langchain
https://github.com/langchain-ai/langchain
Python
⚡ Building applications with LLMs through composability ⚡
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- Issues
- Ollama not able to do structured outputs for gpt-oss (upstream issue)
- Agent re-attempts original tool call after HumanInTheLoopMiddleware edit decision
- OpenRouter / LiteLLM / OpenAI API compatibility across providers / proxies
- feat(core)!: raise exception if `type` value is different in dicts to merge
- Harmony: bad request on gpt-oss-120b and tool calls with `create_react_agent`
- `Graph.draw_png()` silently returns `None` with invalid node types, causing unexpected crash on usage
- core: leak when using object member in a `RunnableSequence`
- core: inconsistent behavior for `BaseTool` subclasses that return `list` from `_run`/`_arun`
- core: incorrect token count (`usage_metadata`) in streaming mode
- Setting a custom `http_client` fails with unexpected keyword argument when using `ChatAnthropic`
- Docs
- Python not yet supported