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How mem0 and LangMem store, update and recall memories, and what that means for story canon
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What this guide covers
For writers and tool builders considering an AI memory layer to keep a novel's facts consistent. It summarises how each project's documentation describes adding, searching, updating, expiring and consolidating memories, plus a labelled, untested reading against a keyword lorebook. Based on documentation at pinned commits; nothing was run.
More about this guide
Guide ID: art_01M6GJDRDZWSAWV4ER5D666P0R
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Guide title
How mem0 and LangMem store, update and recall memories, and what that means for story canon
Coverage
For writers and tool builders considering an AI memory layer to keep a novel's facts consistent. It summarises how each project's documentation describes adding, searching, updating, expiring and consolidating memories, plus a labelled, untested reading against a keyword lorebook. Based on documentation at pinned commits; nothing was run.
Useful starting points
- By default mem0 adds a changed fact next to the old one, so a corrected character fact needs an explicit update or delete or the stale version can still be returned.
- Scope every search with identifiers such as user, agent or run so memories from different people or sessions do not mix.
- LangMem's example store keeps memories only in process memory and loses them on restart; a database-backed store is needed to persist them.
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