ProStack uses Better-Auth to provide a comprehensive authentication system. The authentication API handles user registration, login, session management, and integration with Polar for subscription management.

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Authentication Flow

All authentication endpoints are managed by Better-Auth and are available under the /api/auth path. The authentication system supports:
  • Email/password authentication
  • Social login (Google)
  • Password reset
  • Team/organization management
  • Subscription and billing integration with Polar

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Polar Subscription Endpoints

ProStack integrates with Polar for subscription and billing management. The following endpoints are available for authenticated users:

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Checkout a Product/Plan

GET /api/auth/checkout/{product-slug}
This endpoint initiates the checkout process for a subscription plan. The user must be authenticated, and the {product-slug} must match one of the available plan slugs configured in the application. After successful checkout, the user is redirected back to the application.

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Access Customer Portal

GET /api/auth/portal
This endpoint redirects authenticated users to their Polar customer portal where they can manage their subscriptions, billing information, and payment methods.

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Next Steps

Team API

Team invitation management

Authentication Feature

View the authentication documentation