Look up participant by check-in token

GET/manage/events/:eventId/entries/by-checkin-token

Look up a registration by the check-in token embedded in the participant's QR code, for use in a reception app. Requires the participantsRead permission.

Auth	Login required

Path parameters

eventIdstringrequired

Event ID or slug.

Query parameters

tokenstringrequired

Check-in token.

Notes

`email` is removed for OAuth access tokens, but other participant profile data such as birthDate, gender, location and organization memberships is returned as-is.

curl https://api.4s.link/manage/events/EVENT_ID/entries/by-checkin-token \
  -H "Authorization: Bearer 4s_at_..."

Example response
{
  "id": "en1a2b3-...",
  "state": "UNUSED",
  "checkInToken": "abc123",
  "createdAt": "2026-08-18T00:00:00.000Z",
  "ticket": { "id": "t1a2b3c4-...", "name": "一般チケット" },
  "user": {
    "id": "a1b2c3d4-...",
    "slug": "taro",
    "firstName": "太郎",
    "lastName": "山田",
    "avatarUrl": "https://.../avatar.png"
  }
}