From fork to first paying customer in a weekend

July 14, 2026 · The GoToMarketFit Team · 6 min read

The promise of a boilerplate is speed, but most of them hand you a pile of code and leave you to figure out the order of operations. Here's the path we'd actually take, top to bottom, to go from a fresh fork to a live checkout.

The parts that are already done

You don't build any of this — it ships wired together:

Everything below is configuration, not code you have to write.

Saturday morning: make it yours

1. Fork the repo and install dependencies.
2. Fill in src/lib/site.ts — your product name, contact address, and legal entity. The landing and legal pages read from it, so one edit updates the whole site.
3. Point the environment variables at your own Supabase project and Lemon Squeezy store. Never commit .env.local; it stays local and is set in your host's dashboard for production.

Saturday afternoon: the money path

The checkout is webhook-driven, which is the part people get wrong. The flow is:

// A payment isn't "done" when the browser redirects back —
// it's done when the webhook says so, verified and idempotent.
export async function fulfillOrder(event: WebhookEvent) {
  if (await alreadyFulfilled(event.orderId)) return; // safe to retry
  await grantAccess(event.customer);
  await markFulfilled(event.orderId);
}

Two rules make this reliable:

• Verify the signature. Treat any unsigned or badly signed webhook as hostile and drop it.
• Make fulfillment idempotent. Payment providers retry. If the same order can be processed twice, you'll eventually double-grant access or double-send an invite.

The redirect back to your /thank-you page is a hint that payment succeeded, not proof. The webhook is the source of truth. Design for the webhook arriving late, out of order, or twice.

Sunday: make it real before you share it

• Replace the placeholder legal copy and have it reviewed for your jurisdiction.
• Send yourself a live test purchase and confirm the invite, role, and email all land.
• Check the backfill path so a payment that slipped through can be re-fulfilled without manual database surgery.

That's the whole arc: a weekend, mostly spent in config files and a payment dashboard, ending with something a stranger can actually buy.

Want the deep dive on any one step? Tell us which — we'll turn it into its own post.