LocalFree

CRAYON C4 MCP server

SQUORA-NL/CRAYON.C4

Author, validate and maintain a CRAYON-C4 architecture model — never write an invalid file.

Source code

Install CRAYON C4 in Claude Code

Claude Code
claude mcp add crayon-c4 -- npx -y @crayon-c4/mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "crayon-c4": {
      "command": "npx",
      "args": [
        "-y",
        "@crayon-c4/mcp"
      ]
    }
  }
}

Frequently asked questions

What does the CRAYON C4 MCP server do?

Author, validate and maintain a CRAYON-C4 architecture model — never write an invalid file.

Is the CRAYON C4 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 CRAYON C4 run locally or remotely?

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

How do I add CRAYON C4 to Claude Code?

Run: claude mcp add crayon-c4 -- npx -y @crayon-c4/mcp

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