subscription.* events

Cancellation recorded; access continues until `ends_at`.

When this fires

Cancellation is recorded by the subscriber, by the creator, or by the payment provider (a gateway-side cancellation, or a terminal payment failure on CeyPay, CoinPayments or Skrill). If the paid period still has time left, the subscription stays active and the subscriber keeps access until ends_at, after which subscription.expired fires. If no paid period remains, ends_at is set to the cancellation moment and resource access is revoked straight away.

Caveats

  • Cancellation is reversible until ends_at; see subscription.reactivated.
  • A renewal does not occur after cancellation; subscription.renewed will not fire.

Related events

  • subscription.expired: fires when the period ends.
  • subscription.reactivated: reverse path.
postWebhooksubscription.cancelled

Headers

SB-Signaturestring required

t=<unix seconds>,v1=<hex>: the HMAC-SHA256 of "<t>.<raw body>" under the endpoint's secret. Verify it before acting, and refuse a t more than 300 seconds from now. During a secret rotation a v0= signature under the previous secret may precede v1=.

SB-Event-Idstring required

The event's ULID, bare. The envelope's id is the same ULID prefixed evt_, so strip the prefix before comparing. Deduplicate on it: a retry carries the same id.

SB-Event-Namestring required

The event name, the same as the envelope's type.

Content-Typestring required

Always application/json.

User-Agentstring required

Always Subscriby-Webhooks/1.0.

Payload

idstring required

A ULID unique to the event, prefixed evt_. Every retry carries the same id, so it is the key to deduplicate on.

type'subscription.cancelled' required

The event name, always subscription.cancelled here.

created_atstring date-time required

When the event was emitted, server time, ISO 8601.

api_versionstring required

The contract version of the payload shape, 2026-05-01 today. A breaking change to a shape ships under a new version.

project_idstring uuid nullable required

The project the event belongs to; null for team-scoped and billing events.

Response

Your endpoint acknowledged the delivery. Any 2xx status within 30 seconds marks it delivered; the response body is ignored.

Changes

Webhooks have no change history: a webhook is keyed by its event name rather than a path and method, so no recorded change can name it.