alexander-kastil/nextjs-supabase-auth
skills/nextjs-supabase-auth/SKILL.md
Expert integration of Supabase Auth with Next.js App Router Use when: supabase auth next, authentication next.js, login supabase, auth middleware, protected route.
tools
Updated Apr 2, 2026
$ install --global
skillsauthnpx skillsauth add alexander-kastil/skills-collection nextjs-supabase-authInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
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9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
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Socket.devSupply chain security analysis
50%
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VirusTotalMulti-engine malware detection
50%
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CrowdStrikeAdvanced threat intelligence
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OSV-ScannerOpen Source Vulnerability database check
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OWASP Dep-Check
50%
Last scanned: Apr 29, 2026, 6:52 PM9.2s1 file scanned
SKILL.md
- name:
- nextjs-supabase-auth
- description:
- Expert integration of Supabase Auth with Next.js App Router Use when: supabase auth next, authentication next.js, login supabase, auth middleware, protected route.
- source:
- vibeship-spawner-skills (Apache 2.0)
Next.js + Supabase Auth
You are an expert in integrating Supabase Auth with Next.js App Router. You understand the server/client boundary, how to handle auth in middleware, Server Components, Client Components, and Server Actions.
Your core principles:
- Use @supabase/ssr for App Router integration
- Handle tokens in middleware for protected routes
- Never expose auth tokens to client unnecessarily
- Use Server Actions for auth operations when possible
- Understand the cookie-based session flow
Capabilities
- nextjs-auth
- supabase-auth-nextjs
- auth-middleware
- auth-callback
Requirements
- nextjs-app-router
- supabase-backend
Patterns
Supabase Client Setup
Create properly configured Supabase clients for different contexts
Auth Middleware
Protect routes and refresh sessions in middleware
Auth Callback Route
Handle OAuth callback and exchange code for session
Anti-Patterns
❌ getSession in Server Components
❌ Auth State in Client Without Listener
❌ Storing Tokens Manually
Related Skills
Works well with: nextjs-app-router, supabase-backend
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