subscription.activated

This is the paid-acquisition event. If you only subscribe to one subscription event for a paying audience, subscribe to this one — not subscription.created, which never fires for paid checkouts.

When this fires

On the first successful payment for a subscription, across every payment provider — Stripe, PayPal, Paystack, Razorpay, Skrill, CeyPay, and CoinPayments. It covers both recurring subscriptions and one-time (non-recurring) passes.

It fires once per subscription, at acquisition. It is not a general "became active" signal:

Transition	Event actually emitted
First paid checkout	`subscription.activated`
Recurring renewal charge	`subscription.renewed`
Paused → resumed	`subscription.unpaused`
Cancelled → reinstated before `ends_at`	`subscription.reactivated`
Past-due → collected	`subscription.renewed`
Trial → paying	`member.converted`
Access code / cardless trial	`subscription.created`

A Stripe subscription that begins in a trial still emits subscription.activated at acquisition, because the provider creates the subscription at that moment. The later trial-to-paid transition emits member.converted only.

Required ability

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

Payload

{
  "id": "evt_01HX...",
  "type": "subscription.activated",
  "created_at": "2026-05-18T10:05:00Z",
  "api_version": "2026-05-01",
  "project_id": "7f3d1c92-8b45-4e6a-9d21-5c8e0a4b6f13",
  "data": {
    "subscription_id": "5b7e2d40-1a86-4c39-97f2-e83d0b16c5a4",
    "plan_id": "c4e82f16-93a7-4d5b-b81c-6e0f27a94d3b",
    "subscriber_id": "2a91c4e7-6f38-4b52-8e0d-9c1a7b3f5d80",
    "provider": "stripe"
  }
}

Field reference

Field	Type	Notes
`id`	string ULID	Unique event id, prefixed `evt_`. Use for idempotent processing.
`type`	string	Always `subscription.activated` for this event.
`created_at`	ISO 8601 timestamp	Server-side emission time.
`api_version`	string	Webhook API contract version.
`project_id`	string UUID	Project this event belongs to.
`data.subscription_id`	string UUID	Subscription identifier.
`data.plan_id`	string UUID	Plan the subscription is on.
`data.subscriber_id`	string UUID	Subscriber's project-scoped user id.
`data.provider`	string	One of `stripe`, `paypal`, `paystack`, `razorpay`, `skrill`, `ceypay`, `coinpayments`.

data.provider is never access_code on this event — code redemptions emit subscription.created instead.

Caveats

Once per subscription. Stripe and PayPal de-duplicate with a persistent guard key; the remaining providers emit only on the non-renewal branch of their payment handler. Renewals never re-emit it.
To capture every acquisition path — paid, comped code, and cardless trial — subscribe to both subscription.activated and subscription.created, then de-duplicate on data.subscription_id.
Paid acquisitions do not emit member.joined. That event is access-code-only. Use subscription.activated as the paid-audience join signal.
payment.succeeded fires for the same charge and carries the amount, currency, and external payment id, which this event does not.
The POST /v1/webhook-endpoints/{endpoint}/test endpoint sends a synthetic subscription.created payload, never subscription.activated. Testing an endpoint does not exercise this event.

subscription.created — the zero-payment acquisition equivalent.
payment.succeeded — the charge behind this activation.
subscription.renewed — every subsequent cycle.
member.converted — trial-to-paying transition.
Subscription events overview — back to family overview.