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.
npx agentmods add skills/phelan164/codex-howto/review-codenpx skills add Phelan164/codex-howto --skill review-codegit clone --depth 1 https://github.com/Phelan164/codex-howtoWrote 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.
[](https://agentmods.dev/skills/phelan164/codex-howto/review-code)<a href="https://agentmods.dev/skills/phelan164/codex-howto/review-code"><img src="https://agentmods.dev/badge/skills/phelan164/codex-howto/review-code.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00057 | $0.00462 |
| Opus 5 | $0.00028 | $0.00231 |
| Sonnet 5 | $0.00011 | $0.00092 |
| Haiku 4.5 | $0.00006 | $0.00046 |
Grade A, and why
review-code 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 3d 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.
How it starts
The opening of the file, as written. The whole thing — 55 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Review Code
Workflow
- Establish the review target and comparison base.
- Inspect the diff, then trace changed behavior through callers, contracts, persistence, side effects, and tests.
- Inspect the target, isolation, fixtures, and side effects before running a narrow check that materially confirms a suspected issue.
- Rank findings by impact and confidence; remove duplicates and speculation.
- Return findings first, followed by open questions and a short summary.
Use correctness as the default lens. For large, risky, or requirement-heavy changes, add the standards and specification lenses in references/review-lenses.md. Keep each finding tied to its source; documented rules and acceptance criteria outrank personal preference.
Finding standard
Each finding must include:
- severity;
- precise file and line or symbol;
- the failing scenario or invariant;
- user or system impact;
- evidence or a reproduction path;
- a concise fix direction when clear.
Do not report style preferences, theoretical risks without a reachable path, or issues outside the change unless the diff materially exposes them.
Review boundaries
- Review in read-only mode by default.
- Do not run production-integrated, shared-environment, or destructive tests without explicit authorization and verified isolation.
- Do not modify, comment, approve, or request changes on a remote PR unless asked.
- Do not equate passing tests with correctness.
- Do not treat generated code or lockfile churn as a defect without understanding its source.
- Respect repository-specific compatibility and risk rules.
- State when a claim was not reproduced.
Checklist
Read references/review-checklist.md when the change touches APIs, data, authorization, concurrency, infrastructure, or tests.
Output
If there are no actionable findings, say so directly and name residual unverified areas. Keep the summary shorter than the findings.
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 3d ago First seen · 55 lines · 57 tokens per session scan A 55c15fab4eb0
review-code is a skill published in the GitHub repository Phelan164/codex-howto (3 stars, last pushed 5d ago), licensed MIT. It adds 57 tokens to every session and 462 once invoked, about $0.0003 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 2026-08-31.
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