Arc MCP Server

by hudsonkit Your server? Claim it

local only

Arc runs on your own machine — the client starts it, so there is no endpoint to ping. 16 installs a week from npm. Last commit 26 Oct 2026.

Author, validate, lay out, render, and diff architecture diagrams as code.

Installs per day peak 16 · avg 0

a month agotoday

Installs / week

npm · @hudsonkit/arc-mcp

Stars

0 open issues

26 Oct 2026

Last commit

5 releases in 90 days

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check Arc 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 arc -- npx -y @hudsonkit/arc-mcp

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

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

~/.codex/config.toml

[mcp_servers.arc]
command = "npx"
args = ["-y", "@hudsonkit/arc-mcp"]

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "arc": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@hudsonkit/arc-mcp"
      ]
    }
  }
}

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Arm MCP Server

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Arc — questions

Answers built from our own checks of this server.

Why is there no uptime for Arc?

Arc 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 @hudsonkit/arc-mcp was installed 16 times last week.

How do I connect Arc?

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 @hudsonkit/arc-mcp straight from npm; nothing to host, nothing to sign up for.

How many people use Arc?

The npm package @hudsonkit/arc-mcp was installed 16 times in the last week. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Arc open source?

Yes — it is published under the MIT licence, written in TypeScript and 14 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.