Production-Ready OpenAI (GPT) Template

OpenAI’s Next.js quickstart template provides a simple foundation for AI applications using Serverless API Routes and can be deployed easily to platforms such as Vercel or Cloudflare, but it lacks production essentials including authentication and usage controls. The walkthrough shows how to adapt the template’s frontend form and OpenAI completion API route for other prompt-driven products, then integrate PropelAuth to provide hosted signup, login, profiles, and optional social sign-on. Authentication is enforced on the frontend through protected providers and on the backend by passing an access token in request headers and validating it with PropelAuth’s Node SDK before allowing API access. The approach can support either consumer accounts or B2B organizations, with organization features such as invitations, roles, permissions, and enterprise SSO. To control costs and enable billing, the application records requests by user or organization ID in a selected data store, such as Postgres or Cloudflare Durable Objects, and can periodically aggregate request counts for reporting to a billing system like Stripe.

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