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POST
/
365cf697a3ad6d950b4c4a911e2e4f4d
starknet_estimateFee
curl --request POST \
  --url https://starknet-mainnet.core.chainstack.com/365cf697a3ad6d950b4c4a911e2e4f4d \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 0,
  "jsonrpc": "2.0",
  "method": "starknet_estimateFee",
  "params": {
    "request": [
      {
        "type": "INVOKE",
        "max_fee": "0xb3a2f1ab6d632",
        "version": "0x1",
        "signature": [
          "0x54c2201c7b9021777389e208e28eafc67e4ba1f1aa7016a1123b61c6ff79c29",
          "0x58c2d97614e5abfd9668b314f344c945d16ea154cb32a7b08b4445204f1f1d3"
        ],
        "sender_address": "0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10",
        "calldata": [
          "0x3",
          "0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7",
          "0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c",
          "0x3",
          "0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff",
          "0x984e103a8acd6",
          "0x0",
          "0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8",
          "0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c",
          "0x3",
          "0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff",
          "0x4c4b40",
          "0x0",
          "0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff",
          "0x2f0b3c5710379609eb5495f1ecd348cb28167711b73609fe565a72734550354",
          "0xe",
          "0x569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10",
          "0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7",
          "0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8",
          "0x1f4",
          "0xa76cc",
          "0xa7b5e",
          "0x984e103a8acd6",
          "0x0",
          "0x4c4b40",
          "0x0",
          "0x9542431aa6bf1",
          "0x0",
          "0x4ac4a0",
          "0x0"
        ],
        "nonce": "0x51"
      }
    ],
    "block_id": {
      "block_number": 385940
    }
  }
}
'
import requests

url = "https://starknet-mainnet.core.chainstack.com/365cf697a3ad6d950b4c4a911e2e4f4d"

payload = {
    "id": 0,
    "jsonrpc": "2.0",
    "method": "starknet_estimateFee",
    "params": {
        "request": [
            {
                "type": "INVOKE",
                "max_fee": "0xb3a2f1ab6d632",
                "version": "0x1",
                "signature": ["0x54c2201c7b9021777389e208e28eafc67e4ba1f1aa7016a1123b61c6ff79c29", "0x58c2d97614e5abfd9668b314f344c945d16ea154cb32a7b08b4445204f1f1d3"],
                "sender_address": "0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10",
                "calldata": ["0x3", "0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7", "0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c", "0x3", "0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff", "0x984e103a8acd6", "0x0", "0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8", "0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c", "0x3", "0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff", "0x4c4b40", "0x0", "0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff", "0x2f0b3c5710379609eb5495f1ecd348cb28167711b73609fe565a72734550354", "0xe", "0x569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10", "0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7", "0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8", "0x1f4", "0xa76cc", "0xa7b5e", "0x984e103a8acd6", "0x0", "0x4c4b40", "0x0", "0x9542431aa6bf1", "0x0", "0x4ac4a0", "0x0"],
                "nonce": "0x51"
            }
        ],
        "block_id": { "block_number": 385940 }
    }
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    id: 0,
    jsonrpc: '2.0',
    method: 'starknet_estimateFee',
    params: {
      request: [
        {
          type: 'INVOKE',
          max_fee: '0xb3a2f1ab6d632',
          version: '0x1',
          signature: [
            '0x54c2201c7b9021777389e208e28eafc67e4ba1f1aa7016a1123b61c6ff79c29',
            '0x58c2d97614e5abfd9668b314f344c945d16ea154cb32a7b08b4445204f1f1d3'
          ],
          sender_address: '0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10',
          calldata: [
            '0x3',
            '0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7',
            '0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c',
            '0x3',
            '0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff',
            '0x984e103a8acd6',
            '0x0',
            '0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8',
            '0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c',
            '0x3',
            '0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff',
            '0x4c4b40',
            '0x0',
            '0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff',
            '0x2f0b3c5710379609eb5495f1ecd348cb28167711b73609fe565a72734550354',
            '0xe',
            '0x569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10',
            '0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7',
            '0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8',
            '0x1f4',
            '0xa76cc',
            '0xa7b5e',
            '0x984e103a8acd6',
            '0x0',
            '0x4c4b40',
            '0x0',
            '0x9542431aa6bf1',
            '0x0',
            '0x4ac4a0',
            '0x0'
          ],
          nonce: '0x51'
        }
      ],
      block_id: {block_number: 385940}
    }
  })
};

fetch('https://starknet-mainnet.core.chainstack.com/365cf697a3ad6d950b4c4a911e2e4f4d', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://starknet-mainnet.core.chainstack.com/365cf697a3ad6d950b4c4a911e2e4f4d",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'id' => 0,
    'jsonrpc' => '2.0',
    'method' => 'starknet_estimateFee',
    'params' => [
        'request' => [
                [
                                'type' => 'INVOKE',
                                'max_fee' => '0xb3a2f1ab6d632',
                                'version' => '0x1',
                                'signature' => [
                                                                '0x54c2201c7b9021777389e208e28eafc67e4ba1f1aa7016a1123b61c6ff79c29',
                                                                '0x58c2d97614e5abfd9668b314f344c945d16ea154cb32a7b08b4445204f1f1d3'
                                ],
                                'sender_address' => '0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10',
                                'calldata' => [
                                                                '0x3',
                                                                '0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7',
                                                                '0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c',
                                                                '0x3',
                                                                '0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff',
                                                                '0x984e103a8acd6',
                                                                '0x0',
                                                                '0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8',
                                                                '0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c',
                                                                '0x3',
                                                                '0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff',
                                                                '0x4c4b40',
                                                                '0x0',
                                                                '0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff',
                                                                '0x2f0b3c5710379609eb5495f1ecd348cb28167711b73609fe565a72734550354',
                                                                '0xe',
                                                                '0x569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10',
                                                                '0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7',
                                                                '0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8',
                                                                '0x1f4',
                                                                '0xa76cc',
                                                                '0xa7b5e',
                                                                '0x984e103a8acd6',
                                                                '0x0',
                                                                '0x4c4b40',
                                                                '0x0',
                                                                '0x9542431aa6bf1',
                                                                '0x0',
                                                                '0x4ac4a0',
                                                                '0x0'
                                ],
                                'nonce' => '0x51'
                ]
        ],
        'block_id' => [
                'block_number' => 385940
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://starknet-mainnet.core.chainstack.com/365cf697a3ad6d950b4c4a911e2e4f4d"

	payload := strings.NewReader("{\n  \"id\": 0,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"starknet_estimateFee\",\n  \"params\": {\n    \"request\": [\n      {\n        \"type\": \"INVOKE\",\n        \"max_fee\": \"0xb3a2f1ab6d632\",\n        \"version\": \"0x1\",\n        \"signature\": [\n          \"0x54c2201c7b9021777389e208e28eafc67e4ba1f1aa7016a1123b61c6ff79c29\",\n          \"0x58c2d97614e5abfd9668b314f344c945d16ea154cb32a7b08b4445204f1f1d3\"\n        ],\n        \"sender_address\": \"0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10\",\n        \"calldata\": [\n          \"0x3\",\n          \"0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7\",\n          \"0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c\",\n          \"0x3\",\n          \"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff\",\n          \"0x984e103a8acd6\",\n          \"0x0\",\n          \"0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8\",\n          \"0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c\",\n          \"0x3\",\n          \"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff\",\n          \"0x4c4b40\",\n          \"0x0\",\n          \"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff\",\n          \"0x2f0b3c5710379609eb5495f1ecd348cb28167711b73609fe565a72734550354\",\n          \"0xe\",\n          \"0x569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10\",\n          \"0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7\",\n          \"0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8\",\n          \"0x1f4\",\n          \"0xa76cc\",\n          \"0xa7b5e\",\n          \"0x984e103a8acd6\",\n          \"0x0\",\n          \"0x4c4b40\",\n          \"0x0\",\n          \"0x9542431aa6bf1\",\n          \"0x0\",\n          \"0x4ac4a0\",\n          \"0x0\"\n        ],\n        \"nonce\": \"0x51\"\n      }\n    ],\n    \"block_id\": {\n      \"block_number\": 385940\n    }\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}
HttpResponse<String> response = Unirest.post("https://starknet-mainnet.core.chainstack.com/365cf697a3ad6d950b4c4a911e2e4f4d")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": 0,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"starknet_estimateFee\",\n  \"params\": {\n    \"request\": [\n      {\n        \"type\": \"INVOKE\",\n        \"max_fee\": \"0xb3a2f1ab6d632\",\n        \"version\": \"0x1\",\n        \"signature\": [\n          \"0x54c2201c7b9021777389e208e28eafc67e4ba1f1aa7016a1123b61c6ff79c29\",\n          \"0x58c2d97614e5abfd9668b314f344c945d16ea154cb32a7b08b4445204f1f1d3\"\n        ],\n        \"sender_address\": \"0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10\",\n        \"calldata\": [\n          \"0x3\",\n          \"0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7\",\n          \"0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c\",\n          \"0x3\",\n          \"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff\",\n          \"0x984e103a8acd6\",\n          \"0x0\",\n          \"0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8\",\n          \"0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c\",\n          \"0x3\",\n          \"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff\",\n          \"0x4c4b40\",\n          \"0x0\",\n          \"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff\",\n          \"0x2f0b3c5710379609eb5495f1ecd348cb28167711b73609fe565a72734550354\",\n          \"0xe\",\n          \"0x569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10\",\n          \"0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7\",\n          \"0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8\",\n          \"0x1f4\",\n          \"0xa76cc\",\n          \"0xa7b5e\",\n          \"0x984e103a8acd6\",\n          \"0x0\",\n          \"0x4c4b40\",\n          \"0x0\",\n          \"0x9542431aa6bf1\",\n          \"0x0\",\n          \"0x4ac4a0\",\n          \"0x0\"\n        ],\n        \"nonce\": \"0x51\"\n      }\n    ],\n    \"block_id\": {\n      \"block_number\": 385940\n    }\n  }\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://starknet-mainnet.core.chainstack.com/365cf697a3ad6d950b4c4a911e2e4f4d")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"id\": 0,\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"starknet_estimateFee\",\n  \"params\": {\n    \"request\": [\n      {\n        \"type\": \"INVOKE\",\n        \"max_fee\": \"0xb3a2f1ab6d632\",\n        \"version\": \"0x1\",\n        \"signature\": [\n          \"0x54c2201c7b9021777389e208e28eafc67e4ba1f1aa7016a1123b61c6ff79c29\",\n          \"0x58c2d97614e5abfd9668b314f344c945d16ea154cb32a7b08b4445204f1f1d3\"\n        ],\n        \"sender_address\": \"0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10\",\n        \"calldata\": [\n          \"0x3\",\n          \"0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7\",\n          \"0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c\",\n          \"0x3\",\n          \"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff\",\n          \"0x984e103a8acd6\",\n          \"0x0\",\n          \"0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8\",\n          \"0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c\",\n          \"0x3\",\n          \"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff\",\n          \"0x4c4b40\",\n          \"0x0\",\n          \"0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff\",\n          \"0x2f0b3c5710379609eb5495f1ecd348cb28167711b73609fe565a72734550354\",\n          \"0xe\",\n          \"0x569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10\",\n          \"0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7\",\n          \"0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8\",\n          \"0x1f4\",\n          \"0xa76cc\",\n          \"0xa7b5e\",\n          \"0x984e103a8acd6\",\n          \"0x0\",\n          \"0x4c4b40\",\n          \"0x0\",\n          \"0x9542431aa6bf1\",\n          \"0x0\",\n          \"0x4ac4a0\",\n          \"0x0\"\n        ],\n        \"nonce\": \"0x51\"\n      }\n    ],\n    \"block_id\": {\n      \"block_number\": 385940\n    }\n  }\n}"

response = http.request(request)
puts response.read_body
Starknet OpenRPC specFor the latest version of the publicly maintained OpenRPC spec, see the Starknet specs GitHub repo.
Starknet API method that returns an estimate of the fee for Starknet transactions. It estimates the resources required by transactions when applied on a given state. A client or wallet can use this estimate to determine the appropriate amount of fee to include in a transaction to ensure that the network processes it.
Get your own node endpoint todayStart for free and get your app to production levels immediately. No credit card required.You can sign up with your GitHub, X, Google, or Microsoft account.

​
Parameters

  • request — the transaction to estimate.
  • block_id — the hash of the requested block, or number (height) of the requested block, or a block tag, for the block referencing the state or call the transaction on.

​
Response

  • result — the fee estimation.

​
Use case

A practical use case for starknet_estimateFee is to calculate the fee required for a transaction that interacts with a contract on Starknet. The fee is an important factor in transactions, as it determines the amount of fees that need to be paid by the sender to the network for processing the transaction.

​
Deprecated feeder gateway method

The feeder gateway was deprecated on December 11, 2023. Example of the call you had to make to the feeder gateway before the deprecation:
Shell
curl --request POST \
     --url 'https://alpha-mainnet.starknet.io/feeder_gateway/estimate_fee?blockNumber=385940' \
     --header 'Content-Type: application/json' \
     --data-raw '{
         "type": "INVOKE_FUNCTION",
         "sender_address": "0x0569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10",
         "nonce": "0x51",
         "max_fee": "0xb3a2f1ab6d632",
         "version": "0x1",
         "calldata": [
            "0x3",
            "0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7",
            "0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c",
            "0x3",
            "0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff",
            "0x984e103a8acd6",
            "0x0",
            "0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8",
            "0x219209e083275171774dab1df80982e9df2096516f06319c5c6d71ae0a8480c",
            "0x3",
            "0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff",
            "0x4c4b40",
            "0x0",
            "0xfff107e2403123c7df78d91728a7ee5cfd557aec0fa2d2bdc5891c286bbfff",
            "0x2f0b3c5710379609eb5495f1ecd348cb28167711b73609fe565a72734550354",
            "0xe",
            "0x569b13e8164bc8000c0bbcf4887856516643af123c5bc3b01e229e92f9cfd10",
            "0x49d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7",
            "0x68f5c6a61780768455de69077e07e89787839bf8166decfbf92b645209c0fb8",
            "0x1f4",
            "0xa76cc",
            "0xa7b5e",
            "0x984e103a8acd6",
            "0x0",
            "0x4c4b40",
            "0x0",
            "0x9542431aa6bf1",
            "0x0",
            "0x4ac4a0",
            "0x0"
         ],
         "signature": ["0x54c2201c7b9021777389e208e28eafc67e4ba1f1aa7016a1123b61c6ff79c29", "0x58c2d97614e5abfd9668b314f344c945d16ea154cb32a7b08b4445204f1f1d3"]
     }'

Body

application/json
​
id
integer
​
jsonrpc
string
​
method
string
​
params
object

Response

200

Successful response

Last modified on July 7, 2026