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better-auth

Manages authentication and authorization in Next.js apps with Better Auth.

3|Updated Jan 3, 2026
Search Tags:#authorization#authentication#oauth#next.js#rbac#api keys
One-click install
npx skills add https://github.com/NextSpark-js/nextspark --skill better-auth-nextspark-js
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: better-auth
Source: https://github.com/NextSpark-js/nextspark/tree/main/.claude/skills/better-auth
Command: npx skills add https://github.com/NextSpark-js/nextspark --skill better-auth-nextspark-js

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides a comprehensive and secure authentication system for your Next.js application, handling everything from user sign-up and login to API key management and role-based access control.

Core Features & Use Cases

  • Multi-Method Authentication: Supports email/password, OAuth (Google), and API keys.
  • Role-Based Access Control: Differentiates between global user roles and team-specific roles for granular permissions.
  • User Metadata Management: Allows storing and retrieving custom user preferences and settings.
  • Use Case: Implement a secure login flow for your SaaS application, allowing users to sign up with their email or Google account, and then manage their access within different teams based on their assigned roles.

Quick Start

Use the better-auth skill to implement email/password sign-up for new users.

Frequently Asked Questions about better-auth

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement OAuth and email password authentication in a Next.js app?▼

Authentication in a Next.js app can be implemented using the Better Auth framework to manage email/password sign-ups and Google OAuth integration. This approach handles user login flows and securely manages sessions for your SaaS application.

What is the best way to structure role-based access control for different teams?▼

Role-based access control for teams should differentiate between global user roles and team-specific roles. This structure allows you to assign granular permissions to users operating within specific team contexts in your application.

Does this authentication approach support API key validation for Next.js?▼

Yes, API key validation is fully supported alongside dual authentication patterns. You can manage token generation and validate API keys to secure access to your application resources.

How do I manage user metadata and custom preferences with Better Auth?▼

User metadata management allows you to store and retrieve custom user preferences and settings directly within the authentication system. This feature supports maintaining individual user configurations across sessions.

Can I use this to secure a multi-tenant SaaS application?▼

Yes, securing a multi-tenant SaaS application is a primary use case. You can allow users to sign up via email or Google, then manage their access within different teams based on assigned role-based permissions.

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