langgraph
https://github.com/langchain-ai/langgraph
Python
Build resilient language agents as graphs.
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- Issues
- fix(checkpoint): avoid silent None when msgpack type import fails
- fix(prebuilt): add timeout parameter to ToolNode for async tool execution
- `JsonPlusSerializer` can silently replace restored checkpoint values with `None` after deserialization failure
- Random CancelledError in AsyncPregelLoop cleanup
- `get_state().next` is empty after a node calls `interrupt()` twice
- fix(langgraph): skip RESUME writes in `_prepare_state_snapshot` so `get_state().next` is correct after double interrupt
- fix(prebuilt): handle plain ToolException in default tool error handler
- fix: include task in next if it has pending interrupt even with writes
- Fail closed on checkpoint schema validation before load
- fix(checkpoint-postgres): backfill semantic search results with non-indexed docs
- Docs
- Python not yet supported