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POST
simulateBundle
curl --request POST \
  --url 'https://mainnet.helius-rpc.com/?api-key=' \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "id": "1",
  "method": "simulateBundle",
  "params": [
    {
      "encodedTransactions": [
        "5rqF8aHfs9JyEtKTvND6z8RgBtYxQwZLndS1kzHxV7D3kWm9VoYRzFtsP3qra5bM8rGhC v82LYo8fZpQoyQmtN1D9vxG2uEsMhV7jB4KdADRgxMXn5kRJzLZPt2LrPSmcUhfEmeQa7X rKeR9FHdKcXxZ1Hdq68oBr2AaPpTMuL85KDCt",
        "5rqF8aHfs9JyEtKTvND6z8RgBtYxQwZLndS1kzHxV7D3kWm9VoYRzFtsP3qra5bM8rGhC v82LYo8fZpQoyQmtN1D9vxG2uEsMhV7jB4KdADRgxMXn5kRJzLZPt2LrPSmcUhfEmeQa7X rKeR9FHdKcXxZ1Hdq68oBr2AaPpTMuL85KDCt"
      ]
    },
    {
      "preExecutionAccountsConfigs": [
        {
          "addresses": [
            "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA"
          ],
          "encoding": "base64"
        },
        null
      ],
      "postExecutionAccountsConfigs": [
        {
          "addresses": [
            "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA"
          ],
          "encoding": "base64"
        },
        null
      ],
      "skipSigVerify": true,
      "simulationBank": {
        "commitment": {
          "commitment": "processed"
        }
      },
      "transactionEncoding": "base64",
      "replaceRecentBlockhash": false
    }
  ]
}
'
{
  "jsonrpc": "2.0",
  "id": "1",
  "result": {
    "context": {
      "apiVersion": "2.30.10",
      "slot": 373999891
    },
    "value": {
      "summary": "succeeded",
      "transactionResults": [
        {
          "err": null,
          "logs": [
            "Program ComputeBudget111111111111111111111111111111 invoke [1]",
            "Program ComputeBudget111111111111111111111111111111 success",
            "Program ComputeBudget111111111111111111111111111111 invoke [1]",
            "Program ComputeBudget111111111111111111111111111111 success",
            "Program 11111111111111111111111111111111 invoke [1]",
            "Program 11111111111111111111111111111111 success"
          ],
          "preExecutionAccounts": [
            {
              "data": [
                "",
                "base64"
              ],
              "executable": true,
              "lamports": 5299606121,
              "owner": "BPFLoader2111111111111111111111111111111111",
              "rentEpoch": 324,
              "space": 134080
            }
          ],
          "postExecutionAccounts": [
            {
              "data": [
                "",
                "base64"
              ],
              "executable": true,
              "lamports": 5299606121,
              "owner": "BPFLoader2111111111111111111111111111111111",
              "rentEpoch": 324,
              "space": 134080
            }
          ],
          "returnData": {
            "programId": "Fx9Hp1gLzYj6Ryc4GaVoq2v6t4NxWg3GT1kP7quzZbVQ",
            "data": "AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAASjD8="
          },
          "unitsConsumed": 450
        },
        {
          "err": null,
          "logs": [
            "Program ComputeBudget111111111111111111111111111111 invoke [1]",
            "Program ComputeBudget111111111111111111111111111111 success",
            "Program ComputeBudget111111111111111111111111111111 invoke [1]",
            "Program ComputeBudget111111111111111111111111111111 success",
            "Program 11111111111111111111111111111111 invoke [1]",
            "Program 11111111111111111111111111111111 success"
          ],
          "postExecutionAccounts": null,
          "preExecutionAccounts": null,
          "returnData": null,
          "unitsConsumed": 450
        }
      ]
    }
  }
}

Authorizations

​
api-key
string
query
required

Your Helius API key. You can get one for free in the dashboard.

Body

application/json
​
jsonrpc
enum<string>
default:2.0

The JSON-RPC protocol version.

Available options:
2.0
Example:

"2.0"

​
id
string
default:1

A unique identifier for the request.

Example:

"1"

​
method
enum<string>
default:simulateBundle

The name of the RPC method to invoke.

Available options:
simulateBundle
Example:

"simulateBundle"

​
params
object[]

Parameters for simulating a JITO bundle.

Response

Successfully simulated the bundle.

​
jsonrpc
enum<string>

The JSON-RPC protocol version.

Available options:
2.0
Example:

"2.0"

​
id
string

Identifier matching the request.

Example:

"1"

​
result
object

Result of the simulated bundle.