GET /api/v2/user/contests

Authorization: Bearer <jwt_access_token>

{
  "success": true,
  "data": {
    "items": [
      {
        "id": "contest-uuid-1",
        "title": "Summer Web3 Championship 2026",
        "description": "Test your knowledge of Solidity & Layer 2 solutions.",
        "entryFeeGems": 50,
        "prizePoolGems": 5000,
        "startsAt": "2026-08-25T10:00:00.000Z",
        "endsAt": "2026-08-25T18:00:00.000Z",
        "participantCount": 142,
        "userStatus": {
          "hasJoined": true,
          "hasStarted": false,
          "hasCompleted": false,
          "score": null,
          "rank": null
        }
      }
    ],
    "total": 1,
    "page": 1,
    "limit": 10
  }
}

POST /api/v2/user/contests/:id/join

Authorization: Bearer <jwt_access_token>

{
  "success": true,
  "message": "Successfully joined contest"
}

POST /api/v2/user/contests/:id/submit

{
  "answers": [
    { "questionId": "q-101", "selectedOption": 2 },
    { "questionId": "q-102", "selectedOption": 0 }
  ],
  "timeTakenSeconds": 185
}