security-audit-skill

Cloudflare's Security Audit Skill turns a coding agent into a vulnerability auditor. A skill is a module you add to an AI coding agent to give it a specific job. This one runs a six-phase audit: it maps your app, sends parallel agents to attack from different angles, then has separate agents try to disprove each finding before it gets reported. The philosophy is blunt, only report what you can actually exploit, with a concrete attack scenario, not a checklist of maybes. MIT licensed and free.

There is no service to run. You install it into your agent with one command, npx skills add, and ask it to audit a codebase. The only real dependency is a coding agent that supports tool use and parallel sub-agents, plus Node for schema validation. The cost you do pay is model tokens, since the multi-phase, multi-agent design burns through a lot of them on a real codebase. The independent verification pass exists to cut false positives, which is the usual failure mode of AI security scanners.

For solo developers and small teams without a security budget, this is a strong first pass and it is free. Larger teams should treat it as one input, not a replacement for a real pentest or a human reviewer.

The catch: it is only as good as the agent running it and the tokens you feed it. It finds plausible issues and verifies them, but it does not replace someone who actually understands your threat model.