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): filter_messages leaves OpenAI function_call blocks after excluding tool calls
- [langchain_huggingface] Pydantic schema is not supported for function calling
- bug(langchain): agent terminates on return_direct tool even when tool call fails
- [langchain] Agent model nodes in factory.py don't propagate config to model_.ainvoke, breaking callback handlers
- [langchain] trace=False on agent model node in factory.py prevents callback setup
- RunnableWithMessageHistory deserializes constructor-shaped output into live SystemMessage and persists it to history
- `RunnableRetry` does not fire `on_retry` callback
- Suggestion: Improve extensibility of _create_chat_result for custom metrics
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