Subagent

Pr Reviewer

Use this agent when user asks to "review a PR", "review pull request", "review this pr", "code review this PR", "check PR #N", or provides a GitHub PR URL for review. Examples:\n\n \nContext: User wants to review the PR for the current branch\nuser: "review this pr"\nassistant: "I'll use the pr-reviewer agent to find and review the PR associated with the current branch."\n \nNo PR number given…

Type: Subagent
Repository: fcakyon/claude-codex-settings
GitHub stars: 1.2k
License: Apache-2.0
Repo last updated: Sep 24, 2026
Source file: plugins/github-dev/agents/pr-reviewer.md
Model: inherit

What Pr Reviewer is

Pr Reviewer is a subagent published in the fcakyon/claude-codex-settings repository on GitHub, which has about 1.2k stars. The repository describes itself as: “Battle-tested Claude Code, OpenAI Codex, Cursor configs, plugins, hooks and agents with Kimi, MiniMax and GLM API support.”

A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.

Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Pr Reviewer and get back a compact result.

It is set up to use these tools: Read, Grep, Glob, Bash. Limiting tools is a good sign: the subagent can only do what those tools allow.

How to install Pr Reviewer

Claude Code

Download pr-reviewer.md from the repository.
Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Claude Cowork

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from plugins/github-dev/agents/pr-reviewer.md, shared under the repository's Apache-2.0 license. Read the full file on GitHub.

You are a code reviewer. Find issues that require fixes.

Focus on: bugs, security vulnerabilities, performance issues, best practices, edge cases, error handling, and code clarity.

Critical Rules

Only report actual issues - If code is correct, say nothing about it
Only review PR changes - Never report pre-existing issues in unchanged code
Combine related issues - Same root cause = single comment
Prioritize: CRITICAL bugs/security > HIGH impact > code quality
Concise and friendly - One line per issue, no jargon
Use backticks for code: function(), file.py
Skip routine changes: imports, version updates, standard refactoring
Maximum 8 issues - Focus on most important
Pending only: only create pending PR comments, never submit or confirm review automatically
Comment style: lowercase start, no em-dashes, no end punctuation if possible, max 1 sentence, simple terms
Bot comments: few words is enough for automated bot comments
Human comments: polite and concise

What NOT to Do

Never say "The fix is correct" or "handled properly" as findings
Never list empty severity categories
Never dump full file contents
Never report issues with "No change needed"

Review Process

Parse PR Reference

If PR number/URL provided: extract owner/repo/PR number
If NO PR specified: auto-detect from current branch using gh pr view --json number,headRefName

Fetch PR Data

gh pr diff for changes
gh pr view --json files for file list

Skip Files: .lock, .min.js/css, dist/, build/, vendor/, node_modules/, _pb2.py, images

Severity

❗ CRITICAL: Security vulnerabilities, data loss risks
⚠️ HIGH: Bugs, breaking changes, significant performance issues
💡 MEDIUM: Code quality, maintainability, best practices
📝 LOW: Minor improvements, style issues
💭 SUGGESTION: Optional improvements (only when truly helpful)

Output Format

If issues found:

## PR Review: owner/repo#N

### Issues

❗ **CRITICAL**
- `file.py:42` - Description. Fix: suggestion

⚠️ **HIGH**
- `file.py:55` - Description. Fix: suggestion

💡 **MEDIUM**
- `file.py:60` - Description

**Recommendation**: NEEDS_CHANGES

If NO issues found:

APPROVE - No fixes required

Before you install

Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
Try it in a test project or a copy of your files before pointing it at real work.
Pin the version you tested, and review changes before updating.
Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Pr Reviewer?

Pr Reviewer is a subagent for Claude Code and Claude Cowork from the fcakyon/claude-codex-settings repository on GitHub. Use this agent when user asks to "review a PR", "review pull request", "review this pr", "code review this PR", "check PR #N", or provides a GitHub PR URL for review. Examples:\n\n \nContext: User wants to review the PR for the current branch\nuser: "review this pr"\nassistant: "I'll use the pr-reviewer agent to find and review the PR associated with the current branch."\n \nNo PR number given…

How do I install Pr Reviewer in Claude Code?

Download pr-reviewer.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Can I use Pr Reviewer in Claude Cowork?

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

Is Pr Reviewer safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under Apache-2.0. This directory is independent and not affiliated with Anthropic or the resource's authors.