simulateTransaction

simulateTransaction — Simulate a transaction

post

https://public.rpc.solanavibestation.comhttps://lite.rpc.solanavibestation.comhttps://basic.rpc.solanavibestation.comhttps://ultra.rpc.solanavibestation.comhttps://elite.rpc.solanavibestation.comhttps://epic.rpc.solanavibestation.comhttps://basic.swqos.solanavibestation.comhttps://ultra.swqos.solanavibestation.comhttps://elite.swqos.solanavibestation.com

/

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. Parameters

1. transaction (required) — Encoded transaction (signed or unsigned, depending on sigVerify).

2. config (optional) — Optional configuration object. Every field is optional; omit the entire object to use defaults.

Authorizations

AuthHeaderURLParameter

AuthorizationstringOptional

Pass Authorization: <api-key> on each request.

Body

application/json

jsonrpcstring · enumRequired

JSON-RPC protocol version.

Example: 2.0Possible values:

idone ofRequired

Request identifier echoed back in the response.

Example: 1

stringOptional

or

integerOptional

methodstring · enumRequired

Must be simulateTransaction.

Example: simulateTransactionPossible values:

Responses

200

Successful simulateTransaction response.

application/json

Base envelope of every JSON-RPC 2.0 response.

jsonrpcstring · enumRequiredExample: 2.0Possible values:

idone ofRequired

Echoed request id.

Example: 1

stringOptional

or

integerOptional

401

Authentication required or invalid.

application/json

403

Insufficient permissions for the request.

application/json

429

Rate limit exceeded for this tier.

application/json

500

Unexpected server error.

application/json

post

/

cURLPythonJavaScriptRust

curl -X POST https://public.rpc.solanavibestation.com \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "simulateTransaction",
    "params": [
      "4hXTCkRzt9WyecNzV1XPgCDfGAZzQKNxLXgynz5QDuWWPSAZBZSHptvWRL3BjCvzUXRdKvHL2b7yGrRQcWyaqsa",
      {
        "sigVerify": false,
        "replaceRecentBlockhash": true
      }
    ]
  }'

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "context": {
      "slot": 416997240,
      "apiVersion": "3.1.10"
    },
    "value": {
      "err": null,
      "logs": [
        "Program 11111111111111111111111111111111 invoke [1]",
        "Program 11111111111111111111111111111111 success"
      ],
      "accounts": null,
      "unitsConsumed": 200,
      "returnData": null
    }
  }
}