---
title: "A holder reached the last date of their season, with the final attendance tallies."
method: POST
path: "pass_series.completed"
tags: ["pass_series.* events"]
---

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

`POST pass_series.completed` (webhook)

### 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`.

### 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`.

### Related events

- `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.

## Headers

- `SB-Signature` string, required
- `SB-Event-Id` string, required
- `SB-Event-Name` string, required
- `Content-Type` string, required
- `User-Agent` string, required

## Payload

- object: The envelope every event is delivered in.
  - `id` string, required: A ULID unique to the event, prefixed `evt_`. Every retry carries the same id, so it is the key to deduplicate on.
  - `type` 'pass_series.completed', required: The event name, always `pass_series.completed` here.
  - `created_at` string, date-time, required: When the event was emitted, server time, ISO 8601.
  - `api_version` string, required: The contract version of the payload shape, `2026-05-01` today. A breaking change to a shape ships under a new version.
  - `project_id` string, uuid, nullable, required: The project the event belongs to; null for team-scoped and billing events.
  - `data` object, required: The event-specific payload. Keys that do not apply to a given emission are omitted rather than sent as null, so check for presence.
    - `subscription_id` string, uuid, required: The season ticket that finished.
    - `subscriber_id` string, uuid, required: The holder.
    - `plan_id` string, uuid, required: The series plan.
    - `plan_name` string, required: Its name.
    - `passes_total` integer, required: Dates this holder's season covered.
    - `passes_attended` integer, required: How many they joined.
    - `passes_missed` integer, required: How many they did not.
    - `successor_plan_id` string, uuid, nullable, required: The next season, if the creator linked one. `null` means there is no follow-on.

## Acknowledgement `2XX`

Your endpoint acknowledged the delivery. Any 2xx status within 30 seconds marks it delivered; the response body is ignored.

## Other responses

- `default`: Any other status, a connection failure, or no answer within 30 seconds counts as a failed attempt. The delivery is retried 8 times, after 10 seconds, 30 seconds, 2 minutes, 10 minutes, 1 hour, 6 hours, 1 day, 3 days; the last failure dead-letters it, and it can be retried from the dashboard or `POST /v1/webhook-deliveries/{delivery}/retry`. After 20 consecutive failures the endpoint is paused until it is resumed.

---

[API](https://skmtc.dev/memberpass/apis/subscriby-rest-api.md) · [All operations](https://skmtc.dev/memberpass/apis/subscriby-rest-api/llms.txt) · [OpenAPI document](https://skmtc.dev/memberpass/apis/subscriby-rest-api/revisions/59c4df91d764?raw)