add-auth

To add NextAuth authentication to a T3 stack project, this skill automates API route creation, database schema generation, and environment variable management for secure access control workflows.

NextAuth supports both modes in Next.js via dual-mode authentication, allowing you to choose between simple environment-variable-based admin credentials or a full-featured database-backed user account system.

Before configuring NextAuth in your T3 stack application, you need Node.js and pnpm installed, plus an existing Next.js project structure to support automated code injection and database migrations.

You can secure a private dashboard using environment variables instead of a database with NextAuth by selecting the dual-mode auth feature, which provides a simple, environment-variable-based admin login for private backoffices.

To handle database schema generation and migrations when implementing access control in Next.js, this skill automates schema configuration and performs database migrations to maintain project integrity during secure access setup.

You should not use automated code injection for authentication setup if you lack an existing Next.js project structure, as the skill requires Node.js, pnpm, and an established project directory to perform automated migrations and code injection correctly.