Agent skill

Review Code

by ankitvgupta in ankitvgupta/exo

Pre-commit code review for production-critical issues. An agent skill from ankitvgupta/exo.

Custom licenceAuto-check: notesDevelopment

Install Review Code

skills CLI
$ npx skills add ankitvgupta/exo --skill review-code -a claude-code

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

GitHub CLI
$ gh skill install ankitvgupta/exo review-code --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/ankitvgupta/exo.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/review-code .claude/skills/review-code && 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
review-code
GitHub stars
496
Token cost
~5.8k tokens
SKILL.md length
2,480 words
Files
3
Skills in repo
6
Repo updated
First seen
Licence
Custom licence

At a glance

Pre-commit code review for production-critical issues. An agent skill from ankitvgupta/exo.

  • Works in 8 steps: Gather Context → Read Full File Context → Run 14 Parallel Review Agents → …
  • Reviewing staged changes
  • SKILL.md covers Scope and Process
  • Calls git and npx; needs API_KEY

What it does

Review Code is an agent skill from ankitvgupta/exo. Pre-commit code review for production-critical issues. Use when reviewing staged changes, before committing, or when asked to review code for bugs and consistency issues.

Its SKILL.md is about 5.8k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `project-specific.md` and `review-patterns.md`).

It sits in Development, covering Code review. It works with Git. The repository describes itself as: Claude Code for your Inbox.

When your agent uses it

  • Reviewing staged changes
  • Before committing
  • Asked to review code for bugs and consistency issues

Example prompts

  • “/review-code”

Requirements

  • Node.js
  • Pre-approved tools (allowed-tools): Bash, Read, Glob, Grep, Edit, Task, LSP

Workflow steps

8 steps, taken from the step headings in SKILL.md.

  1. Gather Context
  2. Read Full File Context
  3. Run 14 Parallel Review Agents
  4. Cross-Agent Deduplication
  5. Systemic Pattern Detection
  6. Score and Filter
  7. Report
  8. Fix Issues

What it can do on your machine

Read from SKILL.md and the folder at commit 04da760. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Bash
    • Read
    • Glob
    • Grep
    • Edit
    • Task
    • LSP

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • git
    • npx

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

  • Network

    No URLs in SKILL.md. Its commands use git and npx, which can reach the network depending on how they are called.

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

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • API_KEY

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

Context cost

Review Code loads about 5.8k tokens when it runs. Until then it costs about 46 tokens; SKILL.md has 2,480 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~46
When it runs · the whole SKILL.md, loaded when a task matches
~5.8k

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: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Bash, Read, Glob, Grep, Edit, Task, LSP

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 2,480 words (~5,751 tokens).

“Review staged changes for production-critical issues before committing. This catches the kinds of bugs that CI review bots find — type safety violations, IPC contract mismatches, missing references, and frontend/backend inconsistencies. Uses 14 parallel review agents for comprehensive coverage.”

— opening of SKILL.md by ankitvgupta, Custom licence
name
review-code
allowed-tools
Bash, Read, Glob, Grep, Edit, Task, LSP
argument-hint
[base-branch]

Read the full SKILL.md on GitHub

Files

SKILL.md and 2 other files in .claude/skills/review-code of ankitvgupta/exo.

  • SKILL.md
  • project-specific.md
  • review-patterns.md

Open the folder on GitHubat commit 04da760

Compare with similar skills

Review Code 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.

Review Code compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Review Code this skillankitvgupta/exo496—~5.8kAutomated safety check: NotesCustom licence
Code Review ChecklistshareAI-lab/learn-claude-code78k5 repos~1.1kAutomated 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
Hunk Diff Session Controlmodem-dev/hunk9.5k1 repos~3.4kAutomated safety check: PassMIT
Open Code Review Delegatealibaba/open-code-review44k—~2kAutomated safety check: PassApache-2.0

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  • Code Review Checklist

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  • Understand Diff Analysis

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  • Gh Local

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Works with

Categories

Questions about Review Code

What does Review Code do?

Pre-commit code review for production-critical issues. An agent skill from ankitvgupta/exo. Review Code is an agent skill from ankitvgupta/exo. Pre-commit code review for production-critical issues.

When should I use Review Code?

Review Code fits situations like: reviewing staged changes; before committing; asked to review code for bugs and consistency issues.

How do I install Review Code in Claude Code?

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

How do I install Review Code in Codex?

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

Can I use Review Code 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 ankitvgupta/exo --skill review-code -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/review-code, .gemini/skills/review-code, .github/skills/review-code and .opencode/skills/review-code in your project.

What does Review Code need to run?

Going by SKILL.md and its folder, Review Code needs the command-line tools its instructions call (git and npx) and credentials named API_KEY. Our summary lists: Node.js. Its frontmatter pre-approves these tools: Bash, Read, Glob, Grep, Edit, Task, LSP.

Does Review Code access the network?

SKILL.md contains no URLs. Its commands use git and npx, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Review Code safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Review Code use?

Review Code has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Review Code use?

About 5.8k tokens (SKILL.md is roughly 23k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Review Code?

Skills that share tags, products or a category with Review Code: Code Review Checklist (shareAI-lab/learn-claude-code, 78k stars), Understand Diff Analysis (Egonex-AI/Understand-Anything, 86k stars), Open Code Review CLI (alibaba/open-code-review, 44k stars) and Hunk Diff Session Control (modem-dev/hunk, 9.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Review Code?

ankitvgupta (a GitHub user) maintains it in ankitvgupta/exo, which has 496 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on September 5, 2026.

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