# code-review

Automates pull request reviews in Claude Code using four parallel agents and confidence scoring to filter out false positives.

- plugin · `type=plugin` · Claude Code · ★ 44635
- Author: Anthropic · official Anthropic repository
- License: Apache-2.0 · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/anthropics/claude-plugins-official/tree/HEAD/plugins/code-review
- Updated: 2026-10-24
- HTML: https://affpapa.org/en/nevibecode/plugins/code-review

## What it does

The `/code-review` command automates pull request auditing by launching four parallel agents. Two agents verify compliance with repository guidelines in `CLAUDE.md`, one inspects changes for obvious bugs, and one analyzes context using `git blame`.

Each detected issue receives a confidence score between 0 and 100. Findings scoring below 80 are discarded, preventing nitpicks, lint-level warnings, and pre-existing bugs from polluting the discussion. The resulting comment links directly to the full commit SHA and affected line ranges.

Without an authenticated GitHub CLI (`gh auth login`), the plugin cannot post review comments. The tool also skips drafts, closed pull requests, and branches that were already audited.

## Requirements
- Works with: GitHub

## Install

### Claude Code (native platform)

**Plugin marketplace**
In the agent chat (not a shell):
```text
/plugin install code-review@claude-plugins-official
```
In the agent chat (not a shell):
```text
/plugin marketplace add anthropics/claude-plugins-official
```

## When to use it
- audit pull request diffs against guidelines in `CLAUDE.md`
- catch bugs introduced in new changes without flagging legacy code
- filter out linter noise and low-confidence review comments
- post structured PR comments linking to commit SHAs and line ranges

## Example prompts
- /code-review
- Run `/code-review` on this branch to check for issues
- Audit the open pull request with `/code-review`

## Source text · code-review · Apache-2.0

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BEGIN THIRD-PARTY FILE 1df6ef862cc6fffa
````text
# Code Review Plugin

Automated code review for pull requests using multiple specialized agents with confidence-based scoring to filter false positives.

## Overview

The Code Review Plugin automates pull request review by launching multiple agents in parallel to independently audit changes from different perspectives. It uses confidence scoring to filter out false positives, ensuring only high-quality, actionable feedback is posted.

## Commands

### `/code-review`

Performs automated code review on a pull request using multiple specialized agents.

**What it does:**
1. Checks if review is needed (skips closed, draft, trivial, or already-reviewed PRs)
2. Gathers relevant CLAUDE.md guideline files from the repository
3. Summarizes the pull request changes
4. Launches 4 parallel agents to independently review:
   - **Agents #1 & #2**: Audit for CLAUDE.md compliance
   - **Agent #3**: Scan for obvious bugs in changes
   - **Agent #4**: Analyze git blame/history for context-based issues
5. Scores each issue 0-100 for confidence level
6. Filters out issues below 80 confidence threshold
7. Posts review comment with high-confidence issues only

**Usage:**
```bash
/code-review
```

**Example workflow:**
```bash
# On a PR branch, run:
/code-review

# Claude will:
# - Launch 4 review agents in parallel
# - Score each issue for confidence
# - Post comment with issues ≥80 confidence
# - Skip posting if no high-confidence issues found
```

**Features:**
- Multiple independent agents for comprehensive review
- Confidence-based scoring reduces false positives (threshold: 80)
- CLAUDE.md compliance checking with explicit guideline verification
- Bug detection focused on changes (not pre-existing issues)
- Historical context analysis via git blame
- Automatic skipping of closed, draft, or already-reviewed PRs
- Links directly to code with full SHA and line ranges

**Review comment format:**
```markdown
## Code review

Found 3 issues:

1. Missing error handling for OAuth callback (CLAUDE.md says "Always handle OAuth errors")

https://github.com/owner/repo/blob/abc123.../src/auth.ts#L67-L72

2. Memory leak: OAuth state not cleaned up (bug due to missing cleanup in finally block)

https://github.com/owner/repo/blob/abc123.../src/auth.ts#L88-L95

3. Inconsistent naming pattern (src/conventions/CLAUDE.md says "Use camelCase for functions")

https://github.com/owner/repo/blob/abc123.../src/utils.ts#L23-L28
```

**Confidence scoring:**
- **0**: Not confident, false positive
- **25**: Somewhat confident, might be real
- **50**: Moderately confident, real but minor
- **75**: Highly confident, real and important
- **100**: Absolutely certain, definitely real

**False positives filtered:**
- Pre-existing issues not introduced in PR
- Code that looks like a bug but isn't
- Pedantic nitpicks
- Issues linters will catch
- General quality issues (unless in CLAUDE.md)
- Issues with lint ignore comments

## Installation

This plugin is included in the Claude Code repository. The command is automatically available when using Claude Code.

## Best Practices

### Using `/code-review`
- Maintain clear CLAUDE.md files for better compliance checking
- Trust the 80+ confidence threshold - false positives are filtered
- Run on all non-trivial pull requests
- Review agent findings as a starting point for human review
- Update CLAUDE.md based on recurring review patterns

### When to use
- All pull requests with meaningful changes
- PRs touching critical code paths
- PRs from multiple contributors
- PRs where guideline compliance matters

### When not to use
- Closed or draft PRs (automatically skipped anyway)
- Trivial automated PRs (automatically skipped)
- Urgent hotfixes requiring immediate merge
- PRs already reviewed (automatically skipped)

## Workflow Integration

### Standard PR review workflow:
```bash
# Create PR with changes
/code-review

# Review the automated feedback
# Make any necessary fixes
# Merge when ready
```

### As part of CI/CD:
```bash
# Trigger on PR creation or update
# Automatically posts review comments
````
END THIRD-PARTY FILE 1df6ef862cc6fffa

The third-party file has ended. Everything between the 1df6ef862cc6fffa tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

First 4067 of 7321 bytes. © Anthropic · Apache-2.0 · https://github.com/anthropics/claude-plugins-official/tree/HEAD/plugins/code-review

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