mcpbeat

Marrow MCP Server

id.marrow/marrow
answering

Marrow is answering right now. Last checked 12 min ago. 157 installs a week from npm.

Evidence-grounded, graph-connected, correctable memory for agents.

Installs per day peak 645 · avg 67 · -82% w/w
a month agotoday
Uptime history 40 hours of history · worst hour 75%
40 hours agonow
98.9%
Uptime 24h
90 of 91 checks
—
Tools
hidden behind auth
301 ms
Response time
average over 24h
157
Installs / week
npm and PyPI

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

run in your terminal
claude mcp add marrow --transport http https://mcp.marrow.id
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "marrow": {
      "url": "https://mcp.marrow.id"
    }
  }
}
~/.codex/config.toml
[mcp_servers.marrow]
url = "https://mcp.marrow.id"
.cursor/mcp.json
{
  "mcpServers": {
    "marrow": {
      "url": "https://mcp.marrow.id"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "marrow": {
      "url": "https://mcp.marrow.id"
    }
  }
}

This endpoint answered with an authorization challenge — the server is running, but you need an API key or OAuth to use it.

Endpoints

URLTransportStateLatencyChecked
https://mcp.marrow.id streamable-http needs key 352 ms 12 min ago

Marrow — questions

Answers built from our own checks of this server.

Why is there no tool list for Marrow?
The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 98.9% of checks in the last 24 hours got a reply.
Is Marrow working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 301 ms. The bar chart above shows every period we have measured.
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 is a remote server, so there is nothing to install — the client connects to the address. You will need your own key or an OAuth login: it refuses anonymous clients.
Does Marrow need an API key?
Yes. Every time we knock, Marrow answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.
How fast is Marrow?
It answers our handshake in 301 ms on average, which is faster than 46% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use Marrow?
The npm package @marrowid/cli was installed 157 times in the last week. Week over week that is -82%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.