An MCP memory server for coding agents. Stored facts get checked against the filesystem and git before the model relies on them, so a memory that has rotted is flagged instead of quoted back at you.
Install
Claude Code — two slash commands, zero config:
/plugin marketplace add 0Mattias/bettermemory
/plugin install bettermemory@bettermemory
Anything else that speaks MCP:
uv tool install bettermemory
bettermemory init --client claude-desktop # or cursor / cline / claude-code
Restart the client. bettermemory doctor exits 0 when it's wired
correctly and prints a one-line fix for anything that isn't.
Try it without installing: uvx bettermemory try writes a memory
citing a file, deletes the file, and shows the next search flagging it.
Offline, throwaway store.
What it does
- Every hit carries a staleness verdict — calendar age, the paths it cites, commits landed since it was last confirmed.
- Retrieval is a deliberate tool call, with one score-gated exception:
on the rare prompts where the silent-miss probe says memory was
needed (the measured rate lives in docs/eval-results.md),
the recall hook injects the top hit's id + snippet — a
pointer, never a body, so verification still runs through
memory_show([behavior] prompt_recall; off = purely opt-in). The 18 default tools still charge schema every turn: a serializedtools/listof 33,960 bytes, 27,092 of it names and descriptions, measured 2026-07-31 at 3.32.0 (bench/toolcost). CI caps the descriptions. - Write gates: transient state, secret-shaped tokens and near-duplicates bounce; claims about you stage for confirmation.
- One markdown file per memory. Greppable, git-syncable. Markdown is canonical; the SQLite index next to it is a derived cache you can delete. No cloud, no account.
bettermemory evalmeasures whether memory helped, against your own log. Ours is published — one store, one user, misses included.
For agents
You were likely handed this link with "set this up." On Claude Code, the two plugin commands above are the whole install — skip to step 3. Everywhere else, steps are idempotent and safe to re-run:
uv tool install bettermemory— orpipx install bettermemory, orpip install bettermemoryinto a venv. Python 3.11–3.14.bettermemory init --client claude-code— likewiseclaude-desktop,cursor,cline. For any other MCP host, plainbettermemory initprints the canonicalmcpServersJSON snippet plus known config locations. (Continue needs a hand-written YAML entry — see docs/clients.md.)bettermemory doctor— exit 0 means correctly wired; every failed check prints a one-line fix.- Have the user restart the client so the server loads, then confirm by asking the model "what memory tools do you have?"
Your operating contract — tool signatures, retrieval discipline,
write gates — is docs/api.md; the server's
instructions block delivers the core policy automatically. For the
long-form policy in your system prompt: bettermemory init --with-addendum. Migrating from Claude Code's built-in auto-memory:
bettermemory ingest imports those files once.
Everything else
The rest is written down: mechanics, storage format, the full tool surface, CLI, configuration and limitations in internals; per-client setup in clients and installation; eval methodology in eval; postmortems in incidents; release history in CHANGELOG; dev setup and the compatibility contract in CONTRIBUTING.
MIT licensed — see LICENSE.
1 maintainer
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