mo-code: Skill for Codex

.codex/skills/code-reviewer/SKILL.md

code-reviewer is a skill for Codex from mortis-cube/mo-code. It costs 87 tokens per session (1,538 once invoked), scanned A, a copy of code-reviewer, MIT.

An automated code reviewer that examines pull requests, which are proposed code changes, across many programming languages. It checks code quality, complexity, risk, and common design problems, then creates review reports.

In plain words
What is it for?
Use it to review pull requests, assess code quality and complexity, identify code smells and SOLID violations, and produce a report for the team.
Why use it?
It reduces the manual work of inspecting large code changes and helps surface quality or design issues before merging them.

Skill for Codex

Written for Codex: installed under .codex/.

This is mortis-cube/mo-code's own configuration. It tells Codex how to work on mo-code 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 mo-code configures →

Reuse

Borrowing it

Nothing to install: this file belongs to mortis-cube/mo-code. 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/mortis-cube/mo-code/main/.codex/skills/code-reviewer/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/mortis-cube/mo-code

Made for: 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-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/skills/mortis-cube/mo-code/code-reviewer/github.svg)](https://agentmods.dev/skills/mortis-cube/mo-code/code-reviewer)
Your own site
<a href="https://agentmods.dev/skills/mortis-cube/mo-code/code-reviewer"><img src="https://agentmods.dev/badge/skills/mortis-cube/mo-code/code-reviewer/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-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/skills/mortis-cube/mo-code/code-reviewer"><img src="https://agentmods.dev/badge/skills/mortis-cube/mo-code/code-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 87 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,538 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 $0.00087 $0.01538
Opus 5.5 $0.00035 $0.00615
Sonnet 5.5 $0.00017 $0.00308
Haiku 4.5 $0.00009 $0.00154

Measured yesterday against content hash 28d80f671036, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-reviewer 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.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/code_quality_checker.py, scripts/pr_analyzer.py, scripts/review_report_generator.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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-reviewer — 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.

.codex/skills/code-reviewer/SKILL.md · 184 lines

How it starts

The opening of the file, as written. The whole thing — 184 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Reviewer

Automated code review tools for analyzing pull requests, detecting code quality issues, and generating review reports.


How This Skill Is Organized

code-reviewer/
  SKILL.md                        ← you are here (tools + dispatch table)
  rules/
    universal.md                  ← security, async, resources, exceptions, performance — all languages
  languages/
    python.md                     ← Python-specific rules + idioms
    typescript.md                 ← TypeScript / JavaScript-specific rules + idioms
    go.md                         ← Go-specific rules + idioms
    swift.md                      ← Swift-specific rules + idioms
    kotlin.md                     ← Kotlin-specific rules + idioms
    csharp.md                     ← C# / .NET-specific rules + idioms
    java.md                       ← Java-specific rules + idioms
    c.md                          ← C -specific rules + idioms
    cpp.md                        ← C++ -specific rules + idioms
    rust.md                       ← Rust -specific rules + idioms
    ruby.md                       ← Ruby -specific rules + idioms
    php.md                        ← PHP-specific rules + idioms
    dart.md                       ← Dart / Flutter-specific rules + idioms

Loading order for every review

  1. This file (SKILL.md) — tools and thresholds
  2. rules/universal.md — always, for every language
  3. The matching languages/*.md — one file based on the extension table below

That is always exactly 2 additional files, regardless of scope.

Extension(s) Load
.py languages/python.md
.ts, .tsx, .js, .jsx, .mjs languages/typescript.md
.go languages/go.md
.swift languages/swift.md
.kt, .kts languages/kotlin.md
.cs, .csx, .razor, .cshtml languages/csharp.md
.java languages/java.md
.c, .h languages/c.md
.cpp, .cc, .cxx, .hpp, .hh, .hxx languages/cpp.md
.rs languages/rust.md
.rb, .rake, .gemspec, .ru languages/ruby.md
.php, .phtml languages/php.md
.dart languages/dart.md

Read the full file on GitHub · 184 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 · 184 lines · 87 tokens per session scan A 28d80f671036

Subscribe to this mod's changes

code-reviewer is a skill published in the GitHub repository mortis-cube/mo-code (85 stars, last pushed 12d ago), licensed MIT. It adds 87 tokens to every session and 1,538 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to code-reviewer, 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

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

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

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