LangChain Reference home page

GitHub
Main Docs

MCP Adapters

Standard Tests

Text Splitters

Overview
Agents
Callbacks
Chains
Chat models
Embeddings
Evaluation
Globals
Hub
Memory
Output parsers
Retrievers
Runnables
LangSmith
Storage

⌘I

LangChain Assistant

Ask a question to get started

Enter to send•Shift+Enter new line

Menu

Overview Agents Callbacks Chains Chat models Embeddings Evaluation Globals Hub Memory Output parsers Retrievers Runnables LangSmith Storage

Language

Theme

Pythonlangchain-classicchainsapiopenapichainDEPRECATED_LOOKUP

Attribute●Since v1.0

DEPRECATED_LOOKUP

Copy

DEPRECATED_LOOKUP = {'OpenAPIEndpointChain': 'langchain_community.chains.openapi.chain'}

View source on GitHub