Supabase Auth
Auth & InfrastructureBuilt-in auth system within Supabase with email/password, magic links, social OAuth, and row-level security that ties directly to your Postgres database.
Supabase Auth is a comprehensive authentication system built directly into the Supabase platform, storing user data natively in PostgreSQL with tight Row Level Security (RLS) integration for granular authorization rules at the database level. It supports email/password, magic links, OTP, social OAuth (20+ providers), enterprise SSO, MFA (TOTP, SMS, WebAuthn), and passkeys, with well-designed SDKs for JavaScript, Flutter, and Swift. Offering 50,000 free MAUs and approximately $0.00325 per MAU beyond that, it is one of the most cost-effective auth solutions at scale, though it requires using Supabase as your backend platform and is not a standalone auth solution.
Best for
Developers building full-stack applications on Supabase who want Postgres-native authentication with RLS integration and don't need a standalone auth provider
Last updated: February 23, 2026
20.5/50
Overall Score
API Quality
10/10
GTM Relevance
10.5/20
PricingFreemium
Complexityhard
Learningmedium
Visit supabase.com →API Analysis
REST API
✓
Available
Webhooks
—
—
GraphQL
—
—
OAuth
✓
Available
gmail
Pricing
freemiumFree Tier
Free up to 50,000 MAUs, Pro $25/mo (included with Supabase Pro)
Strengths & Weaknesses
Strengths
Postgres-native architecture stores users directly in your database, enabling seamless RLS integration and data relationships
Extremely generous free tier (50,000 MAUs) with very low per-user costs ($0.00325/MAU) after that
Zero additional vendor lock-in if already using Supabase—auth comes bundled with the platform
Strong developer experience with modern SDKs, clear documentation, and fast integration for Next.js/React apps
Comprehensive auth methods including social OAuth (20+ providers), magic links, OTP, passkeys, and enterprise SSO
Weaknesses
Requires using Supabase as your backend platform—not a standalone auth solution for existing architectures
Row Level Security policies can become complex to manage and debug as authorization rules grow
Less mature enterprise features compared to Auth0/Okta, with fewer advanced compliance certifications
Frontend-direct database access model may not suit teams requiring strict backend-controlled API layers
Alternatives
Reviews
Links
FAQ
What is Supabase Auth?
Supabase Auth is a comprehensive authentication system built directly into the Supabase platform, storing user data natively in PostgreSQL with tight Row Level Security (RLS) integration for granular authorization rules at the database level. It supports email/password, magic links, OTP, social OAuth (20+ providers), enterprise SSO, MFA (TOTP, SMS, WebAuthn), and passkeys, with well-designed SDKs for JavaScript, Flutter, and Swift. Offering 50,000 free MAUs and approximately $0.00325 per MAU beyond that, it is one of the most cost-effective auth solutions at scale, though it requires using Supabase as your backend platform and is not a standalone auth solution.
Is Supabase Auth free?
Yes, Supabase Auth offers a free tier. Free up to 50,000 MAUs, Pro $25/mo (included with Supabase Pro)
What are Supabase Auth alternatives?
Popular alternatives to Supabase Auth include Clerk, Auth0, Firebase Auth, AWS Cognito, NextAuth.js, Lucia. Compare features, API quality, and pricing on GTM Tools.
Does Supabase Auth have an API?
Yes, Supabase Auth provides a REST API. API quality is rated EXCELLENT. Documentation: https://supabase.com/docs/reference.
Who is Supabase Auth best for?
Developers building full-stack applications on Supabase who want Postgres-native authentication with RLS integration and don't need a standalone auth provider