How to restrict session visibility by participant category

Use this guide when you need to limit a session so it is only visible to participants in specific categories — for example, restricting a session to VIP attendees or a specific buyer group.

What you'll need before starting

What you need	Where to get it
Participant category IDs	`GET /api/v2/account/getCategories?event_id=`

Request — restrict to specific categories

Bash

curl -X POST "https://your-event-domain.com/api/v2/sessions/set" \
  -H "Authorization: Bearer your_api_key_here" \
  -F "event_id=7" \
  -F "id=42" \
  -F "visibleToCategories[]=6" \
  -F "visibleToCategories[]=8"

Request — make visible to all (remove restrictions)

Bash

curl -X POST "https://your-event-domain.com/api/v2/sessions/set" \
  -H "Authorization: Bearer your_api_key_here" \
  -F "event_id=7" \
  -F "id=42" \
  -F "visibleToCategories[]="

Notes

When visibleToCategories is null or empty, the session is visible to all participants
Passing visibleToCategories[]= with an empty value removes all restrictions
Category IDs are event-specific — always retrieve them via GET /api/v2/account/getCategories for the correct event