langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- bug(text-splitters): ExperimentalMarkdownSyntaxTextSplitter has O(n²) performance due to list.pop(0)
- bug(core): convert_to_openai_function mishandles optional TypedDict fields
- bug(core): BaseTool.arun handles pydantic v1 validation differently from run
- bug(core): filter_messages leaves OpenAI function_call blocks after excluding tool calls
- [langchain_huggingface] Pydantic schema is not supported for function calling
- Allow defining `state_schema` through the `@wrap_tool_call` decorator
- bug(langchain): agent terminates on return_direct tool even when tool call fails
- Problems with thinking/reasoning and structured output for tools using Anthropic
- ChatMistralAI: citation metadata from Mistral API response is silently dropped
- [langchain] Agent model nodes in factory.py don't propagate config to model_.ainvoke, breaking callback handlers
- Docs
- Python not yet supported