tool_message`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/pdf_tool_message) - [`max_output_tokens`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/max_output_tokens) - [`reasoning_output`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/reasoning_output) - [`text_outputs`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/text_outputs) - [`image_outputs`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/image_outputs) - [`audio_outputs`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/audio_outputs) - [`video_outputs`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/video_outputs) - [`tool_calling`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/tool_calling) - [`tool_choice`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/tool_choice) - [`structured_output`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/structured_output) - [`attachment`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/attachment) - [`temperature`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfile/temperature) - [`ModelProfileRegistry`](https://reference.langchain.com/python/langchain-core/language_models/model_profile/ModelProfileRegistry) - [`CompatBlock`](https://reference.langchain.com/python/langchain-core/language_models/_compat_bridge/CompatBlock) - [`vectorstore`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity/_VectorStoreExampleSelector/vectorstore) - [`k`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity/_VectorStoreExampleSelector/k) - [`example_keys`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity/_VectorStoreExampleSelector/example_keys) - [`input_keys`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity/_VectorStoreExampleSelector/input_keys) - [`vectorstore_kwargs`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity/_VectorStoreExampleSelector/vectorstore_kwargs) - [`model_config`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity/_VectorStoreExampleSelector/model_config) - [`fetch_k`](https://reference.langchain.com/python/langchain-core/example_selectors/semantic_similarity/MaxMarginalRelevanceExampleSelector/fetch_k) - [`examples`](https://reference.langchain.com/python/langchain-core/example_selectors/length_based/LengthBasedExampleSelector/examples) - [`example_prompt`](https://reference.langchain.com/python/langchain-core/example_selectors/length_based/LengthBasedExampleSelector/example_prompt) - [`get_text_length`](https://reference.langchain.com/python/langchain-core/example_selectors/length_based/LengthBasedExampleSelector/get_text_length) - [`max_length`](https://reference.langchain.com/python/langchain-core/example_selectors/length_based/LengthBasedExampleSelector/max_length) - [`example_text_lengths`](https://reference.langchain.com/python/langchain-core/example_selectors/length_based/LengthBasedExampleSelector/example_text_lengths) - [`DEFAULT_NAMESPACES`](https://reference.langchain.com/python/langchain-core/load/load/DEFAULT_NAMESPACES) - [`DISALLOW_LOAD_FROM_PATH`](https://reference.langchain.com/python/langchain-core/load/load/DISALLOW_LOAD_FROM_PATH) - [`ALL_SERIALIZABLE_MAPPINGS`](https://reference.langchain.com/python/langchain-core/load/load/ALL_SERIALIZABLE_MAPPINGS) - [`AllowedObject`](https://reference.langchain.com/python/langchain-core/load/load/AllowedObject) - [`InitValidator`](https://reference.langchain.com/python/langchain-core/load/load/InitValidator) - [`secrets_from_env`](https://reference.langchain.com/python/langchain-core/load/load/Reviver/secrets_from_env) - [`secrets_map`](https://reference.langchain.com/python/langchain-core/load/load/Reviver/secrets_map) - [`valid_namespaces`](https://reference.langchain.com/python/langchain-core/load/load/Reviver/valid_namespaces) - [`additional_import_mappings`](https://reference.langchain.com/python/langchain-core/load/load/Reviver/additional_import_mappings) - [`import_mappings`](https://reference.langchain.com/python/langchain-core/load/load/Reviver/import_mappings) - [`allowed_class_paths`](https://reference.langchain.com/python/langchain-core/load/load/Reviver/allowed_class_paths) - [`ignore_unserializable_fields`](https://reference.langchain.com/python/langchain-core/load/load/Reviver/ignore_unserializable_fields) - [`init_validator`](https://reference.langchain.com/python/langchain-core/load/load/Reviver/init_validator) - [`logger`](https://reference.langchain.com/python/langchain-core/load/serializable/logger) - [`lc`](https://reference.langchain.com/python/langchain-core/load/serializable/BaseSerialized/lc) - [`id`](https://reference.langchain.com/python/langchain-core/load/serializable/BaseSerialized/id) - [`name`](https://reference.langchain.com/python/langchain-core/load/serializable/BaseSerialized/name) - [`graph`](https://reference.langchain.com/python/langchain-core/load/serializable/BaseSerialized/graph) - [`type`](https://reference.langchain.com/python/langchain-core/load/serializable/SerializedConstructor/type) - [`kwargs`](https://reference.langchain.com/python/langchain-core/load/serializable/SerializedConstructor/kwargs) - [`type`](https://reference.langchain.com/python/langchain-core/load/serializable/SerializedSecret/type) - [`type`](https://reference.langchain.com/python/langchain-core/load/serializable/SerializedNotImplemented/type) - [`repr`](https://reference.langchain.com/python/langchain-core/load/serializable/SerializedNotImplemented/repr) - [`lc_secrets`](https://reference.langchain.com/python/langchain-core/load/serializable/Serializable/lc_secrets) - [`lc_attributes`](https://reference.langchain.com/python/langchain-core/load/serializable/Serializable/lc_attributes) - [`model_config`](https://reference.langchain.com/python/langchain-core/load/serializable/Serializable/model_config) - [`SERIALIZABLE_MAPPING`](https://reference.langchain.com/python/langchain-core/load/mapping/SERIALIZABLE_MAPPING) - [`OLD_CORE_NAMESPACES_MAPPING`](https://reference.langchain.com/python/langchain-core/load/mapping/OLD_CORE_NAMESPACES_MAPPING) - [`namespace`](https://reference.langchain.com/python/langchain-core/indexing/base/RecordManager/namespace) - [`group_id`](https://reference.langchain.com/python/langchain-core/indexing/base/_Record/group_id) - [`updated_at`](https://reference.langchain.com/python/langchain-core/indexing/base/_Record/updated_at) - [`records`](https://reference.langchain.com/python/langchain-core/indexing/base/InMemoryRecordManager/records) - [`namespace`](https://reference.langchain.com/python/langchain-core/indexing/base/InMemoryRecordManager/namespace) - [`succeeded`](https://reference.langchain.com/python/langchain-core/indexing/base/UpsertResponse/succeeded) - [`failed`](https://reference.langchain.com/python/langchain-core/indexing/base/UpsertResponse/failed) - [`num_deleted`](https://reference.langchain.com/python/langchain-core/indexing/base/DeleteResponse/num_deleted) - [`succeeded`](https://reference.langchain.com/python/langchain-core/indexing/base/DeleteResponse/succeeded) - [`failed`](https://reference.langchain.com/python/langchain-core/indexing/base/DeleteResponse/failed) - [`num_failed`](https://reference.langchain.com/python/langchain-core/indexing/base/DeleteResponse/num_failed) - [`store`](https://reference.langchain.com/python/langchain-core/indexing/in_memory/InMemoryDocumentIndex/store) - [`top_k`](https://reference.langchain.com/python/langchain-core/indexing/in_memory/InMemoryDocumentIndex/top_k) - [`NAMESPACE_UUID`](https://reference.langchain.com/python/langchain-core/indexing/api/NAMESPACE_UUID) - [`T`](https://reference.langchain.com/python/langchain-core/indexing/api/T) - [`num_added`](https://reference.langchain.com/python/langchain-core/indexing/api/IndexingResult/num_added) - [`num_updated`](https://reference.langchain.com/python/langchain-core/indexing/api/IndexingResult/num_updated) - [`num_deleted`](https://reference.langchain.com/python/langchain-core/indexing/api/IndexingResult/num_deleted) - [`num_skipped`](https://reference.langchain.com/python/langchain-core/indexing/api/IndexingResult/num_skipped) - [`tool_call_id`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolMessage/tool_call_id) - [`type`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolMessage/type) - [`artifact`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolMessage/artifact) - [`status`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolMessage/status) - [`additional_kwargs`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolMessage/additional_kwargs) - [`response_metadata`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolMessage/response_metadata) - [`type`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolMessageChunk/type) - [`name`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCall/name) - [`args`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCall/args) - [`id`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCall/id) - [`type`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCall/type) - [`name`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCallChunk/name) - [`args`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCallChunk/args) - [`id`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCallChunk/id) - [`index`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCallChunk/index) - [`type`](https://reference.langchain.com/python/langchain-core/messages/tool/ToolCallChunk/type) - [`name`](https://reference.langchain.com/python/langchain-core/messages/function/FunctionMessage/name) - [`type`](https://reference.langchain.com/python/langchain-core/messages/function/FunctionMessage/type) - [`type`](https://reference.langchain.com/python/langchain-core/messages/function/FunctionMessageChunk/type) - [`logger`](https://reference.langchain.com/python/langchain-core/messages/utils/logger) - [`AnyMessage`](https://reference.langchain.com/python/langchain-core/messages/utils/AnyMessage) - [`logger`](https://reference.langchain.com/python/langchain-core/messages/ai/logger) - [`audio`](https://reference.langchain.com/python/langchain-core/messages/ai/InputTokenDetails/audio) - [`cache_creation`](https://reference.langchain.com/python/langchain-core/messages/ai/InputTokenDetails/cache_creation) - [`cache_read`](https://reference.langchain.com/python/langchain-core/messages/ai/InputTokenDetails/cache_read) - [`audio`](https://reference.langchain.com/python/langchain-core/messages/ai/OutputTokenDetails/audio) - [`reasoning`](https://reference.langchain.com/python/langchain-core/messages/ai/OutputTokenDetails/reasoning) - [`input_tokens`](https://reference.langchain.com/python/langchain-core/messages/ai/UsageMetadata/input_tokens) - [`output_tokens`](https://reference.langchain.com/python/langchain-core/messages/ai/UsageMetadata/output_tokens) - [`total_tokens`](https://reference.langchain.com/python/langchain-core/messages/ai/UsageMetadata/total_tokens) - [`input_token_details`](https://reference.langchain.com/python/langchain-core/messages/ai/UsageMetadata/input_token_details) - [`output_token_details`](https://reference.langchain.com/python/langchain-core/messages/ai/UsageMetadata/output_token_details) - [`tool_calls`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessage/tool_calls) - [`invalid_tool_calls`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessage/invalid_tool_calls) - [`usage_metadata`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessage/usage_metadata) - [`type`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessage/type) - [`lc_attributes`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessage/lc_attributes) - [`content_blocks`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessage/content_blocks) - [`type`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessageChunk/type) - [`tool_call_chunks`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessageChunk/tool_call_chunks) - [`chunk_position`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessageChunk/chunk_position) - [`lc_attributes`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessageChunk/lc_attributes) - [`content_blocks`](https://reference.langchain.com/python/langchain-core/messages/ai/AIMessageChunk/content_blocks) - [`type`](https://reference.langchain.com/python/langchain-core/messages/modifier/RemoveMessage/type) - [`content`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessage/content) - [`additional_kwargs`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessage/additional_kwargs) - [`response_metadata`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessage/response_metadata) - [`type`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessage/type) - [`name`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessage/name) - [`id`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessage/id) - [`model_config`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessage/model_config) - [`content_blocks`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessage/content_blocks) - [`text`](https://reference.langchain.com/python/langchain-core/messages/base/BaseMessage/text) - [`type`](https://reference.langchain.com/python/langchain-core/messages/system/SystemMessage/type) - [`type`](https://reference.langchain.com/python/langchain-core/messages/system/SystemMessageChunk/type) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/Citation/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/Citation/id) - [`url`](https://reference.langchain.com/python/langchain-core/messages/content/Citation/url) - [`title`](https://reference.langchain.com/python/langchain-core/messages/content/Citation/title) - [`start_index`](https://reference.langchain.com/python/langchain-core/messages/content/Citation/start_index) - [`end_index`](https://reference.langchain.com/python/langchain-core/messages/content/Citation/end_index) - [`cited_text`](https://reference.langchain.com/python/langchain-core/messages/content/Citation/cited_text) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/Citation/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/NonStandardAnnotation/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/NonStandardAnnotation/id) - [`value`](https://reference.langchain.com/python/langchain-core/messages/content/NonStandardAnnotation/value) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/TextContentBlock/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/TextContentBlock/id) - [`text`](https://reference.langchain.com/python/langchain-core/messages/content/TextContentBlock/text) - [`annotations`](https://reference.langchain.com/python/langchain-core/messages/content/TextContentBlock/annotations) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/TextContentBlock/index) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/TextContentBlock/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCall/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCall/id) - [`name`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCall/name) - [`args`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCall/args) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCall/index) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCall/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCallChunk/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCallChunk/id) - [`name`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCallChunk/name) - [`args`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCallChunk/args) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCallChunk/index) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/ToolCallChunk/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/InvalidToolCall/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/InvalidToolCall/id) - [`name`](https://reference.langchain.com/python/langchain-core/messages/content/InvalidToolCall/name) - [`args`](https://reference.langchain.com/python/langchain-core/messages/content/InvalidToolCall/args) - [`error`](https://reference.langchain.com/python/langchain-core/messages/content/InvalidToolCall/error) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/InvalidToolCall/index) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/InvalidToolCall/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCall/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCall/id) - [`name`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCall/name) - [`args`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCall/args) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCall/index) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCall/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCallChunk/type) - [`name`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCallChunk/name) - [`args`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCallChunk/args) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCallChunk/id) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCallChunk/index) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolCallChunk/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolResult/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolResult/id) - [`tool_call_id`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolResult/tool_call_id) - [`status`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolResult/status) - [`output`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolResult/output) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolResult/index) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/ServerToolResult/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/ReasoningContentBlock/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/ReasoningContentBlock/id) - [`reasoning`](https://reference.langchain.com/python/langchain-core/messages/content/ReasoningContentBlock/reasoning) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/ReasoningContentBlock/index) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/ReasoningContentBlock/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/ImageContentBlock/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/ImageContentBlock/id) - [`file_id`](https://reference.langchain.com/python/langchain-core/messages/content/ImageContentBlock/file_id) - [`mime_type`](https://reference.langchain.com/python/langchain-core/messages/content/ImageContentBlock/mime_type) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/ImageContentBlock/index) - [`url`](https://reference.langchain.com/python/langchain-core/messages/content/ImageContentBlock/url) - [`base64`](https://reference.langchain.com/python/langchain-core/messages/content/ImageContentBlock/base64) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/ImageContentBlock/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/VideoContentBlock/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/VideoContentBlock/id) - [`file_id`](https://reference.langchain.com/python/langchain-core/messages/content/VideoContentBlock/file_id) - [`mime_type`](https://reference.langchain.com/python/langchain-core/messages/content/VideoContentBlock/mime_type) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/VideoContentBlock/index) - [`url`](https://reference.langchain.com/python/langchain-core/messages/content/VideoContentBlock/url) - [`base64`](https://reference.langchain.com/python/langchain-core/messages/content/VideoContentBlock/base64) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/VideoContentBlock/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/AudioContentBlock/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/AudioContentBlock/id) - [`file_id`](https://reference.langchain.com/python/langchain-core/messages/content/AudioContentBlock/file_id) - [`mime_type`](https://reference.langchain.com/python/langchain-core/messages/content/AudioContentBlock/mime_type) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/AudioContentBlock/index) - [`url`](https://reference.langchain.com/python/langchain-core/messages/content/AudioContentBlock/url) - [`base64`](https://reference.langchain.com/python/langchain-core/messages/content/AudioContentBlock/base64) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/AudioContentBlock/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/id) - [`file_id`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/file_id) - [`mime_type`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/mime_type) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/index) - [`url`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/url) - [`base64`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/base64) - [`text`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/text) - [`title`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/title) - [`context`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/context) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/PlainTextContentBlock/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/FileContentBlock/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/FileContentBlock/id) - [`file_id`](https://reference.langchain.com/python/langchain-core/messages/content/FileContentBlock/file_id) - [`mime_type`](https://reference.langchain.com/python/langchain-core/messages/content/FileContentBlock/mime_type) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/FileContentBlock/index) - [`url`](https://reference.langchain.com/python/langchain-core/messages/content/FileContentBlock/url) - [`base64`](https://reference.langchain.com/python/langchain-core/messages/content/FileContentBlock/base64) - [`extras`](https://reference.langchain.com/python/langchain-core/messages/content/FileContentBlock/extras) - [`type`](https://reference.langchain.com/python/langchain-core/messages/content/NonStandardContentBlock/type) - [`id`](https://reference.langchain.com/python/langchain-core/messages/content/NonStandardContentBlock/id) - [`value`](https://reference.langchain.com/python/langchain-core/messages/content/NonStandardContentBlock/value) - [`index`](https://reference.langchain.com/python/langchain-core/messages/content/NonStandardContentBlock/index) - [`KNOWN_BLOCK_TYPES`](https://reference.langchain.com/python/langchain-core/messages/content/KNOWN_BLOCK_TYPES) - [`role`](https://reference.langchain.com/python/langchain-core/messages/chat/ChatMessage/role) - [`type`](https://reference.langchain.com/python/langchain-core/messages/chat/ChatMessage/type) - [`type`](https://reference.langchain.com/python/langchain-core/messages/chat/ChatMessageChunk/type) - [`type`](https://reference.langchain.com/python/langchain-core/messages/human/HumanMessage/type) - [`type`](https://reference.langchain.com/python/langchain-core/messages/human/HumanMessageChunk/type) - [`PROVIDER_TRANSLATORS`](https://reference.langchain.com/python/langchain-core/messages/block_translators/PROVIDER_TRANSLATORS) - [`id`](https://reference.langchain.com/python/langchain-core/documents/base/BaseMedia/id) - [`metadata`](https://reference.langchain.com/python/langchain-core/documents/base/BaseMedia/metadata) - [`data`](https://reference.langchain.com/python/langchain-core/documents/base/Blob/data) - [`mimetype`](https://reference.langchain.com/python/langchain-core/documents/base/Blob/mimetype) - [`encoding`](https://reference.langchain.com/python/langchain-core/documents/base/Blob/encoding) - [`path`](https://reference.langchain.com/python/langchain-core/documents/base/Blob/path) - [`model_config`](https://reference.langchain.com/python/langchain-core/documents/base/Blob/model_config) - [`source`](https://reference.langchain.com/python/langchain-core/documents/base/Blob/source) - [`page_content`](https://reference.langchain.com/python/langchain-core/documents/base/Document/page_content) - [`type`](https://reference.langchain.com/python/langchain-core/documents/base/Document/type) - [`T`](https://reference.langchain.com/python/langchain-core/output_parsers/base/T) - [`OutputParserLike`](https://reference.langchain.com/python/langchain-core/output_parsers/base/OutputParserLike) - [`InputType`](https://reference.langchain.com/python/langchain-core/output_parsers/base/BaseGenerationOutputParser/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/output_parsers/base/BaseGenerationOutputParser/OutputType) - [`InputType`](https://reference.langchain.com/python/langchain-core/output_parsers/base/BaseOutputParser/InputType) - [`OutputType`](https://reference.langchain.com/python/langchain-core/output_parsers/base/BaseOutputParser/OutputType) - [`diff`](https://reference.langchain.com/python/langchain-core/output_parsers/transform/BaseCumulativeTransformOutputParser/diff) - [`pydantic_object`](https://reference.langchain.com/python/langchain-core/output_parsers/pydantic/PydanticOutputParser/pydantic_object) - [`OutputType`](https://reference.langchain.com/python/langchain-core/output_parsers/pydantic/PydanticOutputParser/OutputType) - [`TBaseModel`](https://reference.langchain.com/python/langchain-core/output_parsers/json/TBaseModel) - [`pydantic_object`](https://reference.langchain.com/python/langchain-core/output_parsers/json/JsonOutputParser/pydantic_object) - [`SimpleJsonOutputParser`](https://reference.langchain.com/python/langchain-core/output_parsers/json/SimpleJsonOutputParser) - [`T`](https://reference.langchain.com/python/langchain-core/output_parsers/list/T) - [`pattern`](https://reference.langchain.com/python/langchain-core/output_parsers/list/NumberedListOutputParser/pattern) - [`pattern`](https://reference.langchain.com/python/langchain-core/output_parsers/list/MarkdownListOutputParser/pattern) - [`args_only`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/OutputFunctionsParser/args_only) - [`strict`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/JsonOutputFunctionsParser/strict) - [`args_only`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/JsonOutputFunctionsParser/args_only) - [`key_name`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/JsonKeyOutputFunctionsParser/key_name) - [`pydantic_schema`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/PydanticOutputFunctionsParser/pydantic_schema) - [`attr_name`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_functions/PydanticAttrOutputFunctionsParser/attr_name) - [`JSON_FORMAT_INSTRUCTIONS`](https://reference.langchain.com/python/langchain-core/output_parsers/format_instructions/JSON_FORMAT_INSTRUCTIONS) - [`logger`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/logger) - [`strict`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/JsonOutputToolsParser/strict) - [`return_id`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/JsonOutputToolsParser/return_id) - [`first_tool_only`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/JsonOutputToolsParser/first_tool_only) - [`key_name`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/JsonOutputKeyToolsParser/key_name) - [`tools`](https://reference.langchain.com/python/langchain-core/output_parsers/openai_tools/PydanticToolsParser/tools) - [`XML_FORMAT_INSTRUCTIONS`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/XML_FORMAT_INSTRUCTIONS) - [`pull_parser`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/_StreamingParser/pull_parser) - [`xml_start_re`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/_StreamingParser/xml_start_re) - [`current_path`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/_StreamingParser/current_path) - [`current_path_has_children`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/_StreamingParser/current_path_has_children) - [`buffer`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/_StreamingParser/buffer) - [`xml_started`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/_StreamingParser/xml_started) - [`tags`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/XMLOutputParser/tags) - [`encoding_matcher`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/XMLOutputParser/encoding_matcher) - [`parser`](https://reference.langchain.com/python/langchain-core/output_parsers/xml/XMLOutputParser/parser) - [`query`](https://reference.langchain.com/python/langchain-core/tools/retriever/RetrieverInput/query) - [`ToolsRenderer`](https://reference.langchain.com/python/langchain-core/tools/render/ToolsRenderer) - [`FILTERED_ARGS`](https://reference.langchain.com/python/langchain-core/tools/base/FILTERED_ARGS) - [`TOOL_MESSAGE_BLOCK_TYPES`](https://reference.langchain.com/python/langchain-core/tools/base/TOOL_MESSAGE_BLOCK_TYPES) - [`extra`](https://reference.langchain.com/python/langchain-core/tools/base/_SchemaConfig/extra) - [`arbitrary_types_allowed`](https://reference.langchain.com/python/langchain-core/tools/base/_SchemaConfig/arbitrary_types_allowed) - [`name`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/name) - [`description`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/description) - [`args_schema`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/args_schema) - [`return_direct`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/return_direct) - [`verbose`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/verbose) - [`callbacks`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/callbacks) - [`tags`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/tags) - [`metadata`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/metadata) - [`handle_tool_error`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/handle_tool_error) - [`handle_validation_error`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/handle_validation_error) - [`response_format`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/response_format) - [`extras`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/extras) - [`model_config`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/model_config) - [`is_single_input`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/is_single_input) - [`args`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/args) - [`tool_call_schema`](https://reference.langchain.com/python/langchain-core/tools/base/BaseTool/tool_call_schema) - [`description`](https://reference.langchain.com/python/langchain-core/tools/structured/StructuredTool/description) - [`args_schema`](https://reference.langchain.com/python/langchain-core/tools/structured/StructuredTool/args_schema) - [`func`](https://reference.langchain.com/python/langchain-core/tools/structured/StructuredTool/func) - [`coroutine`](https://reference.langchain.com/python/langchain-core/tools/structured/StructuredTool/coroutine) - [`description`](https://reference.langchain.com/python/langchain-core/tools/simple/Tool/description) - [`func`](https://reference.langchain.com/python/langchain-core/tools/simple/Tool/func) - [`coroutine`](https://reference.langchain.com/python/langchain-core/tools/simple/Tool/coroutine) - [`args`](https://reference.langchain.com/python/langchain-core/tools/simple/Tool/args)