langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- Bug: `merge_dicts` raises TypeError for float values during streaming chunk aggregation
- fix(core): shared mutable dict references in BaseLLM metadata_list construction
- Support Anthropic Claude automatic caching in ChatOpenRouter
- XAI: Make Responses endpoint default
- fix(core): ToolRuntime (@tool decorator) raises Pydantic ValidationError due to _DirectlyInjectedToolArg not filtered from inferred schema
- Add ability to steer an agent in the create_agent flow
- feat(anthropic): support custom httpx client for mTLS and certificate-based authentication
- _handle_rename in Claude file tool middleware raises KeyError on every rename command
- First-class non-message workflow context / prefetched tool results for `create_agent`
- core: create_schema_from_function ignores include_injected=False when filter_args is provided
- Docs
- Python not yet supported