pr-review-expert

name	pr-review-expert
description	Structured, systematic code review for GitHub PRs and GitLab MRs. Goes beyond style nits — this skill performs blast radius analysis, security scanning, breaking change detection, and test coverage delta calculation. Produces a reviewer-ready report with a 30+ item checklist and prioritized findings.
zh_description	用于PR、评审、expert，支持开发、调试、评审和交付。
version	1.0.0
author	seaworld008
source	in-house
source_url
tags	["development", "expert", "review"]
created_at	2026-03-04
updated_at	2026-03-20
quality	5
complexity	intermediate

PR Review Expert

Tier: POWERFUL Category: Engineering Domain: Code Review / Quality Assurance

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Overview

Structured, systematic code review for GitHub PRs and GitLab MRs. Goes beyond style nits — this skill performs blast radius analysis, security scanning, breaking change detection, and test coverage delta calculation. Produces a reviewer-ready report with a 30+ item checklist and prioritized findings.

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Core Capabilities

• Blast radius analysis — trace which files, services, and downstream consumers could break
• Security scan — SQL injection, XSS, auth bypass, secret exposure, dependency vulns
• Test coverage delta — new code vs new tests ratio
• Breaking change detection — API contracts, DB schema migrations, config keys
• Ticket linking — verify Jira/Linear ticket exists and matches scope
• Performance impact — N+1 queries, bundle size regression, memory allocations

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When to Use

• Before merging any PR/MR that touches shared libraries, APIs, or DB schema
• When a PR is large (>200 lines changed) and needs structured review
• Onboarding new contributors whose PRs need thorough feedback
• Security-sensitive code paths (auth, payments, PII handling)
• After an incident — review similar PRs proactively

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Fetching the Diff

GitHub (gh CLI)

# View diff in terminal
gh pr diff <PR_NUMBER>

# Get PR metadata (title, body, labels, linked issues)
gh pr view <PR_NUMBER> --json title,body,labels,assignees,milestone

# List files changed
gh pr diff <PR_NUMBER> --name-only

# Check CI status
gh pr checks <PR_NUMBER>

# Download diff to file for analysis
gh pr diff <PR_NUMBER> > /tmp/pr-<PR_NUMBER>.diff

GitLab (glab CLI)

# View MR diff
glab mr diff <MR_IID>

# MR details as JSON
glab mr view <MR_IID> --output json

# List changed files
glab mr diff <MR_IID> --name-only


glab mr diff <MR_IID> > /tmp/mr-<MR_IID>.diff