starknet_estimateMessageFee RPC Method

Parameters

MSG_FROM_L1

object

REQUIRED

The Message from L1 object which contains the following fields:

from_address

string

REQUIRED

The address of the L1 contract sending the message

to_address

string

REQUIRED

The target L2 address the message is sent to

entry_point_selector

string

REQUIRED

The selector of the l1_handler in invoke in the target contract

payload

array

REQUIRED

The payload of the message

block_id

string

REQUIRED

The hash of the requested block, the block number (height) of the requested block, or a block tag (latest or pending)

Returns

result

array

Array of fee estimation results

l1_data_gas_consumed

string

The amount of Layer 1 data gas consumed by the transaction

l1_data_gas_price

string

The price per unit of Layer 1 data gas (in WEI)

l1_gas_consumed

string

The amount of Layer 1 execution gas consumed by the transaction

l1_gas_price

string

The price per unit of Layer 1 execution gas (in WEI)

l2_gas_consumed

string

The amount of Layer 2 gas consumed by the transaction

l2_gas_price

string

The price per unit of Layer 2 gas (in WEI)

overall_fee

string

The total estimated fee for the transaction in WEI, computed using all gas consumed and respective prices

unit

string

The unit in which the overall fee is expressed

Request

# Note: You can specify Starknet version in the URL path
# Example: /rpc/v0_8 for version 0.8, /rpc/v0_6 for version 0.6
curl --location 'https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_8' \
--header 'accept: application/json' \
--header 'content-type: application/json' \
--data '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "starknet_estimateMessageFee",
    "params": [
        {
            "from_address": "FROM_ADDRESS",
            "to_address": "TO_ADDRESS",
            "entry_point_selector": "ENTRY_POINT_SELECTOR",
            "payload": []
        },
        "latest"
    ]
}'

// Note: You can specify Starknet version in the URL path
// Example: /rpc/v0_8 for version 0.8, /rpc/v0_6 for version 0.6
const myHeaders = new Headers();
myHeaders.append("accept", "application/json");
myHeaders.append("content-type", "application/json");

const raw = JSON.stringify({
  "id": 1,
  "jsonrpc": "2.0",
  "method": "starknet_estimateMessageFee",
  "params": [
    {
      "from_address": "FROM_ADDRESS",
      "to_address": "TO_ADDRESS",
      "entry_point_selector": "ENTRY_POINT_SELECTOR",
      "payload": []
    },
    "latest"
  ]
});

const requestOptions = {
  method: "POST",
  headers: myHeaders,
  body: raw,
  redirect: "follow"
};

fetch("https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_8", requestOptions)
  .then((response) => response.text())
  .then((result) => console.log(result))
  .catch((error) => console.error(error));

# Note: You can specify Starknet version in the URL path
# Example: /rpc/v0_8 for version 0.8, /rpc/v0_6 for version 0.6
import requests
import json

url = "https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_8"

payload = json.dumps({
  "id": 1,
  "jsonrpc": "2.0",
  "method": "starknet_estimateMessageFee",
  "params": [
    {
      "from_address": "FROM_ADDRESS",
      "to_address": "TO_ADDRESS",
      "entry_point_selector": "ENTRY_POINT_SELECTOR",
      "payload": []
    },
    "latest"
  ]
})
headers = {
  'accept': 'application/json',
  'content-type': 'application/json'
}

response = requests.request("POST", url, headers=headers, data=payload)

print(response.text)

# Note: You can specify Starknet version in the URL path
# Example: /rpc/v0_8 for version 0.8, /rpc/v0_6 for version 0.6
require "uri"
require "json"
require "net/http"

url = URI("https://docs-demo.strk-mainnet.quiknode.pro/rpc/v0_8")

http = Net::HTTP.new(url.host, url.port);
request = Net::HTTP::Post.new(url)
request["accept"] = "application/json"
request["content-type"] = "application/json"
request.body = JSON.dump({
  "id": 1,
  "jsonrpc": "2.0",
  "method": "starknet_estimateMessageFee",
  "params": [
    {
      "from_address": "FROM_ADDRESS",
      "to_address": "TO_ADDRESS",
      "entry_point_selector": "ENTRY_POINT_SELECTOR",
      "payload": []
    },
    "latest"
  ]
})


response = http.request(request)
puts response.read_body

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