Mermaid MCP App MCP Server

by finfin Your server? Claim it

local only

Mermaid MCP App runs on your own machine — the client starts it, so there is no endpoint to ping. 54 installs a week from npm. Last commit 25 Mar 2026.

MCP App that renders Mermaid diagrams as interactive UI in Claude, VS Code and other MCP clients

Installs per day peak 39 · avg 9 · -71% w/w

a month agotoday

Installs / week

npm · mermaid-mcp-app

Stars

0 open issues

25 Mar 2026

Last commit

no releases in 90 days

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check Mermaid MCP App 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 mermaid-mcp-app -- npx -y mermaid-mcp-app

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

{
  "mcpServers": {
    "mermaid-mcp-app": {
      "command": "npx",
      "args": [
        "-y",
        "mermaid-mcp-app"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.mermaid-mcp-app]
command = "npx"
args = ["-y", "mermaid-mcp-app"]

.cursor/mcp.json

{
  "mcpServers": {
    "mermaid-mcp-app": {
      "command": "npx",
      "args": [
        "-y",
        "mermaid-mcp-app"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "mermaid-mcp-app": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mermaid-mcp-app"
      ]
    }
  }
}

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answering

Mermaid MCP App — questions

Answers built from our own checks of this server.

Why is there no uptime for Mermaid MCP App?

Mermaid MCP App 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 mermaid-mcp-app was installed 54 times last week.

How do I connect Mermaid MCP App?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls mermaid-mcp-app straight from npm; nothing to host, nothing to sign up for.

How many people use Mermaid MCP App?

The npm package mermaid-mcp-app was installed 54 times in the last week. Week over week that is -71%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Mermaid MCP App open source?

Yes — it is published under the MIT licence, written in TypeScript and 1 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.