Error 500 when creating All Events webhook with attendee.checked_in

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Pedro Ruiz

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Sep 8, 2025, 11:34:51 AMSep 8
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Hello!

I am trying to create a webhook for attendee.checked_in for all our events but I am getting a 500 error.

Things I tried creating and worked:
  • Webhooks without attendee.checked_in for all events
  • Webhook for attendee.checked_in for a specific event

The only case it doesn't seem to work is checked_in + all events.

This is the request I am sending (of course the token is sent in the headers):
https://www.eventbriteapi.com/v3/organizations/<deducted>/webhooks/
body: {
  "endpoint_url": "<deducted>",
  "actions": "attendee.checked_in",
  "event_id": ""
}

Response:
{ "status_code": 500, "error_description": "The server encountered an internal error.", "error": "INTERNAL_ERROR" }
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