CTFd

MCP server · by MrJamescot

Developer Tools Python v1.0.4

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

View source ↗ Generate config for multiple servers More servers

Install

Pin version registry version 1.0.4

Python
uvx ctfd-mcp-server

Python
uvx ctfd-mcp-server@1.0.4

Setup by client

Pick your client — the config below is generated for this server (local stdio). Copy respects the “Pin version” switch above.

claude_desktop_config.json

{
  "mcpServers": {
    "ctfd-mcp-server": {
      "command": "uvx",
      "args": [
        "ctfd-mcp-server"
      ],
      "env": {
        "CTFD_BASE_URL": "<YOUR_CTFD_BASE_URL>",
        "CTFD_ADMIN_TOKEN": "<YOUR_CTFD_ADMIN_TOKEN>",
        "CTFD_SESSION_COOKIE": "<YOUR_CTFD_SESSION_COOKIE>",
        "CTFD_PASSWORD": "<YOUR_CTFD_PASSWORD>"
      }
    }
  }
}

{
  "mcpServers": {
    "ctfd-mcp-server": {
      "command": "uvx",
      "args": [
        "ctfd-mcp-server@1.0.4"
      ],
      "env": {
        "CTFD_BASE_URL": "<YOUR_CTFD_BASE_URL>",
        "CTFD_ADMIN_TOKEN": "<YOUR_CTFD_ADMIN_TOKEN>",
        "CTFD_SESSION_COOKIE": "<YOUR_CTFD_SESSION_COOKIE>",
        "CTFD_PASSWORD": "<YOUR_CTFD_PASSWORD>"
      }
    }
  }
}

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add --env CTFD_BASE_URL=<YOUR_CTFD_BASE_URL> --env CTFD_ADMIN_TOKEN=<YOUR_CTFD_ADMIN_TOKEN> --env CTFD_SESSION_COOKIE=<YOUR_CTFD_SESSION_COOKIE> --env CTFD_PASSWORD=<YOUR_CTFD_PASSWORD> ctfd-mcp-server -- uvx ctfd-mcp-server

claude mcp add --env CTFD_BASE_URL=<YOUR_CTFD_BASE_URL> --env CTFD_ADMIN_TOKEN=<YOUR_CTFD_ADMIN_TOKEN> --env CTFD_SESSION_COOKIE=<YOUR_CTFD_SESSION_COOKIE> --env CTFD_PASSWORD=<YOUR_CTFD_PASSWORD> ctfd-mcp-server -- uvx ctfd-mcp-server@1.0.4

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json

{
  "mcpServers": {
    "ctfd-mcp-server": {
      "command": "uvx",
      "args": [
        "ctfd-mcp-server"
      ],
      "env": {
        "CTFD_BASE_URL": "<YOUR_CTFD_BASE_URL>",
        "CTFD_ADMIN_TOKEN": "<YOUR_CTFD_ADMIN_TOKEN>",
        "CTFD_SESSION_COOKIE": "<YOUR_CTFD_SESSION_COOKIE>",
        "CTFD_PASSWORD": "<YOUR_CTFD_PASSWORD>"
      }
    }
  }
}

{
  "mcpServers": {
    "ctfd-mcp-server": {
      "command": "uvx",
      "args": [
        "ctfd-mcp-server@1.0.4"
      ],
      "env": {
        "CTFD_BASE_URL": "<YOUR_CTFD_BASE_URL>",
        "CTFD_ADMIN_TOKEN": "<YOUR_CTFD_ADMIN_TOKEN>",
        "CTFD_SESSION_COOKIE": "<YOUR_CTFD_SESSION_COOKIE>",
        "CTFD_PASSWORD": "<YOUR_CTFD_PASSWORD>"
      }
    }
  }
}

Format verified against the official Cursor docs ↗.

.vscode/mcp.json

{
  "servers": {
    "ctfd-mcp-server": {
      "command": "uvx",
      "args": [
        "ctfd-mcp-server"
      ],
      "env": {
        "CTFD_BASE_URL": "<YOUR_CTFD_BASE_URL>",
        "CTFD_ADMIN_TOKEN": "<YOUR_CTFD_ADMIN_TOKEN>",
        "CTFD_SESSION_COOKIE": "<YOUR_CTFD_SESSION_COOKIE>",
        "CTFD_PASSWORD": "<YOUR_CTFD_PASSWORD>"
      }
    }
  }
}

{
  "servers": {
    "ctfd-mcp-server": {
      "command": "uvx",
      "args": [
        "ctfd-mcp-server@1.0.4"
      ],
      "env": {
        "CTFD_BASE_URL": "<YOUR_CTFD_BASE_URL>",
        "CTFD_ADMIN_TOKEN": "<YOUR_CTFD_ADMIN_TOKEN>",
        "CTFD_SESSION_COOKIE": "<YOUR_CTFD_SESSION_COOKIE>",
        "CTFD_PASSWORD": "<YOUR_CTFD_PASSWORD>"
      }
    }
  }
}

Format verified against the official VS Code docs ↗.

mcp_config.json

{
  "mcpServers": {
    "ctfd-mcp-server": {
      "command": "uvx",
      "args": [
        "ctfd-mcp-server"
      ],
      "env": {
        "CTFD_BASE_URL": "<YOUR_CTFD_BASE_URL>",
        "CTFD_ADMIN_TOKEN": "<YOUR_CTFD_ADMIN_TOKEN>",
        "CTFD_SESSION_COOKIE": "<YOUR_CTFD_SESSION_COOKIE>",
        "CTFD_PASSWORD": "<YOUR_CTFD_PASSWORD>"
      }
    }
  }
}

{
  "mcpServers": {
    "ctfd-mcp-server": {
      "command": "uvx",
      "args": [
        "ctfd-mcp-server@1.0.4"
      ],
      "env": {
        "CTFD_BASE_URL": "<YOUR_CTFD_BASE_URL>",
        "CTFD_ADMIN_TOKEN": "<YOUR_CTFD_ADMIN_TOKEN>",
        "CTFD_SESSION_COOKIE": "<YOUR_CTFD_SESSION_COOKIE>",
        "CTFD_PASSWORD": "<YOUR_CTFD_PASSWORD>"
      }
    }
  }
}

Format verified against the official Windsurf docs ↗.

Environment variables

Defined in the server's official registry manifest. Required secrets are shown as <YOUR_…> placeholders in the configs above.

CTFD_BASE_URL required — Root URL of the CTFd v3 instance, e.g. https://ctf.example.com (without /api/v1)
CTFD_ADMIN_TOKEN secret — CTFd API access token (preferred authentication method)
CTFD_SESSION_COOKIE secret — Full CTFd session cookie, e.g. session=abc...
CTFD_USERNAME — Username for CTFd form login
CTFD_PASSWORD secret — Password for CTFd form login
CTFD_HTTP_TIMEOUT — Per-request HTTP timeout in seconds (default 15)

GitHub

⭐ 7 stars · 最近更新于 52 天前 · MIT license

About this server

Distributed as Python, listed under Developer Tools. Review our MCP security guide before granting access to real data.

Frequently asked questions

How do I install CTFd?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is CTFd free to use?

The MCP server itself is free to install. The source is public on https://github.com/MrJamescot/ctfd-mcp-server. Any third-party service it calls may require its own API key and account.

Which clients support CTFd?

Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.

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