langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- 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
- fix(openrouter): streaming reasoning_details fragmentation causes multi-turn BadRequestResponseError
- To support BytePlus's video functionality, implement lenient validation for the `input.type` field in OpenAI responses by checking if `input.type == input_video` to ensure compatibility with BytePlus.
- ChatMistralAI: citation metadata from Mistral API response is silently dropped
- fix(openrouter): merge fragmented `reasoning_details` in streaming
- x
- [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
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