code-review

A review helper for uncommitted code changes. It examines the Git diff for security vulnerabilities, correctness problems, code-quality issues, and patterns that make code harder to maintain.

In plain words
What is it for?
Use it before committing or merging local changes. It reviews changed files for security issues, oversized or deeply nested code, missing error handling, noisy documentation, and deviations from project expectations.
Why use it?
It provides a repeatable review of pending changes and highlights serious problems such as secret leaks, injection risks, missing validation, overengineering, and hidden failures.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/sjarmak/coding-agent-workflows/code-review
Any agent
npx skills add sjarmak/coding-agent-workflows --skill code-review
Clone the repo
git clone --depth 1 https://github.com/sjarmak/coding-agent-workflows

Made for: Claude Code, Codex.

Per session 37 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 425 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00037 $0.00425
Opus 5 $0.00018 $0.00212
Sonnet 5 $0.00007 $0.00085
Haiku 4.5 $0.00004 $0.00042

Measured yesterday against content hash 2311dde2a757, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 yesterday.

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.

source/skills/code-review/SKILL.md · 60 lines

What it actually says

Code Review

Comprehensive security and quality review of uncommitted changes:

  1. Get changed files: git diff --name-only HEAD

  2. For each changed file, check for:

Security Issues (CRITICAL):

  • Hardcoded credentials, API keys, tokens
  • SQL injection vulnerabilities
  • XSS vulnerabilities
  • Missing input validation
  • Insecure dependencies
  • Path traversal risks

Code Quality (HIGH):

  • Functions > 50 lines
  • Files > 800 lines
  • Nesting depth > 4 levels
  • Missing error handling
  • console.log statements
  • TODO/FIXME comments
  • Missing JSDoc for public APIs

AI Slop & Erosion (HIGH) — see the anti-slop rule (rules/reference/anti-slop.md), weight toward code that extends existing modules:

  • Overengineering: single-implementer interfaces, single-entry registries, factories returning a constant
  • Documentation noise: narration comments, docstrings that restate the function name
  • Premature optimization: caching constants, parallelism for tiny collections
  • Error obscuring: success booleans / sentinel values instead of raised errors, retries swallowing failures
  • Hidden behavior: silent fallbacks, auto-correction without warning
  • Spec deviation: unrequested features, validation that never changes an outcome

Best Practices (MEDIUM):

  • Mutation patterns (use immutable instead)
  • Emoji usage in code/comments
  • Missing tests for new code
  • Accessibility issues (a11y)
  1. Generate report with:

    • Severity: CRITICAL, HIGH, MEDIUM, LOW
    • File location and line numbers
    • Issue description
    • Suggested fix
  2. Block commit if CRITICAL or HIGH issues found

Never approve code with security vulnerabilities!

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. yesterday First seen · 60 lines · 37 tokens per session scan A 2311dde2a757

Subscribe to this mod's changes

code-review is a skill published in the GitHub repository sjarmak/coding-agent-workflows (2 stars, last pushed 1mo ago), licensed MIT. It adds 37 tokens to every session and 425 once invoked, about $0.0002 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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