langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- Support endpoint_url in HuggingFaceEndpointEmbeddings
- fix(core): memoize `convert_to_openai_tool` per tool instance
- chore(model-profiles): refresh model profile data
- QdrantVectorStore.as_retriever(search_type="mmr") inverts lambda_mult semantics
- feat(standard-tests): replace mypy by ty for type checking
- core: index() with key_encoder="sha256"/"sha512"/"blake2b" produces non-UUID document IDs, breaking Qdrant
- langchain-openai: Responses API streaming silently drops response.failed/error events. A failed stream is indistinguishable from a successful completion.
- feat(langchain): add subagent middleware
- fix(core,langchain): preserve _TracerCore copy, prevent default_tools mutation, return LogStream send value
- core: `get_usage_metadata_callback` keeps tracking after the `with` block raises
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- Python not yet supported