member.converted

Fires exactly once per trial conversion.

When this fires

A trial subscription successfully converts to a paying subscription. Fires once per conversion.

Required ability

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

Payload

{
  "id": "evt_01HX...",
  "type": "member.converted",
  "created_at": "2026-05-25T10:05:00Z",
  "api_version": "2026-05-01",
  "project_id": "prj_01HX...",
  "data": {
    "subscription_id": "sub_01HX...",
    "plan_id": "pln_01HX...",
    "subscriber_id": "usr_01HX...",
    "provider": "stripe"
  }
}

Field reference

Field	Type	Notes
`id`	string ULID	Unique event id, prefixed `evt_`. Use for idempotent processing.
`type`	string	Always `member.converted` 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 that converted.
`data.plan_id`	string ULID	Plan the subscription is on.
`data.subscriber_id`	string ULID	Subscriber's project-scoped user id.
`data.provider`	string	Provider slug for the converting charge.

Caveats

Pairs with subscription.activated and payment.succeeded.
A subscriber who churns and starts a new trial later does not re-emit member.converted for the prior trial — each trial-conversion is its own bounded event.

member.trial_joined — predecessor.
subscription.activated — fires alongside.
Member events overview — back to family overview.