Exact key lookup. Returns the stored value plus timestamps, ttl, tags, metadata. Returns null if missing or expired.

List keys with optional prefix or tag filter. Returns keys + timestamps + tags only — call memory_get for values. Use this first on a new session to discover what is stored.

Full-text search across keys, values AND tags. Uses an FTS5 index with bm25 relevance ranking (key-weighted), word-stemming, diacritic folding and prefix matching — so multi-word, partial and accent-insensitive queries all hit, ranked by relevance. Falls back to a LIKE substring scan if the SQLite build lacks FTS5. Returns top N matches with a snippet. Case-insensitive.

High-level stats about the local memory store. Safe to call first on every session to gauge whether the store is empty, small, or large.

Create or update a key in memory. Rejects credential-shaped keys or values. Requires explicit_user_intent: true. Returns whether the row was created or updated.

Delete a single key from memory. Idempotent: returns existed=false if the key was not present. Requires explicit_user_intent: true.

Delete every entry carrying the given tag. Returns deleted_count. Requires explicit_user_intent: true.

Dump the memory store as JSON, JSONL, or Markdown. Optional since/until window on updated_at. Use for backup/inspection. Requires explicit_user_intent: true.