Marrow MCP Server

by getmarrow Your server? Claim it

local only

Marrow runs on your own machine — the client starts it, so there is no endpoint to ping. 931 installs a week from npm. Last commit 16 Sep 2026.

Runtime governance, proof, outcome closure, and fleet intelligence for MCP-compatible AI agents.

Installs per day peak 760 · avg 210 · +119% w/w

a month agotoday

931

Installs / week

npm · @getmarrow/mcp

Stars

0 open issues

16 Sep 2026

Last commit

0 releases in 90 days

MIT

License

JavaScript

Nothing serious here today

Today is the operative word: we check Marrow every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add marrow -- npx -y @getmarrow/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "marrow": {
      "args": [
        "-y",
        "@getmarrow/mcp"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.marrow]
command = "npx"
args = ["-y", "@getmarrow/mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "marrow": {
      "args": [
        "-y",
        "@getmarrow/mcp"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "marrow": {
      "args": [
        "-y",
        "@getmarrow/mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: MARROW_API_KEY (Named Marrow agent API key. Keep it in trusted secret storage.). The author declared them in the registry entry; get the values from the project itself.

Alternatives to Marrow

same job, measured the same way

Sleepwalker

by sleepwalker

AI Visibility and Content Intelligence tools for Claude and MCP-compatible agents.

answering

SpineFrame

by ratnaditya-j

Governance runtime for AI agents with signed provenance, compliance audits, and OSINT.

4 installs/wk local only

Toolstem MCP Server

by toolstem

Financial intelligence MCP for AI agents — DCF, ratios, comparisons. Pre-computed signals.

69 installs/wk local only

FiledProof

by davisvillelabs-filedproof

Primary-source SEC filing intelligence and financial/disclosure reconciliation for AI agents.

12 tools answering

Dingdawg Governance

by dingdawg

Universal governance layer for AI agents. MCP-native, fail-closed, audit proofs and rollback.

68 installs/wk local only

Zyfy MCP

by zyfy-uk

MCP server for Zyfy — UK postcode and vehicle intelligence for Claude and other AI agents

40 installs/wk local only

Mastyf AI

by mastyf-ai

Runtime proxy for MCP security, cost governance & audit

72 installs/wk local only

Ionexai MCP

by ionexai

Connected market-intelligence graph for AI agents: relationships, provenance, confluence.

answering

Marrow — questions

Answers built from our own checks of this server.

Why is there no uptime for Marrow?

Marrow runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package @getmarrow/mcp was installed 931 times last week.

How do I connect Marrow?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls @getmarrow/mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Marrow?

The npm package @getmarrow/mcp was installed 931 times in the last week. Week over week that is +119%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Marrow open source?

Yes — it is published under the MIT licence, written in JavaScript and 6 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.