ctfd-mcp

stdio

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

Install

uvx ctfd-mcp

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.

★ 24 GitHub stars