mneme Record

Vault-native memory for Claude Code. Markdown is ground truth.

Every session starts from zero. You re-explain the same architecture, the same constraints, the same decision you already settled yesterday, and the tools that promise to fix it mostly store your conversation history in opaque SQLite blobs and call an LLM every time you finish a session. The record of your own work ends up somewhere you cannot read, cannot grep, and cannot take with you.

mneme records what happened in each Claude Code session as plain markdown files in a directory you own (the vault) and indexes them with SQLite FTS5. The next session opens with a preflight block — today's headings, a git status summary, and the five most recently modified session documents — and the agent queries the index on demand through mneme_search.

Here is the file the Stop hook writes. The frontmatter, heading, and summary shape come from packages/mneme-cc-plugin/src/mneme_cc_plugin/hooks/stop.py and packages/mneme-core/src/mneme_core/distill/templates/summary-en.md; the contents below are illustrative.

---
id: session-2026-07-24
type: session
created: 2026-07-24T09:12:41.087213+00:00
schema_version: 1
---
# Sessions 2026-07-24

## 09:12 session a3f19c2e
transcript: `~/.claude/projects/mneme/a3f19c2e.jsonl`

**Session intent**: make the retrieval guard fail on the negative probe too

**Files touched**

- `benchmarks/retrieval/regression_guard.py`
- `benchmarks/retrieval/baseline.json`

**Tool activity** (34 events, 08:41:02 → 09:12:38)

- Edit: 11
- Bash: 9
- Read: 8

*Deterministic extractive summary (zero-LLM). Edit freely — this file is yours.*

pipx install mneme-cc-plugin && mneme install

That installs the plugin and registers the lifecycle hooks; mneme doctor verifies the result, and profiles and per-client installs are under Three-Tier Install. Claude Code registers six hook events; Codex and Antigravity map four. Any other MCP client (Kimi, Qwen, Cline, Cursor) gets the nine MCP tools through the open adapter, with no lifecycle hooks and no automatic capture.

• What it stores is a file you can open. When a session has actually changed something in the vault, the Stop hook appends a timestamped ## HH:MM session block to vault/sessions/YYYY-MM-DD.md with type: session frontmatter, written atomically under a cross-process lock; mneme index rebuild reconstructs the FTS5 index over every markdown file in the vault, so the database is derived state you can delete.
• Closing a session costs nothing and takes 2 ms. "No LLM call on the critical path" is enforced in CI rath

... View full README on GitHub