Launch a checkout
GET/checkouts/:checkout_id/launch
Resolves the configured provider launch. Redirect providers return a redirect and browser-SDK providers return a minimal HTML launcher. Access is authorized by the short-lived signed token in the launch URL. This endpoint never confirms payment.
Request
Responses
- 200
- 302
- 401
- 403
- 404
- 409
- 429
Browser-SDK checkout launcher
Redirect to the provider checkout
Response Headers
Unauthorized
Forbidden (realm/account mismatch, billing account not derived from your session/principal, or insufficient role)
Not Found
Conflict (idempotency body mismatch, duplicate adjustment, or an unsupported provider capability). Unsupported mutations return BILLING.PAYMENT_PROVIDER_CAPABILITY_UNSUPPORTED before Customer creation, provider I/O, or local state mutation. Concurrent use of the same Idempotency-Key returns WRITE.IDEMPOTENCY_IN_PROGRESS; different keys are independent requests whose final ordering is owned by the PSP. A subscription Checkout with mixed group, currency, or recurrence facts is rejected before Customer lookup or provider I/O. Missing or inconsistent selected Customer bindings return BILLING.PAYMENT_PROVIDER_CUSTOMER_REQUIRED or BILLING.PAYMENT_PROVIDER_CUSTOMER_CONFLICT without silently replacing the binding.
Rate limited
Response Headers
Seconds to wait before retry.