POST /v1/tx/submit

Submits a signed transaction created by one of the build endpoints.

• Auth: required (see API Authentication)
• Errors: see Errors

HTTP

• Method: POST
• Path: /v1/tx/submit

Headers

Authorization: Bearer api_your_key_here
Content-Type: application/json

Body

{
  "submissionToken": "txn_...",
  "signedTransaction": "BASE64_WIRE_SIGNED_TRANSACTION"
}

Fields

• submissionToken (string, required): ties this submission to the server-side stored unsigned transaction
• signedTransaction (string, required): base64 wire signed transaction

Response

{
  "success": true,
  "data": {
    "signature": "5Y...",
    "status": "confirmed",
    "slot": 321234567,
    "platform": "pump_fun",
    "inputMint": "So11111111111111111111111111111111111111111",
    "outputMint": "TOKEN_MINT",
    "tradeResult": {
      "inputAmount": 0.002,
      "outputAmount": 70598.459309
    },
    "estimates": {
      "inputAmount": 0.002,
      "outputAmount": 70598.459309,
      "priceImapct": 0.000468
    },
    "priorityCost": 0.000005125
  }
}

Notes

• The API validates that the signed transaction’s message bytes match the originally-built message.