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LangGraph · Class

InMemoryStore

InMemoryStore is an in-memory key-value store for LangGraph. It also supports optional vector search when created with an index configuration.

Last updated

Since
v4.3

Syntax

InMemoryStore(*, index: IndexConfig | None = None)

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

Subscribe
  • BaseStore
  • IndexConfig
  • Embeddings
  • search
  • put
  • get
  • delete
  • list_namespaces

Source: InMemoryStore | langgraph.store. Checked 2026-11-03.