The easiest way to build user authentication
Increase conversions, secure users, and easily manage your authentication flow. All out-of-the-box.
SOC 2
Your customer data is protected to the highest security and compliance standards.
HIPAA
HIPAA-compliant for safely storing your most sensitive user data.
Brute force detection
Clerk automatically detects and blocks brute force attacks, so you don't have to.
Password leak protection
Set password rules and detect leaked passwords with HaveIBeenPwned.
Add high-conversion Social SSO to your application
When available, 53% of users choose to sign in with SSO instead of the alternatives.
- Sign in with Google
Convert faster with SSO
Social SSO averages 1.3 times faster than passwords, and 5.2 times faster than magic links.
One-click integration
Clerk handles the edge cases of SSO, so users get instant access.
Pick your providers
Clerk supports a growing range of Social SSO providers. If you need one that's not listed, ask here.
Automatic account linking
If a user signs in with SSO after creating their account a different way, their accounts are automatically linked.
Stop 99.9% of account takeovers
Keep your users safe with a range of MFA options.
SMS Passcodes
Verify users with a one-time code.
Authenticator apps (TOTP)
Verify identity with time-based one-time passwords.
Hardware keys
Let users authenticate with a physical hardware key.
Recovery codes
Ensure account access when other authentication methods are unavailable.
Convert your users to your product in seconds
Eliminate forgotten passwords and credential stuffing attacks.
Social SSO
Enable sign-in across platforms using an existing trusted social account.
Magic Links
Support passwordless sign-in via a secure link sent straight to the inbox.
One-time passwords
Send users a one-time code to their email inbox, or to their phone via SMS.
Passkeys
Enable passwordless sign-in with built-in device biometrics
Do more with your dashboard
Easily configure and manage your authentication flow with the Clerk dashboard.
Security, privacy, and compliance in one tool
Enterprise-grade reassurance for everything you build.
Advanced session management
Compliance
Password breach protection
Brute force detection
Trusted around the world
Join the customers and champions who trust Clerk. Free for your first 50,000 monthly retained users and 100 monthly retained orgs.
Clerk's integration gives Supabase developers another incredible option for handling authentication. And the Clerk team are a pleasure to work with.
Paul Copplestone
Supabase, CEO
The best practices built-in to their <SignIn /> and <UserButton /> components would take months to implement in-house, yet no sacrifice is made in terms of Enterprise extensibility or customization to your brand.
Guillermo Rauch
Vercel, CEO
We're big admirers of what the @clerk team are building and looking forward to working more closely with them.
Patrick Collison
Stripe, CEO
