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 skills add jasonkneen/agent-skills --skill code-reviewgit clone --depth 1 https://github.com/jasonkneen/agent-skillsWrote 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/jasonkneen/agent-skills/code-review)<a href="https://agentmods.dev/skills/jasonkneen/agent-skills/code-review"><img src="https://agentmods.dev/badge/skills/jasonkneen/agent-skills/code-review.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 5.1 | $0.00000 | $0.00271 |
| Opus 5 | $0.00000 | $0.00135 |
| Sonnet 5 | $0.00000 | $0.00054 |
| Haiku 4.5 | $0.00000 | $0.00027 |
Grade A, and why
code-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 8d 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.
What it actually says
Code Review Skill
Purpose
Provide consistent, high-signal code reviews by focusing on correctness, clarity, maintainability, security, performance, tests, and developer experience.
Inputs
- PR description and linked issues
- Code diffs and file context
- Existing conventions in the repository
Review Checklist
Correctness
- Does the change satisfy the requirements?
- Are edge cases handled?
- Are errors propagated/handled appropriately?
Readability & Maintainability
- Is the code easy to follow?
- Are names clear and consistent?
- Is complexity justified?
- Are public APIs documented?
Security
- Validate/encode untrusted input
- Avoid leaking secrets/PII
- Check authZ/authN boundaries
Performance
- Watch for N+1 queries, unnecessary allocations, inefficient loops
- Ensure any tradeoffs are explained
Testing
- Are tests added/updated?
- Do tests cover failure cases and boundaries?
- Are tests deterministic and fast?
Style & Consistency
- Follows project lint/format rules
- No dead code or commented-out blocks
Output Format
- Summary of change
- Key issues (must-fix)
- Suggestions (nice-to-have)
- Questions/uncertainties
Tone
Be constructive and specific. Prefer actionable suggestions with examples.
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.
- 8d ago First seen · 48 lines · 0 tokens per session scan A 3f5ac196f8ea
code-review is a skill published in the GitHub repository jasonkneen/agent-skills (20 stars, last pushed 7mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 271 tokens. 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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