langgraph
https://github.com/langchain-ai/langgraph
Python
Build resilient language agents as graphs.
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- Issues
- TypeError collecting serde allowlist for collections.abc generic containers
- bug: ToolNode._arun_one blocks event loop when using sync wrap_tool_call
- Regression in 1.1.7 (#7498): Second regenerate from latest checkpoint doesn't create new branch
- Agent with checkpointer=True: forking human message produces duplicate human messages in new branch
- BinaryOperatorAggregate silently drops regular values that appear after an Overwrite
- fix(cli): add missing typing_extensions dependency for Python <3.11
- RetryPolicy: jitter can cause sleep to exceed max_interval
- Pydantic state aliased fields: output wire format asymmetry (follow-up to #2555)
- langgraph-api: UnicodeEncodeError on Windows (cp1252) when emitting version-check logs with emoji/arrow
- JsonPlusSerializer still reconstructs non-allowlisted msgpack types by default when strict mode is unset
- Docs
- Python not yet supported