pass_series.seats_exhausted
A capped season ticket sold its last seat.
When this fires
A purchase took the last seat on a series with a Seat Limit. The season is now sold out: its portal card reads Sold out, but a checkout already in flight is not blocked; the seat cap is only claimed once the payment lands, so a late buyer can pay, be given nothing, and be told to ask the organiser for a refund. Treat this event as the cue to stop promoting the season yourself.
Fires at the transition, once. An endpoint told this on every subsequent read would be told a fact rather than an event.
Caveats
- Sold out is not permanent. A seat is released when a holder cancels or is refunded, and the series goes back on sale, at which point a later purchase can exhaust it again and emit this a second time. Treat it as a state change, not a terminal state.
- Only holders who actually hold the series consume a seat. A checkout that was started and abandoned, or a payment that never cleared, does not.
- A series with no Seat Limit never emits this at all.
- Raising the cap does not emit anything. If you are tracking availability, read
seats_remainingon the plan rather than inferring it from this event alone.
Related events
pass_series.purchased: every purchase, each carryingseats_remaining.plan.deactivated: the series coming off sale for good once its dates have run.
Header Parameters
t=<unix seconds>,v1=<hex>: the HMAC-SHA256 of "<t>.<raw body>" under the endpoint's secret. Verify it before acting, and refuse a t more than 300 seconds from now. During a secret rotation a v0= signature under the previous secret may precede v1=.
The event's ULID, bare. The envelope's id is the same ULID prefixed evt_, so strip the prefix before comparing. Deduplicate on it: a retry carries the same id.
The event name, the same as the envelope's type.
Always application/json.
Always Subscriby-Webhooks/1.0.
Request Body
application/json
The signed JSON envelope posted to your endpoint.
TypeScript Definitions
Use the request body type in TypeScript.
The envelope every event is delivered in.
Response Body
Example Requests
/pass_series.seats_exhaustedHow is this guide?