langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- Add BuiltinToolsMiddleWare to support native llm builtin tools like web_search, code_execution, file_content, etc.
- In agent, there is no suitable reasoning_content for deepseek
- STTI-001: Proposal for “No Side Effect Without Provenance” invariant
- Streaming Output for Multi-Agent Systems
- chore(langchain): improve typing of agent decorators
- FilesystemMiddleware pass wrong type of data in wrap_model_call
- feat(langchain): `LargeToolResultMiddleware` to prevent hyper-aggressive summarization from losing context
- fix(langchain): allow duplicate middleware names by keeping last instance
- OpenAI payload fails with KeyError: 'role' when reasoning-enabled/Responses API path is used
- fix(langchain): guard file search regex fallback
- Docs
- Python not yet supported