Submit Transaction

POST /api/v2/submit

Description

Submits a single signed transaction to NextBlock.

Request

• URL: /api/v2/submit

• Method: POST

• Headers:

  • Content-Type: application/json

  • Authorization: <token>

Request Body

{
  "transaction": {
    "content": "base64-encoded-signed-transaction"
  },
  "skipPreFlight": true,
  "frontRunningProtection": false,
  "disableRetries": false,
  "revertOnFail": false,
  "snipeTransaction": false
}

Notes

• transaction.content must be the base64-encoded bytes of a fully signed Solana transaction.

• The optional flags above are available on the HTTP and gRPC submission paths.

• If you use QUIC Transaction Submission, these flags are not available. QUIC accepts only the raw signed transaction bytes.

Response

Success (200 OK)

{
  "signature": "tx-signature",
  "uuid": "jito-bundle-uuid"
}

Error (400 Bad Request)

{
  "code": 2,
  "message": "fee too low; transaction contains low tip",
  "details": []
}