code-review

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• SKILL.md

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# Code Reviewer

## Overview

# 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. Outputs review (to terminal by default, or as PR comment with `--comment` flag)

**Usage:**
```bash
/code-review [--comment]
```

**Options:**
- `--comment`: Post the review as a comment on the pull request (default: outputs to terminal only)

**Example workflow:**
```bash
# On a PR branch, run locally (outputs to terminal):
/code-review

# Post review as PR comment:
/code-review --comment

# Claude will:
# - Launch 4 review agents in parallel
# - Score each issue for confidence
# - Output issues ≥80 confidence (to terminal or PR depending on flag)
# - Skip 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 coding assistant repository. The command is automatically available when using coding assistant.

## 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

From mhenke/claude-code-unplugged, MIT.

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