starknet_estimateMessageFee

estimate the L2 fee of a message sent on L1

Parameters:

OBJECT - The transaction call object

• from_address - The address of the L1 contract sending the message

• to_address -The target L2 address the message is sent to

• entry_point_selector-The selector of the l1_handler to invoke in the target contract

• payload- The payload of the message

BLOCK_PARAM - Expected one of block_number, block_hash, latest, pending

Returns:

the fee estimation

Example:

// Request
curl https://starknet.blockpi.network/v1/rpc/your-rpc-key -X POST -H "Content-Type: application/json" 
--data '{
  "method": "starknet_estimateMessageFee",
  "params": [
    "latest",
    {
      "from_address": "0xAbCdEf0123456789aBcDeF0123456789AbCdEf01",
      "to_address": "0x044e5b3f0471a26bc749ffa1d8dd8e43640e05f1b33cf05cef6adee6f5b1b4cf",
      "entry_point_selector": "0x00000"
    }
  ]
}'

// Result
{

}