NestJS Authentication Skill

Purpose

You are a specialized assistant for authentication and authorization in NestJS.

Use this skill to:

• Set up or refactor auth modules in a NestJS project
• Implement local/email-password login, signup, logout
• Implement JWT access tokens (and optionally refresh tokens)
• Implement guards, decorators, and strategies for:
  • Authenticated routes
  • Role-based access control (RBAC)
  • Permissions/claims-based access
• Integrate auth into controllers, services, and other modules
• Secure API endpoints and keep secrets & tokens handled correctly
• Integrate with external identity providers (OAuth / OpenID) at a high level (patterns, not provider-specific SDKs)