Marrow MCP server

Read from the package source without running it. The installed server may list more.

• marrow_accept_detected

  Convert a detected decision pattern into an enforced workflow.

• marrow_agent_performance

  Get agent-facing fleet value metrics: avoided mistakes, reused winning decisions, failed patterns, token/time saved estimate, reliability score, and next improvements.

• marrow_agent_runtime

  One-call agent-native Marrow loop. Returns passive status, decision brief, risk gate, relevant lessons,

• marrow_agent_status

  Check whether Marrow is passively active for this agent or fleet.

• marrow_arbitrate

  Resolve conflicting next-step proposals from two or more tenant agents before execution.

• marrow_ask

  Query the collective hive in plain English.

• marrow_assign_project_policy_profile

  Assign an active governance policy profile to a project key. Mutating call; requires a key with full scope.

• marrow_auto

  Durably capture activity with bounded core completion. Respect retry_after_ms and reuse operation_id for pending continuation. Server-declared ordinary approval requires actual owner approval supplied in proof; arbitration requires its dashboard receipt. Lifecycle receipt queued is separate from server acceptance. Risky completion requires a fresh gate and measured proof.

• marrow_buyer_proof

  Return buyer-grade value proof: failures avoided, risky actions reviewed, proofs completed, token/time saved, failure classes, agent leaderboard, and reliability score.

• marrow_commit

  Close a recorded action with success/failure, a specific outcome, and required proof.

• marrow_completion_contracts

  List Marrow completion contracts for deploy, merge, publish, database migration, security change, support response, and Hermes goal workflows.

• marrow_coordinate

  Coordinate tenant agents without sharing transcripts. Acquire or release a bounded resource lease,

• marrow_create_handoffwrite action

  Create a structured cross-agent handoff that Marrow can track for pending, stale, blocked, and complete states.

• marrow_create_keywrite action

  Create a new API key. Full plaintext key is returned once — copy it now.

• marrow_create_policy_profilewrite action

  Create or update an explicit governance policy profile. Mutating call; requires a key with full scope.

• marrow_dashboard

  Get operator dashboard — account health, top failures, workflow status, recent activity, Marrow's saves metric.

• marrow_decision_brief

  One pre-action call before meaningful or risky work. Returns risk level, workflow/playbook steps,

• marrow_decision_trace

  Inspect the tenant-scoped path behind one governed decision and return its owner-readable intervention receipt with gate, required workflow, permit follow-through, proof, and observed outcome.

• marrow_delete_memorywrite action

  Soft delete a memory.

• marrow_digest

  Get periodic summary of agent activity and Marrow impact (default 7-day period).

• marrow_evaluate_completion_contract

  Evaluate whether an agent has enough proof to mark work complete. Returns complete, missing_proof, review_required, or blocked with missing proof fields.

• marrow_export_memories

  Export memories to JSON or CSV.

• marrow_first_value

  First-run Marrow value proof. Returns what is captured, whether outcome closure/runtime gate are active,

• marrow_fleet_lessons

  Retrieve ranked reusable fleet lessons before similar work. Use before deploys, handoffs, migrations, audits, and repeated task types.

• marrow_get_key

  Get a single API key by ID. The key value is masked after creation.

• marrow_get_memory

  Get a single memory by ID.

• marrow_governance_control_plane

  Return Marrow control-plane proof: governance, runtime gates, proof packs, fleet intelligence, supported harnesses, and exact next action.

• marrow_governance_timeline

  Return the recent fleet governance timeline across decisions, risk gates, and proof-pack events.

• marrow_handoff_status

  Ask who is pending, stuck, stale, blocked, or complete across the agent fleet.

• marrow_hermes_integration

  Return the Hermes Agent integration guide mapping /goal, verification evidence, /learn, /journey, and background subagents into Marrow proof and outcome workflows.

• marrow_import_memories

  Import memories with merge (dedup) or replace mode.

• marrow_install_template

  Install a workflow template into your fleet as an active workflow.

• marrow_list_keys

  List API keys. Keys are masked here by design.

• marrow_list_memories

  List memories with optional filters (status, query, limit, agent_id for shared memories).

• marrow_list_templates

  Browse pre-built workflow templates. Filter by industry (insurance, healthcare, ecommerce, legal, saas, fintech, media, enterprise) or category.

• marrow_mark_outdated

  Mark a memory as outdated.

• marrow_mode_recommend

  Recommend passive, pilot, or enforce mode from project/workflow signals. Marrow never auto-switches here; the agent/user must accept or override.

• marrow_model_usage

  Record compact model token usage for value proof. Use when the harness exposes provider/model token counts. Do not send raw prompts, completions, tool logs, secrets, or customer content.

• marrow_orient

  Call at session start or before meaningful work.

• marrow_policy_profiles

  List saved Marrow governance policy profiles for this account. Returns default-business when none are saved.

• marrow_policy_resolve

  Resolve the explicit mode for a project/workflow from saved policy profiles, falling back to recommendation. Does not auto-apply.

• marrow_record_deployment_memory

  Record deploy or incident memory: PR, commit, tests, smoke result, rollback plan, production health, and incident notes.

• marrow_replay_compare

  Compare two already-recorded outcomes for the same tenant task using durable proof.

• marrow_retrieve_memories

  Full-text search memories with filters (from, to, tags, source, status, shared).

• marrow_revoke_key

  Revoke an API key by ID.

• marrow_rotate_key

  Rotate an API key by ID. Full plaintext key is returned once — copy it now.

• marrow_runwrite action

  Governed outcome capture. Records intent, obtains a gate for risky work, and closes only with an explicit measured result.

• marrow_runtime_status

  Read live Marrow runtime hook diagnostics from /v1/agent/status.

• marrow_session_end

  Explicitly end the current session. Optionally auto-commits any open decision.

• marrow_share_memory

  Share a memory with specific agents.

• marrow_status

  Check Marrow platform health and status.

• marrow_supersede_memory

  Atomically replace a memory with a new version.

• marrow_think

  Record intent and retrieve authorized governance intelligence before acting.

• marrow_update_handoffwrite action

  Update a Marrow handoff checkpoint/status when an agent accepts, blocks, completes, or needs review.

• marrow_update_memorywrite action

  Update memory text, tags, or metadata.

• marrow_value_report

  Get owner-ready proof of Marrow value for this agent or fleet.

• marrow_workflow

  Interact with Marrow Workflow Registry. Register, start, and advance multi-step workflows.

• marrow_workflow_gate

  Pre-action risk gate for deploys, publishes, merges, DB migrations, key rotation, destructive commands, and production work.

• Code scan46 source files scanned25/25
• –Live reliabilityno gateway calls yet and no remote to proben/a
• –Tool poisoningtools not inspected (local package is not executed); not countedn/a
• Auth qualitystatic API keys via environment variables6/15
• Maintenancelast push 3 days ago15/15
• Maintainer identityregistry namespace matches repository owner7/10

Marrow: common questions

Is Marrow MCP server safe?

Mostly: it is graded B (82/100). Read the Marrow safety report

How do I install Marrow?

It runs on your machine. Copy the Claude Code, Claude Desktop or Cursor config from the install section.

Does Marrow need an API key?

Yes. The registry entry asks for MARROW_API_KEY.

Is Marrow maintained?

The last commit was 5 days ago (2026-09-16). The latest release is v3.9.88.