deep-code-review

deep-code-review is a skill for Claude Code, Codex from YankielDBC2/codex-skills-library. It costs 30 tokens per session (322 once invoked), scanned A, original, MIT.

A structured review method for code changes, pull requests, architecture decisions, security concerns, regressions, and maintainability.

In plain words
What is it for?
It helps inspect diffs, changed files, public interfaces, dependencies, tests, validation, authentication boundaries, and security risks before merging.
Why use it?
A review can miss serious bugs or become noisy with subjective comments. This method focuses on problems that could affect correctness, safety, testing, or future changes.

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/yankieldbc2/codex-skills-library/deep-code-review
Any agent
npx skills add YankielDBC2/codex-skills-library --skill deep-code-review
Clone the repo
git clone --depth 1 https://github.com/YankielDBC2/codex-skills-library

Made for: Claude Code, Codex.

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 deep-code-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/yankieldbc2/codex-skills-library/deep-code-review.svg)](https://agentmods.dev/skills/yankieldbc2/codex-skills-library/deep-code-review)
Your own site
<a href="https://agentmods.dev/skills/yankieldbc2/codex-skills-library/deep-code-review"><img src="https://agentmods.dev/badge/skills/yankieldbc2/codex-skills-library/deep-code-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 322 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 $0.00030 $0.00322
Opus 5 $0.00015 $0.00161
Sonnet 5 $0.00006 $0.00064
Haiku 4.5 $0.00003 $0.00032

Measured 4d ago against content hash 61802e6e745e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

deep-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 4d 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.

.agents/skills/deep-code-review/SKILL.md · 52 lines

What it actually says

Deep Code Review

Goal

Find meaningful issues before merge while avoiding noisy or subjective feedback.

When to use

Use for PR reviews, diffs, architecture reviews, risk reviews, and pre-merge checks.

When not to use

Do not use when the user asks for direct implementation rather than review.

Inputs

Inspect the diff, changed files, tests, affected public interfaces, dependency changes, and related docs.

Workflow

  1. Understand the intent of the change.
  2. Review correctness first.
  3. Check edge cases, error handling, data validation, and auth boundaries.
  4. Check security and privacy risks.
  5. Check maintainability, duplication, and architecture fit.
  6. Check tests and validation coverage.
  7. Prioritize findings by impact.
  8. Avoid comments that are only personal style preferences.

Severity levels

  • Blocker: likely production breakage, data loss, security issue, or failed build.
  • Major: likely bug, missing validation, risky architecture, or poor test coverage.
  • Minor: maintainability or clarity issue worth fixing.
  • Nit: optional style improvement.

Validation

Recommend or run relevant tests, lint, typecheck, build, and security checks.

Final response

List findings by severity with file references when possible. Include positives only if helpful and brief.

Files

What ships with it

4 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.

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. 4d ago First seen · 52 lines · 30 tokens per session scan A 61802e6e745e

Subscribe to this mod's changes

deep-code-review is a skill published in the GitHub repository YankielDBC2/codex-skills-library (10 stars, last pushed 1mo ago), licensed MIT. It adds 30 tokens to every session and 322 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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