code-review-action: Skill for Claude Code

.agents/skills/code-simplify/SKILL.md

code-simplify is a skill for Claude Code, Codex from julien777z/code-review-action. It costs 55 tokens per session (3,636 once invoked), scanned A, a copy of code-simplify, MIT.

A strict code-review helper that examines branch changes for simpler structure, reusable code, and easier maintenance, then applies behavior-preserving fixes.

In plain words
What is it for?
Use it to review and improve a branch’s implementation quality while keeping its existing behavior and external contracts.
Why use it?
It helps remove unnecessary layers, repeated logic, oversized files, and growing webs of conditions before they make the code harder to change.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents; installed under .agents/ (shared by several agents).

This is julien777z/code-review-action's own configuration. It tells Claude Code and Codex how to work on code-review-action itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything code-review-action configures →

Reuse

Borrowing it

Nothing to install: this file belongs to julien777z/code-review-action. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/julien777z/code-review-action/main/.agents/skills/code-simplify/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/julien777z/code-review-action

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 code-simplify

README.md
[![agentmods](https://agentmods.dev/badge/skills/julien777z/code-review-action/code-simplify/github.svg)](https://agentmods.dev/skills/julien777z/code-review-action/code-simplify)
Your own site
<a href="https://agentmods.dev/skills/julien777z/code-review-action/code-simplify"><img src="https://agentmods.dev/badge/skills/julien777z/code-review-action/code-simplify/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for code-simplify

Your own site · 80×15
<a href="https://agentmods.dev/skills/julien777z/code-review-action/code-simplify"><img src="https://agentmods.dev/badge/skills/julien777z/code-review-action/code-simplify.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,636 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod 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 5.1 $0.00055 $0.03636
Opus 5.5 $0.00022 $0.01454
Sonnet 5.5 $0.00011 $0.00727
Haiku 4.5 $0.00006 $0.00364

Measured 2mo ago against content hash 997409fc937b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-simplify 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 2mo 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.

Origin

This is a copy

100% identical to code-simplify — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.agents/skills/code-simplify/SKILL.md · 218 lines

How it starts

The opening of the file, as written. The whole thing — 218 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Simplify

Use this skill for an unusually strict review focused on implementation quality, maintainability, abstraction quality, and codebase health.

Above all, this skill should push the reviewer to be ambitious about code structure. Do not merely identify local cleanup opportunities. Actively search for "code judo" moves: restructurings that preserve behavior while making the implementation dramatically simpler, smaller, more direct, and more elegant.

Applying fixes

This skill does not stop at review: apply the simplifications you identify directly to the working tree. Make every behavior-preserving change you would otherwise only recommend — restructure, extract, delete indirection, collapse branches, reuse the canonical helper — and keep those edits in the commit you are working on. Treat the review questions and approval bar below as the checklist for what to fix, not merely what to flag.

Preserve observable behavior and the external contracts tests can't see — including on the default pre-push pass. The pre-push pass runs automatically and cannot assume a full test run, so while simplifying do not change a contract that code or systems outside this diff depend on: public routes and their request/response shapes, durable identifiers (handler, event, queue, and state keys), persisted on-disk or on-the-wire formats (DB columns, migrations, serialized payloads), and cross-package shared DTOs or config keys. Do not introduce pass-through shims to fake an unchanged signature — adjust the real call sites instead. When a worthwhile simplification would alter one of these, leave a written note rather than applying it silently. A deliberate, test-verified broader-scope request may restructure internal code and in-repository API shapes when the suite proves behavior is preserved.

Running the pass

Review small scopes in process. A scope is small when one reviewer can hold the complete diff, every touched file, and the relevant siblings at once without losing context. Focused changes to one or a few files, especially documentation or configuration changes, normally qualify. Do not spawn subagents merely because the host exposes them, and do not add a cross-cutting reviewer for a small scope.

Read the full file on GitHub · 218 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. 2mo ago First seen · 218 lines · 55 tokens per session scan A 997409fc937b

Subscribe to this mod's changes

code-simplify is a skill published in the GitHub repository julien777z/code-review-action (2 stars, last pushed 28d ago), licensed MIT. It adds 55 tokens to every session and 3,636 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to code-simplify, differing in 0 lines, and is treated as a copy.

Related

Other skills, from other repositories

autoreview

Structured code review through the shared OpenClaw agent-skills installation.

openclaw/clawhub · 17 tokens

omh-code-review

This is an OMH code-review workflow skill, projected for Agent Skills hosts (Claude Code, Codex, Cursor, opencode, OpenClaw, pi).

rlaope/oh-my-hermes · 48 tokens

revdiff-plan

Review the last Codex assistant message (plan, analysis, or proposal) with inline annotations in a TUI overlay. Extracts the most recent response from Codex rollout files and opens it in revdiff for review and annotation. Activates on "revdiff-plan", "review plan with revdiff", "annotate plan", "review last response"…

umputun/revdiff · 84 tokens

explore-unknowns

Guide the user through a quadrant walk that maps the unknowns of a task — open by listing the known knowns, then work through known unknowns, unknown knowns, and unknown unknowns one stage at a time, ending with a complete four-quadrant map in the user's hands. Use when a request is ambiguous or underspecified, the…

dzhng/skills · 162 tokens

re0-merge

Review and land an external contribution the way this suite does: gate it against the thesis, land it with the author's credit intact, complete a new skill rather than merging it raw, then approve, credit, and explain before closing. Use when reviewing a pull request, as any collaborator or maintainer, not only the…

LilMGenius/paperthin · 70 tokens

asplos-writing-style

Use when drafting or revising ASPLOS prose — engineering the first two pages that rapid review actually reads, stating the cross-layer insight as one quotable sentence, structuring per-layer mechanism sections, writing bounded claims, and fitting everything into 11 self-contained pages that include figures and…

brycewang-stanford/Awesome-Journal-Skills · 65 tokens