Module 3 — Edge Functions, Stripe Checkout & Webhooks

When your Lovable application requires server-side secrets (like Stripe secret keys or AI model API keys), you invoke Supabase Edge Functions or Next.js route handlers.

Lesson 3.1 — Stripe Checkout Integration

• Client initiates checkout request with selected price_id.
• Edge Function creates a Stripe Checkout Session with client_reference_id = user.id.
• Webhook endpoint listens for checkout.session.completed, verifies the signature, and updates user entitlements in the database.
• Idempotency guards prevent duplicate provisioning.