Base async callback handler.
AsyncCallbackHandler()Run when the model starts running.
This method is called for non-chat models (regular text completion LLMs). If
you're implementing a handler for a chat model, you should use
on_chat_model_start instead.
Run when a chat model starts running.
This method is called for chat models. If you're implementing a handler for
a non-chat model, you should use on_llm_start instead.
Run on new output token. Only available when streaming is enabled.
For both chat models and non-chat models (legacy text completion LLMs).
Run when the model ends running.
Run when LLM errors.
Run when a chain starts running.
Run when a chain ends running.
Run when chain errors.
Run when the tool starts running.
Run when the tool ends running.
Run when tool errors.
Run on an arbitrary text.
Run on a retry event.
Run on agent action.
Run on the agent end.
Run on the retriever start.
Run on the retriever end.
Run on retriever error.
Override to define a handler for custom events.
Whether to raise an error if an exception occurs.
Whether to ignore LLM callbacks.
Whether to ignore retry callbacks.
Whether to ignore chain callbacks.
Whether to ignore agent callbacks.
Whether to ignore retriever callbacks.
Whether to ignore chat model callbacks.
Ignore custom event.