langgraph
https://github.com/langchain-ai/langgraph
Python
Build resilient language agents as graphs.
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- Issues
- `langgraph.store.base.InvalidNamespaceError: Invalid namespace label '1' found in ('rag-agent', 1, 'rag-agent'). Namespace labels must be strings, but got int.`
- RuntimeError: Cannot patch execution_info before it has been set on LangGraph Cloud executor 0.7.96
- Long tool calls (~180s+) silently re-executed from checkpoint on LangGraph Cloud
- fix(checkpoint): InMemoryStore.put() overwrites created_at on update
- fix(prebuilt): Default handle_tool_errors doesn't catch tool execution errors in parallel calls
- `langgraph-prebuilt` v1.0.9 breaks with older versions of `langgraph`. Cannot import name 'ServerInfo' from 'langgraph.runtime'
- fix(prebuilt): handle injected NotRequired keys
- feat: declarative A2A agent card support
- feat(cli): support studio deploy
- MOUNT_PREFIX ignored in generated URLs for agent cards when Host header is set (reverse proxy scenario)
- Docs
- Python not yet supported