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mcp/harbor
Claude Desktop

CTFd for Claude Desktop

io.github.mrjamescot/ctfd-mcp-server

MCP server for CTFd v3: list challenges, submit flags, and query scoreboards via AI agents.

client:Claude Desktop transport:stdio runtime:pypi

Install CTFd in Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "ctfd-mcp-server": {
      "command": "uvx",
      "args": [
        "ctfd-mcp-server"
      ],
      "env": {
        "CTFD_BASE_URL": "<CTFD_BASE_URL>",
        "CTFD_ADMIN_TOKEN": "<CTFD_ADMIN_TOKEN>",
        "CTFD_SESSION_COOKIE": "<CTFD_SESSION_COOKIE>",
        "CTFD_USERNAME": "<CTFD_USERNAME>",
        "CTFD_PASSWORD": "<CTFD_PASSWORD>",
        "CTFD_HTTP_TIMEOUT": "<CTFD_HTTP_TIMEOUT>"
      }
    }
  }
}

Settings → Developer → Edit Config opens this file. Restart the app after saving. Claude Desktop docs

CTFd in other clients

CTFd MCP server