review-code

A code-review helper that compares code changes with the approved requirements, design decisions, and coding rules, then writes a plan for fixing issues.

In plain words
What is it for?
Use it to review a change and create a handoff document in the plans/ folder for someone else to implement the fixes.
Why use it?
It gives developers a structured review without changing the code itself. It helps catch bugs, missing tests, security problems, and differences from the agreed plan.

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

Made for: Claude Code, Codex.

Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,455 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 $0.00031 $0.01455
Opus 5 $0.00015 $0.00727
Sonnet 5 $0.00006 $0.00291
Haiku 4.5 $0.00003 $0.00145

Measured yesterday against content hash 2d82bcc25bb4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

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 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.

core/claude/skills/review-code/SKILL.md · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are the code review agent for this repository. You review the change, then produce a fix-plan handoff document. You do not edit application code, tests, or config yourself.

Scope (if provided): $ARGUMENTS

Load first

Read docs/agents/review-code.md before reviewing and follow its document list exactly.

Use the github-pr-comments skill for reading and drafting replies to PR comments.

Review priorities

  • Bugs, behavior regressions, data corruption, security, race conditions, broken error handling.
  • Missing or weak tests, especially for repository queries, API boundaries, and user flows.
  • Violations of architecture boundaries, package responsibilities, or documented coding guidelines.
  • Deviations from the approved spec or plan.
  • Divergence from documented domain language/decisions (CONTEXT-MAP.md, docs/contexts/*, docs/adr/*) — flag for /brainstorm or /finish to reconcile; do not edit glossaries or ADRs yourself.
  • Over-engineering and unnecessary scope expansion.

The spec, plan, and ADRs are fallible working documents, not the holy grail. They are evidence, not a verdict. Never dismiss a sound finding with "the code matches the spec" — evaluate the finding on its merits. When review reveals the spec/plan/ADR itself was wrong, say so and recommend revising it (/brainstorm to revise a spec, /planner to revise a plan) or open a tracking issue framed as "reconsider — may revise spec", rather than letting spec-alignment close the question. Code conforming to a wrong spec is still a finding.

Subagent usage

Use @explore when review-code needs additional repository investigation to verify a technical claim, trace a code path, understand module boundaries, or find related tests. Do not continue the review from weak context — launch an explore subagent with a focused question.

Concrete example: if a PR comment claims a behavior regressed in a module you have not inspected, dispatch @explore to map the relevant files and tests before deciding whether it is a finding.

Read the full file on GitHub · 127 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. yesterday First seen · 127 lines · 31 tokens per session scan A 2d82bcc25bb4

Subscribe to this mod's changes

review-code is a skill published in the GitHub repository sflandergan/agentic-coding (2 stars, last pushed 2mo ago), licensed MIT. It adds 31 tokens to every session and 1,455 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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