starknet_simulateTransactions

Simulates multiple transactions and returns the transactions trace for the v0.4 RPC version

The starknet_simulateTransactions command allows you to simulate the execution of multiple transactions on the StarkNet network and receive simulation results for each transaction.

Parameters

• transactions: A list of transactions to be simulated. Each transaction should include the recipient's address, data, nonce, and signature.

• block_id: The block tag specifying the block to be used for simulation.

• simulation_flags: A set of flags used for simulation (E.g. "SKIP_VALIDATE" or "SKIP_EXECUTE")

Returns

An array of results, each containing the simulation result for a specific transaction.

Example Request and Result for starknet_simulateTransaction

Request

curl https://starknet-mainnet.blastapi.io/<project-id> \
-X POST \
-H "Content-Type: application/json" \
-d '{
   "jsonrpc": "2.0",
   "method": "starknet_simulateTransactions",
   "params": {
      "transactions": [
         {
            "to": "0xCONTRACT_ADDRESS_1",
            "data": "0xTRANSACTION_DATA_1",
            "nonce": "0xNONCE_1",
            "signature": "0xSIGNATURE_1"
         },
         {
            "to": "0xCONTRACT_ADDRESS_2",
            "data": "0xTRANSACTION_DATA_2",
            "nonce": "0xNONCE_2",
            "signature": "0xSIGNATURE_2"
         }
      ],
      "block_id": "latest",
      "simulation_flags": ["flag1", "flag2"]
   },
   "id": 1
}'

Result

{
   "result": [
      {
         "transaction_trace": {
            // Trace details for the first transaction
         },
         "fee_estimation": {
            // Fee estimation for the first transaction
         }
      },
      {
         "transaction_trace": {
            // Trace details for the second transaction
         },
         "fee_estimation": {
            // Fee estimation for the second transaction
         }
      }
   ],
   "id": 1
}