mcpbeat

Mailchimp MCP Server

io.usefulapi/mailchimp
not responding

Mailchimp is listed as active in the registry but did not answer our last check. Last commit 1 Aug 2026.

Read audiences, members, campaigns and reports; add, update, tag and archive subscribers.

Uptime history 39 hours of history · worst hour 0%
39 hours agonow
27.5%
Uptime 24h
25 of 91 checks
—
Tools
hidden behind auth
186 ms
Response time
average over 24h
0
Stars
last commit 1 Aug 2026

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 mailchimp --transport http https://mailchimp.usefulapi.io/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "mailchimp": {
      "url": "https://mailchimp.usefulapi.io/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.mailchimp]
url = "https://mailchimp.usefulapi.io/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "mailchimp": {
      "url": "https://mailchimp.usefulapi.io/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "mailchimp": {
      "url": "https://mailchimp.usefulapi.io/mcp"
    }
  }
}

Endpoints

URLTransportStateLatencyChecked
https://mailchimp.usefulapi.io/mcp streamable-http answering 45 ms 12 min ago

Mailchimp — questions

Answers built from our own checks of this server.

Is Mailchimp working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 25 of 91 checks got a reply (27.5%), average response time 186 ms. The bar chart above shows every period we have measured.
The registry lists Mailchimp as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Mailchimp?
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.
Does Mailchimp need an API key?
No. Mailchimp completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. This is what we observed, not what the docs claim.
How fast is Mailchimp?
It answers our handshake in 186 ms on average, which is faster than 66% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Mailchimp open source?
Yes — it is published under the MIT licence, written in JavaScript and 0 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.