LocalFree

Arc MCP server

hudsonkit/arc

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

15 GitHub stars

Install Arc in Claude Code

Claude Code
claude mcp add arc -- npx -y @hudsonkit/arc-mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "arc": {
      "command": "npx",
      "args": [
        "-y",
        "@hudsonkit/arc-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the Arc MCP server do?

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

Is the Arc MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Arc run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Arc to Claude Code?

Run: claude mcp add arc -- npx -y @hudsonkit/arc-mcp

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