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Payments

Stripe

Payments and billing infrastructure for cards, checkout, and subscriptions. You are typically the merchant.

Official site

Pricing as seen

See site. Card fees vary by country and product, so this entry does not quote a rate.

Checked 16 Oct 2026. Prices change. Confirm on the vendor site before you buy.

Pricing source

Updated

16 Oct 2026

Added

16 Oct 2026

Supported builders

LovableBoltv0ReplitCursorClaude CodeWindsurf

Any of these builders can send a user to Stripe Checkout if the secret key stays on a server or a serverless function. A client-only integration that confirms payment in the browser is not enough.

What it is

Stripe’s site describes financial infrastructure for taking payments and running billing models, online and in person, with APIs, a dashboard, and prebuilt Checkout. For a small AI-built app this usually means Checkout or Billing, plus webhooks.

You are generally the merchant of record. Tax, disputes, and the secret API key are yours. The publishable key may be in the browser. The secret key and the webhook signing secret must not be. A success URL is not proof of payment.

Best for: An app that charges cards or subscriptions and has somewhere to put a secret key that is not the frontend.

Watch-outs

  • You remain responsible for tax and disputes unless you add a separate merchant-of-record product.
  • Test mode and live mode keys are different. Shipping a live secret to the client is a serious incident.

Our take

Opinion from ShipSafeStack. Not a score, not a certification, and not a sponsorship.

The default when you want cards and subscriptions and you can handle being the merchant. The bug in generated apps is almost always the same: the UI says paid because the redirect happened. Verify the webhook signature on the raw body, on the server.

Keep reading

Others in Payments

  • Paddle
    Payments
    Merchant of record for software and digital products. Paddle handles payments, sales tax, and compliance across markets.

    Pricing as seen: See site. Paddle publishes all-inclusive or custom pricing rather than a simple per-card rate.

  • Polar
    Payments
    Merchant of record and usage billing for software, with subscriptions, credits, and metered events.

    Pricing as seen: Free plan listed at 5% + 50¢ per transaction. Paid plans listed at $20, $100, and $400 per month with lower transaction fees (3.80% + 40¢ down to 3.40% + 30¢). A startup program was also listed.