subscription.downgraded

When this fires

A subscriber switches to a lower-priced plan. Pro-ration credit is applied through the provider where supported.

Required ability

project-subscription:view-any — token must carry this at mint time to subscribe an endpoint to this event.

Payload

{
  "id": "evt_01HX...",
  "type": "subscription.downgraded",
  "created_at": "2026-05-22T10:05:00Z",
  "api_version": "2026-05-01",
  "project_id": "prj_01HX...",
  "data": {
    "subscription_id": "sub_01HX...",
    "subscriber_id": "usr_01HX...",
    "from_plan_id": "pln_01HX_premium",
    "to_plan_id": "pln_01HX_basic",
    "proration_amount": "-7.25"
  }
}

Field reference

Field	Type	Notes
`id`	string ULID	Unique event id, prefixed `evt_`. Use for idempotent processing.
`type`	string	Always `subscription.downgraded` for this event.
`created_at`	ISO 8601 timestamp	Server-side emission time.
`api_version`	string	Webhook API contract version.
`project_id`	string ULID	Project this event belongs to.
`data.subscription_id`	string ULID	Subscription identifier.
`data.subscriber_id`	string ULID	Subscriber's project-scoped user id.
`data.from_plan_id`	string ULID	Plan id the subscription was on prior to the change.
`data.to_plan_id`	string ULID	Plan id the subscription is now on.
`data.proration_amount`	string	Pro-ration adjustment in major units, as a string. May be negative for credit issued.

Caveats

Pro-ration credit is provider-dependent. Some providers issue credit memos rather than refunds; see the provider integration page docs.
Resource access tied to the higher tier may be revoked on the next renewal cycle.

subscription.upgraded — opposite direction.
member.resource_removed — emitted when premium-tier resources are detached.
Subscription events overview — back to family overview.