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LangMem

Library that lets LangGraph agents extract, consolidate and search their own long-term memory.

Infrastructure by LangChain

IndexedMIT★ 1,722
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pip install langmem

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About

LangMem provides a memory API that works with any storage system, memory tools agents can call during a conversation, and a background manager that extracts and consolidates knowledge. It has native integration with the LangGraph long-term memory store. It is installed as a Python package and works with whichever LLM provider you configure with an API key.

Use cases: agent-memory

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Fact sheet

Category
Memory · memory sdk
Open source
Yesgithub.com
Works with
langgraphraw.githubusercontent.com

Facts read from the vendor's own pages by claude-haiku-5-5 on Oct 24, 2026; a fact is shown only with the page it came from.

Signals

Stars
1,722
Forks
202
Open issues
56
Last commit
Oct 2, 2026 (24 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Packages
pypi langmem
License
MIT
Repository
github.com/langchain-ai/langmem
Website
langchain-ai.github.io/langmem/
Docs
langchain-ai.github.io/langmem/
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
READMEWebsiteDocsgithub-graphql

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Cite this page

LangMem. Agent Mart. https://agentmart.dev/infrastructure/langmem (last updated 2026-10-24)