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The website field on a watchlist item names the platform to monitor. These keys are separate from the Live Availability platform keys on Supported platforms — the watchlist covers a much wider set, and the two vocabularies do not overlap in spelling (ticketmaster here, tm there).

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website is not an allowlist

Any string is accepted. For the platforms listed below, event is validated against that platform’s — and often that region’s — id format, and a mismatch is rejected with 400. For anything else, validation is skipped and the item is stored exactly as sent.
A typo in website does not return an error. It creates a watchlist item that nothing will ever monitor, and it will sit in your watchlist looking healthy. Check the value against this page before you create items programmatically.

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Platforms with a validated event format

Current as of 17 September 2026.
  • allaccess
  • artist_new_events
  • atleticomadrid
  • axs
  • banquetrecords
  • billetterie.accorarena
  • billetterie.adidasarena
  • billetterie.aegpresents
  • billetterie.bouffesdunord
  • billetterie.fff
  • billetterie.ffr
  • billetterie.parisladefense
  • blueticket
  • bo26.myticket.de
  • dice
  • eticketing
  • eticketing-uk
  • etihadarena
  • etix
  • eventim
  • eventim_artist_new_events
  • eventim_venue_new_events
  • evenue.net
  • f1.abudhabi
  • f1.tickets
  • fanki
  • fansale
  • feverup
  • fifa
  • funcode
  • gpcanada
  • gpmonaco
  • gpmonza
  • gpsingapore
  • jazzopen-stuttgart
  • laoreja
  • meo-blueticket
  • milano-cortina
  • mlb.tickets
  • moviestararena
  • nfl-tmtickets
  • nhmpe.seetickets
  • onkelz.myticket.de
  • paylogic
  • platinumlist
  • psg
  • royalhall
  • seatgeek
  • seatpick
  • seetickets
  • sport.ticketone
  • stubhub
  • ticketek
  • ticketera
  • ticketmaster
  • ticketpoint
  • ticketportal
  • tickets.oneboxtds
  • tickets.uefa
  • ticketswap
  • ticketweb
  • tickpick
  • twickets
  • venue_new_events
  • viagogo
  • vivatickets
  • wiederverkaufsplattform
  • wienticket
  • ztwen-jussyun
If you get the format wrong, the 400 tells you what was expected:
The Example is a real, valid id or URL for that platform — copy its shape.

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Discovery monitors

Four keys do not watch a single event. They watch an artist or venue page and fire when new events are announced there, which is how you catch an on-sale before you know the event id. Everything else about the item works normally — the filters, task_active, and the notifications the Notifications API delivers.

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Retired aliases

“Ticketmaster Early” was merged into Ticketmaster on 8 September 2026. The old keys are still accepted on create and silently stored as ticketmaster: ticketmaster_preload · ticketmaster_early · ticketmaster early · tm_preload · tm Existing integrations keep working unchanged. New ones should send ticketmaster.
Because the alias is rewritten on the way in, an item created with tm comes back from GET /watchlist with website: "ticketmaster". That is not a bug — do not treat it as a failed write.

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Filters are not supported everywhere

A filter that the target website and region combination does not support is dropped rather than rejected: the create or update succeeds, the stored item simply has that filter unset, and the response lists what was dropped in ignored_fields.
If a filter you set appears to have disappeared, check ignored_fields on the response that created or updated the item.