Introduction
Introduction to Better Auth.
Better Auth is a framework-agnostic, universal authentication and authorization framework for TypeScript. It provides a comprehensive set of features out of the box and includes a plugin ecosystem that simplifies adding advanced functionalities. Whether you need 2FA, passkey, multi-tenancy, multi-session support, or even enterprise features like SSO, creating your own IDP, it lets you focus on building your application instead of reinventing the wheel.
Features
Better Auth aims to be the most comprehensive auth library. It provides a wide range of features out of the box and allows you to extend it with plugins. Here are some of the features:
Framework Agnostic
Support for most popular frameworks
Email & Password
Built-in support for secure email and password authentication
Account & Session Management
Manage user accounts and sessions with ease
Built-In Rate Limiter
Built-in rate limiter with custom rules
Automatic Database Management
Automatic database management and migrations
Social Sign-on
Multiple social sign-on providers
Organization & Access Control
Manage organizations and access control
Two Factor Authentication
Secure your users with two factor authentication
Plugin Ecosystem
Even more capabilities with plugins
...and much more!
AI resources
Your auth lives in your codebase. Better Auth fits well into agentic workflows. We provide the following resources:
AI Chat: Ask questions about the documentation from this site using Ask AI (cmd/ctrl + I), grounded in the same docs you are reading.
LLMs.txt: A machine-friendly index of the docs at better-auth.com/llms.txt, with links to per-page Markdown for assistants and tools.
MCP Server: A remote documentation MCP at https://mcp.better-auth.com/mcp so clients such as Cursor, Claude Code, and Open Code can search docs, see examples, and help with setup.
Skills: Curated agent skills for Better Auth—install with npx skills add better-auth/skills so your coding agent follows library conventions and patterns.
For more information, see AI resources.
