ctfd-mcp

stdionone★ 24development

MCP server for CTFd that lets regular users browse challenges, manage dynamic instances, and submit flags.

Install

How to run this server

[ { "cmd": "uvx ctfd-mcp", "imports": [] } ]

server path: ctfd-mcp

Tools

What this server exposes

list_challenges

List visible challenges, optional category/unsolved filter.

challenge_details

Description (HTML + description_text), metadata, attachment URLs, solved status.

submit_flag

Attempt a flag; returns status/message.

start_container

Unified start; auto-detects dynamic_docker, ctfd-owl or k8s /api/v1/k8s.

stop_container

Unified stop; whale can be stopped with just container_id, owl/k8s need challenge_id.

Configuration

Environment & auth

authnone

envCTFD_URL

envCTFD_TOKEN

envCTFD_CSRF_TOKEN

Resources