Cloudflare's Security Audit Skill for Coding Agents

TL;DR: cloudflare/security-audit-skill is a JavaScript skill that turns a coding agent into a structured, multi-phase security auditor. It cross-checks its own findings so a human can trust the output. MIT-licensed, sitting at 7,381 stars as of writing.

What it is

cloudflare/security-audit-skill describes itself as “a coding-agent skill for multi-phase security audits with independently verified, machine-readable findings.” The repo lives under the Cloudflare organisation on GitHub, the codebase is JavaScript, the license is MIT, and the repository has 7,381 stars and 429 forks. It is not archived and has no published topics.

The “skill” framing matters. The package is designed to slot into existing coding-agent runtimes — Claude Code, Codex, or any agent that consumes a SKILL.md-style manifest — rather than acting as a standalone CLI.

What it does well

The interesting design choice is the verification loop. Most security scanners produce findings; this one is explicit that the findings need to be machine-verifiable before the agent reports them back.

• Multi-phase audit. The skill walks the codebase in phases rather than running a single flat scan, which keeps each phase’s context window narrow enough for an LLM to reason about.
• Self-verification. Every flagged issue is re-checked by an independent pass before it is recorded, so the final report should not contain noise that a human reviewer has to filter out by hand.
• Structured output. Findings are emitted in a machine-readable form, which makes them easy to feed into a downstream tracker (PR comments, Jira tickets, a CI gate) without copy-pasting prose.
• Agent-native packaging. Distribution as a skill rather than a CLI means the audit workflow inherits whatever file reading, editing, and command execution the host agent already supports.

How to try it

Because the skill is consumed by an agent rather than invoked directly, the install path goes through your agent’s skill loader:

git clone https://github.com/cloudflare/security-audit-skill.git
# then point your agent at the cloned directory as a skill source

The agent that loads the skill will pick up the SKILL.md manifest, follow its phased procedure, and write a findings file once the verification pass completes.

When it fits, and when it doesn’t

The skill is a strong fit when you already use a coding agent as part of your normal review loop and you want one more structured gate before code lands. It is less attractive if you do not use a coding agent at all, because the verification harness assumes an LLM is driving it, or if you need a compliance-grade report for an external auditor — those workflows still benefit from a human-signed scan report alongside the skill’s output.

Cloudflare publishing the skill under MIT is a useful signal: it is reusable, forkable, and not gated to Cloudflare-only infrastructure.

Source and Accuracy Notes

• Project page: https://github.com/cloudflare/security-audit-skill
• Source repository: cloudflare/security-audit-skill (verified via GitHub API html_url)
• License: MIT (verified via GitHub API license.spdx_id)
• Stars at time of writing: 7,381
• Language: JavaScript
• Homepage: none provided in repository metadata