About
Clerk is an authentication and user management platform that helps teams add secure sign-up, sign-in, and account management flows to web and mobile applications. It provides prebuilt UI components, APIs, and developer tooling so product teams can launch faster while keeping authentication and user administration under their own brand and domain.
Beyond core authentication, Clerk supports organization management, billing-related UI, machine authentication, and security features such as multifactor authentication, bot protection, session management, and fraud prevention. It is designed for modern SaaS products that need both consumer and B2B identity workflows with flexible framework support and integrations.
- Prebuilt components for sign-up, sign-in, profiles, organizations, and billing
- Support for B2C and B2B authentication workflows
- Security features including MFA, passkeys, bot protection, and session controls
- Framework SDKs and integrations for modern application stacks
What's included in the free tier
- Up to 3 dashboard seats for team collaboration.
- Unlimited applications for all projects.
- 50,000 monthly retained users per app.
- Up to 5 user impersonations.
- APIs and prebuilt UIs for sign-up, sign-in, and user profile.
- Most authentication features included.
- Custom domain support.
- Fixed 7-day session lifetime.
- Machine Authentication with API Keys and M2M Tokens, subject to monthly limits.
- Up to 3 social connections.
- Usernames for sign-in.
- Passwords with leaked-password checks.
- Email code authentication.
- Email link authentication.
- Sign-in tokens for API-generated single-use authentication.
- Web3 wallet authentication.
- Automatic account linking across methods.
- User metadata storage.
- Webhooks for data sync.
- Account lockout and brute-force protection.
- Bot protection for sign-up security.
- Block email subaddresses.
- Block disposable email addresses.
- Require invitations for access.
- Custom session tokens.
- Custom JWT templates.
- Device tracking and revocation.
- Full data exports.
- Community support via Discord.
- Email support for billing, registration, and abuse queries only.
- GDPR / DPA compliance.
- Free B2B Authentication add-on with 100 MRO included per app.
- Up to 20 members per organization.
- Admin and Member roles included.
- Custom permissions for organizations.
- Invitation emails for organizations.
- Free Administration add-on with 5 impersonations per month.
See Clerk pricing for current limits.
