challenge.joined Coming soon

EVENTChallenges

Fires when a member is enrolled in a challenge: they join an opt-in challenge, they're enrolled automatically, or you enroll them with POST /v1/challenges/{id}/enrollments.

data.object is the member's challenge progress plus member_id.

Event JSON

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20{
  "id": "4c8f2a6e-1d9b-4e37-a5c0-8b2e6f1d9a43",
  "type": "challenge.joined",
  "created_at": "2026-11-09T14:30:12Z",
  "api_version": "v1",
  "livemode": true,
  "brand_id": "e5a1c7d9-2f4b-4c8e-a3d6-8b0f1e9c2a57",
  "data": {
    "object": {
      "challenge_id": "4e7a1d9c-2f5b-4c83-a6e0-9b3d8f1c5a72",
      "member_id": "3f2b8c1e-6d0a-4e7b-9f3c-2a1d5e8b7c40",
      "status": "enrolled",
      "progress": { "current": 0, "target": 3, "unit": "visits", "periods": [] },
      "window_ends_at": "2026-11-16T06:00:00Z",
      "completed_at": null,
      "reward_wallet_item_id": null
    },
    "previous_attributes": {}
  }
}