Select your SDK

FastAuth provides two SDKs tailored for different frontend frameworks:

SDK	Package	Use Case
Browser SDK	@fast-auth-near/browser-sdk	Vanilla JavaScript, Vue, Svelte, or any web framework
React SDK	@fast-auth-near/react-sdk	React applications with hooks and context providers

Browser SDK

The Browser SDK provides a framework-agnostic FastAuthClient class that works with any JavaScript application. Use this if:

• You're building with vanilla JavaScript, TypeScript, Vue, Svelte, or Angular.
• You need full control over the authentication flow.
• You prefer a class-based API.

npm install @fast-auth-near/browser-sdk

For detailed documentation, see the Browser SDK Getting Started and Browser SDK Client API.

React SDK

The React SDK wraps the Browser SDK with React-specific features like hooks and context providers. Use this if:

• You're building a React application.
• You want to use hooks like useFastAuth(), useIsLoggedIn(), and useSigner().
• You prefer declarative state management.

npm install @fast-auth-near/react-sdk

For detailed documentation, see the React SDK Getting Started, React SDK Client API, and React SDK Hooks for hooks usage.