POST /v1/subscriptions/{subscriptionId}/prepay

Authentication

Send an API key as a bearer token. The key must carry the billing.payment.manage permission; a key without it is refused with 403, not 404.

This endpoint takes no organisation id. Your key already identifies the organisation it belongs to, and the response is scoped to it.

Try it

Replace anything in angle brackets with your own values, and the key placeholder with a key from your dashboard.

curl -X POST https://api.zinndigital.com/v1/subscriptions/{subscriptionId}/prepay \
  -H "Authorization: Bearer zdk_live_…" \
  -H "Content-Type: application/json" \
  -d '{ "periods": <integer> }'

Signed in? The API console in your dashboard fills in your real organisation id and your own key, and runs the request against the live API so you can see the actual response. Open this endpoint in the API console

Details

Mints an **unpaid** order for N whole billing periods. ⛔⛔ **No money is taken here.** The client then settles that order through `POST /v1/orders/{orderId}/pay`, which already knows how to pay from account balance, from a gateway, or from both. That separation is the point rather than an implementation detail: it is what lets a customer with **no chargeable mandate** use this at all — somebody paying in crypto, or in a market whose regulator forbids an off-session charge. They top up once and pay six months from their balance, with no card anywhere in the flow. Replaying the same request returns the **same** order rather than a second one, so a double-clicked button cannot bill twice. Asking for a *different* number of periods supersedes the earlier unpaid prepay order and mints a fresh one — a customer changing their mind is not a collision. An unpaid order against this subscription that is **not** a prepayment (a plan change, say) is refused with `ORDER_IN_FLIGHT` instead, and is never cancelled on the customer's behalf. Requires `billing.payment.manage`. `422` carries a `code` in its details: `TOO_FEW` / `TOO_MANY` (outside the allowed range), `NOT_PREPAYABLE` (ended, comped or free), `RAIL_NOT_SUPPORTED` (billed by PayPal on its own schedule), or `ORDER_IN_FLIGHT`.

Parameters

Request body

Response

Errors this endpoint can return

401 · 403 · 404 · 422 · 429