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Agent skill

Code Review

by stevesolun in stevesolun/ctx

Review a Git diff against repository standards and its originating requirements.

MITAuto-check passedDevelopment

Install Code Review

skills CLI
$ npx skills add stevesolun/ctx --skill code-review -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install stevesolun/ctx code-review --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/stevesolun/ctx.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/code-review .claude/skills/code-review && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
code-review
GitHub stars
588
Token cost
~466 tokens
SKILL.md length
227 words
Files
3 (incl. references)
Skills in repo
26
Repo updated
First seen
Licence
MIT

At a glance

Review a Git diff against repository standards and its originating requirements.

  • Work-in-progress changes
  • SKILL.md covers Establish scope, Collect references, Evaluate two axes and Report
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Changes since a commit

What it does

Code Review is an agent skill from stevesolun/ctx. Review a Git diff against repository standards and its originating requirements. Use for pull requests, branches, work-in-progress changes, or changes since a commit, tag, or merge-base.

Its SKILL.md is about 470 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `agents/openai.yaml` and `references/review-heuristics.md`).

It sits in Development, covering Code review and Pull requests. It works with Git. The repository describes itself as: CTX Fit finds the cheapest AI coding setup that reliably works on your repository, then applies the winner as a reviewable change. The licence is MIT.

When your agent uses it

  • Work-in-progress changes
  • Changes since a commit

Example prompts

  • “/code-review”

What it can do on your machine

Read from SKILL.md and the folder at commit 11b582a. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Code Review loads about 466 tokens when it runs, and up to ~935 if it reads all its reference files. Until then it costs about 50 tokens; SKILL.md has 227 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~50
When it runs · the whole SKILL.md, loaded when a task matches
~466
With references · SKILL.md plus every file in references/, read only if the agent opens them
~935

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from stevesolun/ctx at commit 11b582a, republished under its MIT licence (© stevesolun). 227 words, ~466 tokens.

Download SKILL.mdSave it as .claude/skills/code-review/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
code-review
description
Review a Git diff against repository standards and its originating requirements. Use for pull requests, branches, work-in-progress changes, or changes since a commit, tag, or merge-base.

Review code changes

Establish scope

Honor a fixed point supplied by the user. Otherwise infer a sensible comparison from the repository state, such as the default-branch merge-base. Ask only when different choices would materially change the review.

Verify that the ref resolves and inspect the diff and relevant commit messages. Report an empty or unavailable comparison instead of manufacturing findings.

Collect references

Use the repository's actual standards and the originating issue, PRD, or spec when available. Follow repository conventions for fetching tracker context. If requirements cannot be found, review the standards axis and state that spec conformance was not verified.

Evaluate two axes

  • Standards: Does the change follow documented repository conventions and avoid material design regressions?
  • Spec: Does it implement the requested behavior without omissions, incorrect behavior, or unrelated scope?

Use deterministic checks for properties tooling can decide. For qualitative review, load review heuristics only when the diff warrants deeper design analysis.

The axes are independent and may be evaluated concurrently when the diff is large enough to benefit. Keep a small review local, and avoid parallel work when coordination would cost more than it saves.

Report

Lead with actionable findings, citing the affected file and evidence. Separate documented violations from judgment calls and keep Standards and Spec findings distinct so one axis cannot mask the other. State unavailable evidence and report when no material findings remain.

© stevesolun, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 2 other files (references) in .agents/skills/code-review of stevesolun/ctx.

  • SKILL.md
  • agents/openai.yaml
  • references/review-heuristics.md

Open the folder on GitHubat commit 11b582a

Compare with similar skills

Code Review next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Code Review compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Code Review this skillstevesolun/ctx588—~466Automated safety check: PassMIT
Understand Diff AnalysisEgonex-AI/Understand-Anything86k1 repos~1.4kAutomated safety check: PassMIT
Open Code Review CLIalibaba/open-code-review44k—~3.1kAutomated safety check: PassApache-2.0
Code Reviewflutter/flutter179k—~1.4kAutomated safety check: PassBSD-3-Clause
PR Review State Fetchprisma/orm48k—~767Automated safety check: PassApache-2.0
Knowledge Graph PR Reviewtirth8205/code-review-graph32k—~452Automated safety check: PassMIT

Similar skills

  • Understand Diff Analysis

    Egonex-AI/Understand-Anything

    Reads your git changes or a pull request against a prebuilt knowledge graph of the project to explain what changed, which components are affected and what is risky.

    86k GitHub starsUsed in 1 repo~1.4k tokens
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  • Open Code Review CLI

    alibaba/open-code-review

    Runs the ocr command-line tool to review Git changes, a commit or a branch comparison with an AI model, returning line-level comments and optionally applying fixes.

    44k GitHub stars~3.1k tokensUpdated 3 days ago
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  • Code Review

    flutter/flutter

    Performs a comprehensive, multi-step code review of pull requests or local code changes, using iterative refinement (generation, critique, synthesis) to ensure high-quality, actionable feedback.

    179k GitHub stars~1.4k tokensUpdated today
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  • PR Review State Fetch

    prisma/orm

    Official

    Fetches a pull request's canonical review state as JSON, validates it, and renders markdown, a text summary and triage target files from it using bundled scripts.

    48k GitHub stars~767 tokensUpdated today
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  • Knowledge Graph PR Review

    tirth8205/code-review-graph

    Reviews a pull request or branch diff with a code knowledge graph and produces a structured review that includes blast-radius analysis.

    32k GitHub stars~452 tokensUpdated yesterday
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  • Review Triage Phase

    prisma/orm

    Official

    Runs the triage step of the review-framework loop: reads fetched PR review state, builds `review-actions.json`, validates it and renders `review-actions.md`.

    48k GitHub stars~995 tokensUpdated today
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More from stevesolun/ctx

All 26 skills in this repo

  • Diagnosing Bugs

    stevesolun/ctx

    Diagnose hard bugs and performance regressions with reproducible evidence, focused hypotheses, and proportional instrumentation.

    588 GitHub stars~596 tokensUpdated 4 days ago
    Auto-check passed

  • Repo Stats Autoupdate

    stevesolun/ctx

    Keeps README badge + inline counts in sync with the real number of skills, agents, graph nodes/edges, communities, converted pipelines, and test inventory.

    588 GitHub stars~724 tokensUpdated 4 days ago
    Auto-check passed

  • No Mistakes

    stevesolun/ctx

    Validate committed feature-branch changes through the no-mistakes pipeline: intent, rebase, review, test, docs, lint, push, PR, and CI.

    588 GitHub stars~458 tokensUpdated 4 days ago
    Auto-check passed

  • Skill Router

    stevesolun/ctx

    Repo-aware recommendation manager for ctx. An agent skill from stevesolun/ctx.

    588 GitHub stars~2.4k tokensUpdated 4 days ago
    Auto-check passed

  • Codebase Design

    stevesolun/ctx

    Design or improve module interfaces using deep-module heuristics.

    588 GitHub stars~662 tokensUpdated 4 days ago
    Auto-check passed

  • Lat Md Knowledge Graph

    stevesolun/ctx

    Design or audit a repo-local markdown knowledge graph with wiki links, source-code backlinks, drift checks, and searchable sections.

    588 GitHub stars~466 tokensUpdated 4 days ago
    Auto-check passed

Works with

Categories

Questions about Code Review

What does Code Review do?

Review a Git diff against repository standards and its originating requirements. Code Review is an agent skill from stevesolun/ctx. Review a Git diff against repository standards and its originating requirements.

When should I use Code Review?

Code Review fits situations like: work-in-progress changes; changes since a commit.

How do I install Code Review in Claude Code?

Run `npx skills add stevesolun/ctx --skill code-review -a claude-code`. Or copy the skill folder (.agents/skills/code-review in stevesolun/ctx) into .claude/skills/code-review in your project. Claude Code loads it when a task matches its description.

How do I install Code Review in Codex?

Run `npx skills add stevesolun/ctx --skill code-review -a codex`. Or copy the skill folder (.agents/skills/code-review in stevesolun/ctx) into .agents/skills/code-review in your project. Codex loads it when a task matches its description.

Can I use Code Review in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add stevesolun/ctx --skill code-review -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-review, .gemini/skills/code-review, .github/skills/code-review and .opencode/skills/code-review in your project.

What does Code Review need to run?

SKILL.md names no scripts, command-line tools or credentials: Code Review is instructions for the agent only.

Does Code Review access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Code Review safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Code Review use?

Code Review is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Code Review use?

About 466 tokens (SKILL.md is roughly 1.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 469 tokens, read only when the agent opens those files.

What are the alternatives to Code Review?

Skills that share tags, products or a category with Code Review: Understand Diff Analysis (Egonex-AI/Understand-Anything, 86k stars), Open Code Review CLI (alibaba/open-code-review, 44k stars), Code Review (flutter/flutter, 179k stars) and PR Review State Fetch (prisma/orm, 48k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Code Review?

stevesolun (a GitHub user) maintains it in stevesolun/ctx, which has 588 GitHub stars. The repository holds 26 skills in this directory. The repository was last updated on October 4, 2026.

Source: stevesolun/ctx on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.