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mcp/harbor
Grok

CTFd for Grok

io.github.mrjamescot/ctfd-mcp-server

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

client:Grok transport:stdio runtime:pypi

Install CTFd in Grok

.mcp.json (in your project root)

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

{
  "mcpServers": {
    "ctfd-mcp-server": {
      "type": "stdio",
      "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>"
      }
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

CTFd in other clients

CTFd MCP server