Search RMS Memory. Returns a decision envelope: {decision: inject|abstain, reason, injected_ids, results}. corpus=vault (default) searches human Markdown memory; code searches derived semantic code; all ranks each corpus independently and combines them with Reciprocal Rank Fusion, never raw vector distances. Pass projects: [key, …] for read-only cross-project federation (when both project and projects are set, projects wins so injected rules stay compatible); vault/all across multiple projects requires every listed key to have cross_project_vault=true (hard error otherwise — no silent degrade). Weak matches abstain when min_score is set; content is bounded by max_chars.

Search only the derived semantic code index. Results include language, file, symbol, kind, line range, and segment index. The code index is optional, so an unindexed project returns an empty result list. Pass projects: [key, …] for read-only cross-project code federation (when both project and projects are set, projects wins); does not change the active bind.

Read the full contents of a markdown document from the RMS Memory vault. Provide the relative path (e.g., 'rules/api.md'). Use this to retrieve the full context of a document found via rms_search.

Save new architectural decisions, constraints, development rules, or project context to the RMS Memory vault. Use this tool PROACTIVELY at the end of a task if you learned a new user preference, solved a tricky bug, or made a new architectural decision.

Query the derived code_path git file→commit history cache (no shell). Prefer this over git log for when a source file changed. Lazy catch-up on query; use action=reindex after force-push/rebase (requires explicit project). Default response omits commit messages. Catch-up/reindex enforce commit-count budgets.

Query and mutate the durable Markdown/code knowledge graph (MCP-first). Actions: status, ensure (reconcile vault links if empty or force=true), neighbors, path (BFS), snapshot, semantic (ephemeral embedding edges), create_edge / suppress_edge / edge_override (mutations require explicit project), export_dot. Prefer this for dependency traversal instead of guessing from search alone.

Run the seven-point vault health diagnostics (structure, IDs, links, LanceDB, wiki isolation, registry, freshness). Returns structured JSON. Set repair_frontmatter=true only with an explicit project (refuses sticky-bind repair).

Full rebuild of vault and/or code indexes. Destructive to derived tables — requires explicit project. Prefer rms_sync for incremental catch-up.

Incremental vault index sync (same as CLI rms-memory sync). Prefer an explicit project when the IDE is multi-root.

Generate a wiki context pack from the vault and code index. Returns material for an agent to create human-readable wiki documentation from verified sources.

List registered RMS Memory project keys. This tool works even when the MCP client did not provide a workspace root.

Structured orientation summary for exactly one project: document counts by folder and status, recent notes, and active checkpoints. Call this at session start. Fail-closed: requires a bound workspace or an explicit project key; never aggregates across projects.

Find superseded vault notes older than a retention window and optionally archive them under artifacts/pruned/. Defaults to a dry run; set apply=true to archive candidates. Never deletes notes.

Create or update a session checkpoint (artifacts/checkpoints/.md, status=active). Save before context compaction or a long pause so work can be resumed. Updating preserves id/created_at and keeps omitted fields.

Close a checkpoint: marks it status=done (drops out of recall) and writes a durable session summary note under artifacts/sessions/.

Load one checkpoint with its full body and bounded previews of linked notes. Use rms_checkpoint_query first to find names.

List checkpoints for the current project, newest first, with full pending text. Filter with status=active|done|all (default all).

Return the canonical RMS Memory usage protocol (search-first, persist, session continuity). Lets an agent self-bootstrap without injected rule files.