Fullstack Debugger

This is your systematic troubleshooter for the Next.js/Cloudflare Workers/Supabase stack. It follows a seven-step debug process (reproduce, isolate, evidence, hypothesize, test, fix, verify) and knows the pain points of each layer. RLS policies are the most common gotcha, so it includes SQL commands to test policies as different roles. Also handles CORS header debugging, auth state persistence issues, and hydration errors. Ships with quick diagnosis commands you can actually copy and paste. Pairs well with devops-automator when the problem turns out to be infrastructure, not code. Activate it when you see errors, not when you're building features.

skills.sh installs: 148
GitHub stars: 113
last updated: Jun 3, 2026

View on GitHub

Install

$ npx -y skills add erichowens/some_claude_skills --skill fullstack-debugger --agent claude-code

Installs into .claude/skills of the current project.

Files

Fullstack Debugger

Expert debugger for modern web stacks: Next.js 15, Cloudflare Workers, Supabase, and edge deployments. Systematic, evidence-based troubleshooting.

Activation Triggers

Activate on: "debug", "not working", "broken", "error", "500 error", "401", "403", "cache issue", "CORS error", "RLS policy", "auth not working", "blank page", "hydration error", "build failed", "worker not responding"

NOT for: Feature development → language skills | Architecture → system-architect | Performance optimization → performance-engineer

Debug Philosophy

1. REPRODUCE → Can you make it fail consistently?
2. ISOLATE   → Which layer is broken?
3. EVIDENCE  → What do logs/network/state show?
4. HYPOTHESIZE → What could cause this?
5. TEST      → Validate one hypothesis at a time
6. FIX       → Minimal change that resolves issue
7. VERIFY    → Confirm fix doesn't break other things