langgraph
https://github.com/langchain-ai/langgraph
Python
Build resilient language agents as graphs.
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- Issues
- interrupt_after="node_one" pauses on a node named "no"
- Functional API deadlocks when a task waits on a child task and max_concurrency (or the thread pool) is exhausted
- PostgresStore: literal nested-dict filters raise `ValueError: Unsupported operator: <key>` (same root cause as #8786, which is scoped to SqliteStore only)
- durability="sync" raises AttributeError "_put_checkpoint_fut" on a graph compiled without a checkpointer
- update_state fails with missing checkpoint_ns when addressed by checkpoint_id
- Compatible api_version ranges reject untagged base images with registry ports
- checkpoint: store/base/embed.py uses deprecated asyncio.iscoroutinefunction (DeprecationWarning on Python 3.14, removed in 3.16)
- `retry_policy` on a node that calls two subgraphs makes the second one resume into the first one's checkpoint
- fix(langgraph): forward parent resume to RemoteGraph subgraph nodes
- Synchronous SSE errors leave responses open and exhaust the HTTP connection pool
- Docs
- Python not yet supported