Add Stripe payments and subscriptions to your Next.js app

You want to start charging, and the payments part keeps getting pushed back. I'll add Stripe to your Next.js app properly, so money and access stay in sync.

What you get:
- Stripe Checkout for one-time payments and/or subscriptions
- Customer portal so users can upgrade, cancel and update their card themselves
- A webhook endpoint with signature verification that updates your database (Supabase, Postgres or your own API)
- Access checks so paid features are only available to paying users
- Tested end to end in Stripe test mode, with a short handover note on going live

I've built this flow in my own products (one-time and subscription plans on Next.js + Supabase) and I build the checkout for a large European online retailer in my day job, so I care about the edge cases: failed payments, duplicate events, cancelled subscriptions.

Going live stays your call: you switch the keys when you're ready.