POST /duel/solana/join/sign-tx

URL: https://xapi.duelduck.com/duel/solana/join/sign-tx Creates a signed transaction that allows a user to join an app-based crypto prediction.

Name	Type	Header	Required	Description
Authorization	string	Authorization	yes	Authorization Bearer token

Prediction join request. Type: object. Request content type: application / json . Body:

{
  "answer": 0,
  "duel_id": "string",
  "external_source": "string",
  "invited_by": "string",
  "paid_price": 0
}

Response content type: application / json .

Signed transaction returned successfully.

{
  "tx": "string"
}

Invalid request data.

{
  "message": "string",
  "status": 0
}

Unauthorized - Invalid or missing claims.

{
  "message": "string",
  "status": 0
}

Internal server error.

{
  "message": "string",
  "status": 0
}