do-cybersecurity-review

do-cybersecurity-review is a skill for Claude Code from thermiteau/maverick. It costs 117 tokens per session (3,255 once invoked), scanned A, original, Apache-2.0.

A security-audit workflow for reviewing a codebase or a specific code change for security risks. It can scan the whole project and write a report, or review a supplied diff and the code affected by that diff.

In plain words
What is it for?
Use full-audit mode for an initial project-wide review, or update mode before a pull request to inspect a particular change.
Why use it?
It provides a security check before work is merged and separates findings from the code changes themselves; it does not fix the problems it finds.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

Part of the maverick plugin — 41 skills, 5 agents, 5 hooks shipped together

Good fit Use full-audit mode for an initial project-wide review, or update mode before a pull request to inspect a particular change.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/thermiteau/maverick/do-cybersecurity-review
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add thermiteau/maverick --skill do-cybersecurity-review
Clone the repo
git clone --depth 1 https://github.com/thermiteau/maverick

Made for: Claude Code.

Or install maverick, the plugin that ships this one along with the rest of its 41 skills, 5 agents, 5 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for do-cybersecurity-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/thermiteau/maverick/do-cybersecurity-review/github.svg)](https://agentmods.dev/skills/thermiteau/maverick/do-cybersecurity-review)
Your own site
<a href="https://agentmods.dev/skills/thermiteau/maverick/do-cybersecurity-review"><img src="https://agentmods.dev/badge/skills/thermiteau/maverick/do-cybersecurity-review/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for do-cybersecurity-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/thermiteau/maverick/do-cybersecurity-review"><img src="https://agentmods.dev/badge/skills/thermiteau/maverick/do-cybersecurity-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 117 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,255 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00117 $0.03255
Opus 5 $0.00059 $0.01628
Sonnet 5 $0.00023 $0.00651
Haiku 4.5 $0.00012 $0.00326

Measured 10d ago against content hash da4e8dd58d02, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

do-cybersecurity-review scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/do-cybersecurity-review/SKILL.md · 277 lines

How it starts

The opening of the file, as written. The whole thing — 277 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cybersecurity Review

Audit a codebase for security risks. Operates in two modes:

  • full-audit — scan the entire codebase. Used by do-init at adoption time and on demand. Produces docs/security-audit.md. Flips cybersecurity_reviewed milestone.
  • update — scoped to a diff, plus the code that could be impacted by the diff. Used by do-issue-solo and do-issue-guided as a mandatory pre-push gate before opening a PR. Returns a structured findings list to the orchestrator; does not flip the milestone (it's per-PR work, not a one-time milestone).

Refer to mav-bp-application-security for the standards each finding should be measured against. The skill surfaces risks; it does not modify code.

Preflight (mandatory)

Run this first. If it exits non-zero, halt and report the stderr output to the user verbatim. Do not proceed.

uv run maverick preflight do-cybersecurity-review

The check verifies the project is initialised and uv is on PATH.

Mode Selection

If $ARGUMENTS specifies a mode (full-audit or update), use it. If update is selected the caller must also pass a diff (via stdin or a file path); halt and ask for one if missing.

If no mode is specified, default to full-audit.

Full Audit Mode

1. Detect the project stack

Identify language, framework, and runtime so subsequent checks know what to look for. Use the same detectors as do-maverick-alignment: package.json, pyproject.toml, Dockerfile, etc.

2. Walk the audit categories

For each category below, search the codebase and assign one of:

  • PASS — no concerns surfaced
  • WARN — partial coverage or non-critical issues
  • FAIL — material risk; needs human attention
  • N/A — category does not apply to this project
2.1 Secret exposure

Scan tracked files for committed credentials, tokens, private keys, and connection strings. Patterns to check (extend per stack):

  • AKIA[0-9A-Z]{16} (AWS access key id), aws_secret_access_key\s*=
  • -----BEGIN (RSA |EC |OPENSSH )?PRIVATE KEY-----
  • ghp_, gho_, ghs_, github_pat_ (GitHub tokens)
  • xox[baprs]- (Slack tokens), sk- followed by 20+ alphanumerics (OpenAI/Anthropic-style)
  • Generic password\s*=\s*['"][^'"]+['"], api[_-]?key\s*=\s*['"][^'"]+['"]

Read the full file on GitHub · 277 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 277 lines · 117 tokens per session scan A da4e8dd58d02

Subscribe to this mod's changes

do-cybersecurity-review is a skill published in the GitHub repository thermiteau/maverick (11 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 117 tokens to every session and 3,255 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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