path

Import path to an async context manager that yields a BaseCheckpointSaver instance.

The referenced object should be an @asynccontextmanager-decorated function so that the server can properly manage the checkpointer's lifecycle (e.g. opening and closing connections).

Examples:

• "./my_checkpointer.py:create_checkpointer"
• "my_package.checkpointer:create_checkpointer"

When provided, this replaces the default checkpointer.

You can use the langgraph-checkpoint-conformance package (https://pypi.org/project/langgraph-checkpoint-conformance/) to run simple conformance tests against your custom checkpointer and catch incompatibilities early.