Invoke ANY m3 catalog tool by name without loading its domain — the low-token path to the full tool surface, and the way to reach every tool not loaded at startup. Single call: pass tool (e.g. 'files_stats') and args (an object). Batch: pass batch, a list of {tool, args} (each isolated — one failure won't abort the rest; capped at 100). Set dry_run to validate args + check the destructive gate WITHOUT executing. Returns JSON. Call m3_index first if you don't know a tool's args. Destructive tools are refused unless mcp.allow_destructive is enabled (m3 config set mcp.allow_destructive true).

Store a new memory and, by default, embed it for semantic search. For a new fact; to replace a specific memory whose id you know use memory_supersede, and to edit one in place memory_update. An embedded write is checked against existing memories of the same type from the same agent: if it closely matches one (cosine > 0.92 by default) but says something different, the old one is superseded automatically. type='auto' lets the LLM choose the type.

Replace one specific memory, by its full id, with a new version. Use it when you know which memory a new fact replaces; memory_write's automatic contradiction check may link the wrong one or none. Non-destructive: the old memory is closed, not deleted (still retrievable by id, in memory_history and in as_of search, linked new -> old by a 'supersedes' edge); it only leaves default search. Pass content to create the successor (type, title, importance and scope you omit are inherited), or replacement_id (a full UUID) to retire old_id into an EXISTING active memory without creating one: the way to clean up duplicates. Exactly one of the two. old_id must be the full UUID; a prefix is rejected (full UUID required for mutation safety; memory_get accepts a prefix). To remove a memory use memory_delete.

Find memories by meaning and keywords: hybrid by default; search_mode semantic (vector only) or keyword (lexical only). Returns the top k matches, ranked, with their ids; grade the ones you use with memory_grade. Narrow with type_filter, agent_filter, user_id, scope or conversation_id; as_of searches the store as it was at a past time. Use chatlog_search for captured chat turns and files_search for indexed files.

Retrieves a full MemoryItem; accepts full UUID or 8-char prefix; ambiguous prefixes return an error.

Search chat_log rows. FTS5 keyword when query is non-empty; filter-only when empty.