langgraph
https://github.com/langchain-ai/langgraph
Python
Build resilient language agents as graphs.
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- Issues
- AGENTS.md: library list omits checkpoint-conformance and describes sdk-js as a live JS SDK
- `stream()` deadlocks under `max_concurrency=1` with `stream_mode="messages"` or `"custom"`, or with `subgraphs=True`
- sdk-py: make test ignores the TEST variable
- fix(sdk-py): safely retry transient gateway failures
- JsonPlusSerializer retains mutable bytearray references, changing saved checkpoints after put
- Strict-mode msgpack deserialization admits Send/Command/Overwrite control types before the allowlist check
- sdk-py: WebSocket thread streams reconnect after a terminal error frame followed by 1011
- In-memory runtime: crons fail after a restart because `SimpleUser` does not survive pickling
- `Command(graph=Command.PARENT)` from a `checkpointer=True` subgraph leaks as `ParentCommand` when the enclosing node is retried
- Stale `module_name` arg in `create_model` docstring (libs/langgraph/_internal/_pydantic.py)
- Docs
- Python not yet supported