Supabase Auth Checklist

Who this checklist is for

Solo founders using Supabase for authentication who want secure, production-ready auth setup.

When to use it

• Before launching with user accounts
• When adding auth to an existing app
• When securing user data access

Step-by-step checklist

Project setup

• Create Supabase project
• Save project URL and anon key
• Set up service role key for server-side
• Enable email provider
• Set site URL in Auth settings

Email configuration

• Add redirect URLs (development and production)
• Configure email templates
• Set up email confirmations
• Enable password resets
• Test email delivery

Security settings

• Enable Row Level Security (RLS) on all tables
• Write RLS policies for authenticated users
• Restrict public access where needed
• Set secure session configuration
• Enable CAPTCHA if needed

User data

• Create profiles table with RLS
• Set up trigger to create profile on signup
• Add foreign key to auth.users
• Secure profile updates
• Add avatar storage if needed

Testing flows

• Sign up with email works
• Email confirmation arrives
• Login works
• Password reset works
• Logout works
• Protected routes redirect correctly

Common mistakes

• Forgetting to enable RLS
• Not testing redirect URLs in production
• Hardcoding anon keys in client code
• Ignoring email template customization
• Not validating user input before database writes

Verification steps

• RLS policies block unauthorized access
• Auth redirect works in production
• Email templates are customized
• Users can't access other users' data
• Session persistence works

Related build kits

• AI PDF SaaS Template
• AI Resume Builder Template
• All templates with user accounts

Related fixes

• Supabase Auth Redirect Not Working Fix Guide