Clerk Authentication

Clerk is more than a "sign-in box." Integrate complete user management UIs and APIs, purpose-built for React, Next.js, and the Modern Web.

Auth & User components Everything you need to onboard your users, and let them manage their account.

An optimized sign in experience thats also completely customizable. Choose the auth strategies you need — passwords, email codes or links, OAuth and more.

Enable users to sign up using the authentication strategy you need — email addresses, phone numbers, usernames, passwords, email codes or links, OAuth, and more.

Enable users to manage their profile and security settings. Mount in your application or open as a modal.

Enable users to switch accounts, manage their own accounts, and sign out. Mount in your application or open as a modal.

The most powerful APIs built specifically for the Modern Web

New technologies have made building on the web much easier; however, many dev tools haven’t kept up. At Clerk, we believe a component is worth 1,000 APIs and that they should work seamlessly in any stack so that you can build faster.