simulateTransaction

Simulate sending a transaction

simulateTransaction

post

Body

jsonrpcstring · enumoptional

The JSON-RPC protocol version.

Example: 2.0

Options: 2.0

idstringoptional

A unique identifier for the request.

Example: 1

methodstring · enumoptional

The name of the RPC method to invoke.

Example: simulateTransaction

Options: simulateTransaction

paramsone of[]optional

Parameters for simulating a transaction.

Responses

application/jsonexample

application/json

application/json

application/json

cURL

JavaScript

Python

HTTP

cURL

curl -L \
  --request POST \
  --url 'https://mainnet.helius-rpc.com/?api-key=<api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "simulateTransaction",
    "params": [
      "AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCp20C7Wj2aiuk5TReAXo+VTVg8QTHjs0UjNMMKCvpzZ+ABAgEBARU=",
      {
        "encoding": "base64"
      }
    ]
  }'

200

400

401

500

200

application/json

example

application/json

{
  "jsonrpc": "2.0",
  "id": "1",
  "result": {
    "context": {
      "slot": 218
    },
    "value": {
      "err": null,
      "logs": [
        "Program 83astBRguLMdt2h5U1Tpdq5tjFoJ6noeGwaY3mDLVcri invoke [1]"
      ],
      "accounts": [
        {
          "lamports": 5000,
          "owner": "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA"
        }
      ],
      "returnData": {
        "programId": "83astBRguLMdt2h5U1Tpdq5tjFoJ6noeGwaY3mDLVcri",
        "data": [
          "Kg=="
        ],
        "computeUnitsConsumed": 2366
      }
    }
  }
}

Successfully simulated the transaction.