langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- :Feature: Support Anthropic mid-conversation system messages (MidConversationSystemBlockParam / role:system in messages) in ChatAnthropic
- ChatGroq._combine_llm_outputs mutates per-generation token_usage in place and mishandles None values (silent clobber / TypeError)
- ChatAnthropic streaming drops thinking field from empty thinking blocks (signature_delta-only), replay fails with 400 thinking.thinking: Field required
- HuggingFaceEndpointEmbeddings missing bill_to / additional_headers parameter
- [Bug]: ChatOpenRouter leaks httpx.AsyncClient instances causing Ephemeral Port Exhaustion
- Docstring inconsistency in BaseChatMessageHistory.add_message Raises section
- [Feature]: Add Static Analyzer to detect Cross-Modal Leaks in Custom Tools (Defense-in-Depth)
- Uzbek low-resource RAG evaluation
- with_structured_output is not supported when reasoning effort is used
- Filesystem file search rejects valid path segments containing double dots
- Docs
- Python not yet supported