December 16th, 2025

API Update: Include Custom Registration Question Answers When Creating Attendees

You can now include answers to custom registration questions when creating attendees via the API. This improvement streamlines attendee imports, allowing you to send complete registration data (including question responses) in a single call. Ideal for syncing data from external forms or CRMs directly into HeySummit.

What’s New

  • Support for passing question_id and answer pairs via a new questions array when creating attendees through the API.

To locate the question_id, go to Event Settings > Registration Questions and click the # button next to the relevant question.

For full API documentation, visit: HeySummit API v2 Docs