Agent skill

Code Review

by julianromli in julianromli/opencode-template

Automated code review for pull requests using specialized review patterns.

Apache-2.0Auto-check passedDevelopment

Install Code Review

skills CLI

$ npx skills add julianromli/opencode-template --skill code-review -a claude-code

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

GitHub CLI

$ gh skill install julianromli/opencode-template 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/julianromli/opencode-template.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skill/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/

Paste into Claude Code

Install the "code-review" agent skill from https://github.com/julianromli/opencode-template/tree/main/skill/code-review into .claude/skills/code-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/julianromli/opencode-template/tree/main/skill/code-review

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add julianromli/opencode-template --skill code-review -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install julianromli/opencode-template code-review --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/julianromli/opencode-template.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skill/code-review .agents/skills/code-review && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "code-review" agent skill from https://github.com/julianromli/opencode-template/tree/main/skill/code-review into .agents/skills/code-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add julianromli/opencode-template --skill code-review -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install julianromli/opencode-template code-review --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/julianromli/opencode-template.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skill/code-review .cursor/skills/code-review && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "code-review" agent skill from https://github.com/julianromli/opencode-template/tree/main/skill/code-review into .cursor/skills/code-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/julianromli/opencode-template.git --path skill/code-review

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add julianromli/opencode-template --skill code-review -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install julianromli/opencode-template code-review --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/julianromli/opencode-template.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skill/code-review .gemini/skills/code-review && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "code-review" agent skill from https://github.com/julianromli/opencode-template/tree/main/skill/code-review into .gemini/skills/code-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install julianromli/opencode-template code-review

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add julianromli/opencode-template --skill code-review -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/julianromli/opencode-template.git skills-src && mkdir -p .github/skills && cp -r skills-src/skill/code-review .github/skills/code-review && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "code-review" agent skill from https://github.com/julianromli/opencode-template/tree/main/skill/code-review into .github/skills/code-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add julianromli/opencode-template --skill code-review -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install julianromli/opencode-template code-review --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/julianromli/opencode-template.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skill/code-review .opencode/skills/code-review && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "code-review" agent skill from https://github.com/julianromli/opencode-template/tree/main/skill/code-review into .opencode/skills/code-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-review", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: code-review
GitHub stars: 144
Token cost: ~682 tokens
SKILL.md length: 149 words
Files: 1
Skills in repo: 16
Repo updated: Feb 3, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Automated code review for pull requests using specialized review patterns.

Works in 4 steps: Security Review → Performance Review → Code Quality Review → …
Reviewing code changes
SKILL.md covers Review Categories, Review Output Format, Common Patterns to Flag and Review Checklist
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Code Review is an agent skill from julianromli/opencode-template. Automated code review for pull requests using specialized review patterns. Analyzes code for quality, security, performance, and best practices. Use when reviewing code changes, PRs, or doing code audits.

Its SKILL.md is about 680 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Code review and Pull requests. The repository describes itself as: OpenCode CLI Template by @faizntfd. The licence is Apache-2.0.

When your agent uses it

Reviewing code changes
Doing code audits

Example prompts

“/code-review”

Workflow steps

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

Security Review
Performance Review
Code Quality Review
Testing Review

What it can do on your machine

Read from SKILL.md and the folder at commit 37ceab2. 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 (its code samples are javascript and markdown).
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 682 tokens when it runs. Until then it costs about 54 tokens; SKILL.md has 149 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~54
When it runs · the whole SKILL.md, loaded when a task matches: ~682

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 julianromli/opencode-template at commit 37ceab2, republished under its Apache-2.0 licence (© julianromli). 149 words, ~682 tokens.

Download SKILL.mdSave it as .claude/skills/code-review/SKILL.md (or your agent's skills folder).

name: code-review
description: Automated code review for pull requests using specialized review patterns. Analyzes code for quality, security, performance, and best practices. Use when reviewing code changes, PRs, or doing code audits.
source: anthropics/claude-code
license: Apache-2.0

Code Review

Review Categories

1. Security Review

Check for:

SQL injection vulnerabilities
XSS (Cross-Site Scripting)
Command injection
Insecure deserialization
Hardcoded secrets/credentials
Improper authentication/authorization
Insecure direct object references

2. Performance Review

Check for:

N+1 queries
Missing database indexes
Unnecessary re-renders (React)
Memory leaks
Blocking operations in async code
Missing caching opportunities
Large bundle sizes

3. Code Quality Review

Check for:

Code duplication (DRY violations)
Functions doing too much (SRP violations)
Deep nesting / complex conditionals
Magic numbers/strings
Poor naming
Missing error handling
Incomplete type coverage

4. Testing Review

Check for:

Missing test coverage for new code
Tests that don't test behavior
Flaky test patterns
Missing edge cases
Mocked external dependencies

Review Output Format

markdown

## Code Review Summary

### 🔴 Critical (Must Fix)
- **[File:Line]** [Issue description]
  - **Why:** [Explanation]
  - **Fix:** [Suggested fix]

### 🟡 Suggestions (Should Consider)
- **[File:Line]** [Issue description]
  - **Why:** [Explanation]
  - **Fix:** [Suggested fix]

### 🟢 Nits (Optional)
- **[File:Line]** [Minor suggestion]

### ✅ What's Good
- [Positive feedback on good patterns]

Common Patterns to Flag

Security

javascript

// BAD: SQL injection
const query = `SELECT * FROM users WHERE id = ${userId}`;

// GOOD: Parameterized query
const query = 'SELECT * FROM users WHERE id = $1';
await db.query(query, [userId]);

Performance

javascript

// BAD: N+1 query
users.forEach(async user => {
  const posts = await getPosts(user.id);
});

// GOOD: Batch query
const userIds = users.map(u => u.id);
const posts = await getPostsForUsers(userIds);

Error Handling

javascript

// BAD: Swallowing errors
try {
  await riskyOperation();
} catch (e) {}

// GOOD: Handle or propagate
try {
  await riskyOperation();
} catch (e) {
  logger.error('Operation failed', { error: e });
  throw new AppError('Operation failed', { cause: e });
}

Review Checklist

No hardcoded secrets
Input validation present
Error handling complete
Types/interfaces defined
Tests added for new code
No obvious performance issues
Code is readable and documented
Breaking changes documented

Files

Just SKILL.md in skill/code-review of julianromli/opencode-template.

Open the folder on GitHubat commit 37ceab2

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
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Code Review this skilljulianromli/opencode-template	144	—	~682	Automated safety check: Pass	Apache-2.0	8 mo ago
PR Babysitteropeninterpreter/openinterpreter	69k	3 repos	~4.2k	Automated safety check: Pass	Apache-2.0	yesterday
Understand Diff AnalysisEgonex-AI/Understand-Anything	86k	1 repos	~1.4k	Automated safety check: Pass	MIT	2 days ago
WooCommerce Code Reviewwoocommerce/woocommerce	11k	3 repos	~1.1k	Automated safety check: Pass	Custom licence	today
Open Code Review CLIalibaba/open-code-review	44k	—	~3.1k	Automated safety check: Pass	Apache-2.0	3 days ago
GitHub Review Iterationprisma/orm	48k	—	~2.2k	Automated safety check: Pass	Apache-2.0	today

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Questions about Code Review

What does Code Review do?

Automated code review for pull requests using specialized review patterns. Code Review is an agent skill from julianromli/opencode-template. Automated code review for pull requests using specialized review patterns.

When should I use Code Review?

Code Review fits situations like: reviewing code changes; doing code audits.

How do I install Code Review in Claude Code?

Run `npx skills add julianromli/opencode-template --skill code-review -a claude-code`. Or copy the skill folder (skill/code-review in julianromli/opencode-template) 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 julianromli/opencode-template --skill code-review -a codex`. Or copy the skill folder (skill/code-review in julianromli/opencode-template) 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 julianromli/opencode-template --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 Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Code Review use?

About 682 tokens (SKILL.md is roughly 2.7k 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 Code Review?

Skills that share tags, products or a category with Code Review: PR Babysitter (openinterpreter/openinterpreter, 69k stars), Understand Diff Analysis (Egonex-AI/Understand-Anything, 86k stars), WooCommerce Code Review (woocommerce/woocommerce, 11k stars) and Open Code Review CLI (alibaba/open-code-review, 44k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Code Review?

julianromli (a GitHub user) maintains it in julianromli/opencode-template, which has 144 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on February 3, 2026.

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

Install Code Review

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Code Review

Review Categories

1. Security Review

2. Performance Review

3. Code Quality Review

4. Testing Review

Review Output Format

Common Patterns to Flag

Security

Performance

Error Handling

Review Checklist

Files

Compare with similar skills

Similar skills

More from julianromli/opencode-template

Related

Questions about Code Review