langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- ChatXAI: 400 error when AIMessage has tool_calls but no content
- Expose vLLM `stop_reason` in ChatOpenAI.response_metadata
- LANGSMITH_TRACING environment variable prevents per-model tracing control
- fix(core)!: flatten generations for `LangChainTracer`
- Support rate limiter on embedding models
- Pip install of langchain fails in python3.13t (nogil/free threading) due to orjson
- Issue: Deprecation warning guides users to langchain.agents, breaking stream_mode="messages" token streaming
- Docs: JSON schema 'title' requirement not clearly documented
- Malformed JSON string causes `ollama._types.ResponseError: error parsing tool call`
- tool_search_tool_result parsing fails with streaming: empty tool call args despite valid partial_json
- Docs
- Python not yet supported