pass_series.completed

A holder reached the last date of their season, with the final attendance tallies.

When this fires

The last date on one holder's season ticket closed. Their season is over.

Fires per holder, not per series, because "finished" is a fact about a purchase: two people holding the same season reach its end on different dates when one of them bought in late.

This is the renewal signal

The tallies are the half worth acting on. A completion with two of ten attended is a churn signal; the same completion with ten of ten is a renewal one. If the creator linked a next season, the holders-only presale opens around the same moment — see pass_series.presale_opened.

Required ability

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

Payload

{
  "id": "evt_01HX...",
  "type": "pass_series.completed",
  "created_at": "2026-11-29T21:00:06Z",
  "api_version": "2026-05-01",
  "project_id": "7f3d1c92-8b45-4e6a-9d21-5c8e0a4b6f13",
  "data": {
    "subscription_id": "5b7e2d40-1a86-4c39-97f2-e83d0b16c5a4",
    "subscriber_id": "2a91c4e7-6f38-4b52-8e0d-9c1a7b3f5d80",
    "plan_id": "c4e82f16-93a7-4d5b-b81c-6e0f27a94d3b",
    "plan_name": "Autumn Season Ticket",
    "passes_total": 10,
    "passes_attended": 8,
    "passes_missed": 2,
    "successor_plan_id": "b3e70d21-5f94-4a6c-8127-cd4a91e6f508"
  }
}

Field reference

Field	Type	Notes
`id`	string ULID	Unique event id, prefixed `evt_`. Use for idempotent processing.
`type`	string	Always `pass_series.completed` 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	The season ticket that finished.
`data.subscriber_id`	string UUID	The holder.
`data.plan_id`	string UUID	The series plan.
`data.plan_name`	string	Its name.
`data.passes_total`	integer	Dates this holder's season covered.
`data.passes_attended`	integer	How many they joined.
`data.passes_missed`	integer	How many they did not.
`data.successor_plan_id`	string UUID \| null	The next season, if the creator linked one. `null` means there is no follow-on.

Caveats

The subscription is expired at this point, which is normal and not a failure. A dated purchase ends when its dates run out.
passes_total is this holder's slate, not the plan's. A mid-season buyer received fewer dates for the same price and their totals reflect that.
passes_attended + passes_missed can be less than passes_total when some dates were already covered by passes the holder owned individually — those were not issued twice.
successor_plan_id being present does not mean the holder has been invited yet. The presale opens when the series retires, which is a separate event.
The plan itself is deactivated automatically once its last date has run for everybody. That arrives as plan.deactivated with reason: series_exhausted.

pass_series.leg_completed — each date along the way, including this one.
pass_series.presale_opened — the invitation to the next season.
plan.deactivated — the series taking itself off sale.
Pass series events overview — back to family overview.