Proxy developer docs

Proxy adds a shareable payer handoff to a checkout the merchant already owns. The buyer sends the handoff to a payer, who completes payment in Stripe or Shopify.

Start with StripeConnect Stripe to Proxy and configure the shared setup used by every Stripe integration path.

Start with ShopifyCheck whether Proxy fits your Shopify store, confirm installation access, and configure native Shopify Checkout.

Integrate with a coding agentGive a coding agent the facts and canonical resources it needs to choose, implement, and validate a Proxy integration.

If you use both providers

Choose the provider that owns the cart and final checkout for the integration you are starting.

How a handoff works

1. A buyer starts a cart or purchase request with the merchant.
2. The merchant integration creates one durable Proxy handoff for the intended order.
3. The buyer shares the handoff with a payer.
4. The payer reviews the request and continues to the merchant’s Stripe or Shopify checkout.
5. Proxy observes provider results and sends signed merchant events.
6. The merchant decides when to fulfill the order or grant access.

Proxy owns the delegated session and hosted handoff. The merchant remains responsible for checkout, catalog, pricing, taxes, fulfillment, and merchant-of-record obligations.