mergerep

Check a GitHub contributor’s open source merge rate before reviewing their PR. Helps identify low-quality LLM-generated pull requests.

How It Works

1. Fetches all public PRs (and optionally issues) by the user via GitHub GraphQL API
2. Excludes the user’s own repos — only external contributions count
3. Calculates a reputation score: % of merged PR stars out of total PR stars (star-weighted merge rate)
4. Breaks down stats per repository

Prerequisites

Requires GitHub CLI (gh) authenticated.

Usage

# Check a specific user
bunx mergerep <username>

# Auto-detect PR author (when run inside a PR branch)
bunx mergerep

# JSON output (for programmatic use)
bunx mergerep <username> --json

# Include issue stats
bunx mergerep <username> --issues

# Highlight a specific repo in output
bunx mergerep <username> --repo owner/name

When to Use

• Reviewing a PR from an external contributor — run bunx mergerep <author> to check their track record
• Triaging incoming PRs — quickly assess if a contributor has a history of merged contributions
• Comparing contributors — use --json to programmatically compare multiple users

Output

The tool outputs:

• Reputation: star-weighted merge rate (green ≥70%, yellow ≥40%, red <40%)
• Pull Requests: total merged/opened with per-repo breakdown
• Issues (with --issues): total closed/opened with per-repo breakdown

Present Results to User

When presenting mergerep output, summarize:

• The user’s reputation score and what it indicates
• Their overall merge rate
• Notable repos they’ve contributed to
• Whether this suggests the contributor is trustworthy for the current PR