subscription.amount_changed

Generated from COPE public event contracts. Do not edit this page by hand.

Use this event to mirror a repriced subscription into your own billing records. The change is applied in place with no proration, so nothing is charged when it happens: the new amount bills at the existing cycle boundary. effective_at is when we expect that to be — it is derived from the subscription’s next payment date at the moment of the change, and a cycle that later moves for an unrelated reason leaves it stale, so treat it as a prediction and take the charge itself as the confirmation. old_recurring_amount_cents and new_recurring_amount_cents are what the buyer is billed, quantity included, in currency. The body names the business, the order, the line item and the subscription, each as object and id; store subscription.id to match later events on the same subscription, and read everything else about them through the API.

Delivery Contract

Field	Value
Encoding	JSON: `id`, `type`, `version`, `source`, `created_at`, `data`
Delivery	At least once
Idempotency	Deduplicate on `id`: every retry and replay of this event repeats it, and `X-Cope-Event-Id` carries it.
Source	`cope.subscription`
Category	Subscriptions
Availability	Available in the public webhook reference.
Schema title	subscription.amount_changed webhook body
Schema ID	`https://schemas.cope.com/webhooks/subscription.amount_changed/v1`

Payload Fields

Field	Required	Type	Allowed Values	Description
`business`	no	`object`	-	The business that sold the subscription.
`currency`	yes	`string`	-	ISO 4217 currency code of both amounts.
`effective_at`	yes	`string	null`	-	The renewal the new amount first bills. A prediction taken at the time of the change; the charge itself is the confirmation. Null when no renewal date is known.
`line_item`	no	`object`	-	The order line the subscription belongs to.
`new_recurring_amount_cents`	yes	`integer`	-	What the buyer is billed per cycle from effective_at, in minor units, quantity included.
`old_recurring_amount_cents`	yes	`integer`	-	What the buyer was billed per cycle before the change, in minor units, quantity included.
`order`	no	`object`	-	The order the subscription was bought on.
`subscription`	no	`object`	-	The subscription. Absent when the event names no subscription id of the right shape.

Example delivery

{
  "created_at": "2026-03-02T09:14:08Z",
  "data": {
    "business": {
      "id": "biz_g7-Jq2PxT_4mRvNa",
      "object": "business"
    },
    "currency": "EUR",
    "effective_at": "2026-04-01T08:00:00Z",
    "line_item": {
      "id": "li_4nHs8QwZ2pLk7XcY",
      "object": "line_item"
    },
    "new_recurring_amount_cents": 5900,
    "old_recurring_amount_cents": 4900,
    "order": {
      "id": "ord_V7kP2mQx9RtL",
      "object": "order"
    },
    "subscription": {
      "id": "ps_Gm3Tq8ZrW1bN",
      "object": "subscription"
    }
  },
  "id": "a4c8e2f6-1d3b-4e57-9b80-6f2a7c5e3d19",
  "source": "cope.subscription",
  "type": "subscription.amount_changed",
  "version": "v1"
}

Compatibility

Fields may be added within the same major version. Removing or changing the meaning of a documented field requires a new event version.

​subscription.amount_changed

​Delivery Contract

​Payload Fields

​Example delivery

​Compatibility

subscription.amount_changed

Delivery Contract

Payload Fields

Example delivery

Compatibility