simulateTransaction

simulateTransaction RPC Method

post

Simulates sending a transaction to get the effects that would occur if the transaction was committed. The simulation runs against the current state of the blockchain and provides detailed information including logs, account changes, compute units consumed, and any errors that would occur during execution.

Authorizations

AuthHeaderURLParameter

Body

jsonrpcstring · enumRequired

JSON-RPC protocol version

Example: 2.0Possible values:

idone ofRequired

Request identifier that will be returned in the response

Example: 1

stringOptional

or

numberOptional

methodstring · enumRequired

The RPC method name

Example: simulateTransactionPossible values:

Responses

200

Successful Response

application/json

401

Unauthorized

text/plain

403

Forbidden

text/plain

429

Too Many Requests

text/plain

500

Internal Server Error

text/plain

post

cURLSolana Kitweb3.jsRust

curl -X POST https://public.rpc.solanavibestation.com \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "simulateTransaction",
    "params": [
      "AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAEDArczbMia1tLmq7zz4DinMNN0pJ1JtLdqIJPUw3YrGCzYAMHBsgN27lcgB6H2WQvFgyZuJYHa46puOQo9yQ8CVQbd9uHXZaGT2cvhRs7reawctIXtX1s3kTqM9YV+/wCp20C7Wj2aiuk5TReAXo+VTVg8QTHjs0UjNMMKCvpzZ+ABAgEBARU=",
      {
        "encoding": "base58",
        "commitment": "processed",
        "sigVerify": false,
        "replaceRecentBlockhash": true
      }
    ]
  }'

{
  "jsonrpc": "2.0",
  "result": {
    "context": {
      "apiVersion": "2.0.15",
      "slot": 123456789
    },
    "value": {
      "err": null,
      "logs": [
        "Program 11111111111111111111111111111111 invoke [1]",
        "Program 11111111111111111111111111111111 success"
      ],
      "accounts": null,
      "unitsConsumed": 150,
      "returnData": null
    }
  },
  "id": 1
}