subscription.created

Always precedes member.joined for paid plans and member.trial_joined when trial_ends_at is set.

When this fires

A new subscription is created as the result of a successful paid checkout, an access-code redemption, or a trial activation.

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.created",
  "created_at": "2026-05-18T10:05:00Z",
  "api_version": "2026-05-01",
  "project_id": "prj_01HX...",
  "data": {
    "subscription_id": "sub_01HX...",
    "plan_id": "pln_01HX...",
    "subscriber_id": "usr_01HX...",
    "trial_ends_at": null,
    "access_code": null
  }
}

Field reference

Field	Type	Notes
`id`	string ULID	Unique event id, prefixed `evt_`. Use for idempotent processing.
`type`	string	Always `subscription.created` 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.plan_id`	string ULID	Plan the subscription is on.
`data.subscriber_id`	string ULID	The subscriber's project-scoped user id.
`data.trial_ends_at`	ISO 8601 timestamp \| null	Set when the subscription started in trial state; otherwise `null`.
`data.access_code`	string \| null	Masked code (last 5 chars only) when redemption is the trigger.

Caveats

Listeners should treat this event as the canonical "the subscription exists" signal — don't act on payment.succeeded alone.
For trials, subscription.trial_started fires alongside; for paid checkouts, payment.succeeded follows.

member.joined — always follows for paid plans.
subscription.trial_started — fires alongside when trial_ends_at is set.
Subscription events overview — back to family overview.