langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- fix(text-splitters): prevent start_index=-1 in token-based splitters
- context t should probably default to `Any`, not `None`
- fix(core): handle `NameError` in `RunnableWithFallbacks.__getattr__`
- ChatAnthropic fails to handle empty HumanMessage content, leading to BadRequestError (400) from Anthropic API
- `langchain-openai` name issues
- fix(core): make `self` positional-only in `_run`/`_arun` to allow "self" as tool input key
- test(deps): Include Python 3.14 in integration test matrix
- Missing elicitation events & IDs in MCP astream make async UI-based elicitation impossible
- `@chain` decorator argument type is not fully compatible with `RunnableLambda`
- `convert_to_openai_messages` does not handle the `ChatOpenAI` `response/v1` format
- Docs
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