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LangGraph · Class

MemorySaver

MemorySaver is LangGraph's in-memory checkpointer. It stores checkpoint data and pending writes so thread state can be read and managed during application execution.

Last updated

Since
v1.0

Syntax

MemorySaver(serde: SerializerProtocol | None = None)

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • BaseCheckpointSaver
  • InMemorySaver
  • SerializerProtocol
  • RunnableConfig
  • Checkpoint

Source: MemorySaver | langgraph.checkpoint | LangChain Reference. Checked 2026-11-03.