eth_maxPriorityFeePerGas

curl --request POST \
  --url https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300 \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_maxPriorityFeePerGas",
  "id": 1
}
'

import requests

url = "https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300"

payload = {
    "jsonrpc": "2.0",
    "method": "eth_maxPriorityFeePerGas",
    "id": 1
}
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({jsonrpc: '2.0', method: 'eth_maxPriorityFeePerGas', id: 1})
};

fetch('https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300', 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://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300",
  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([
    'jsonrpc' => '2.0',
    'method' => 'eth_maxPriorityFeePerGas',
    'id' => 1
  ]),
  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://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300"

	payload := strings.NewReader("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_maxPriorityFeePerGas\",\n  \"id\": 1\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://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300")
  .header("Content-Type", "application/json")
  .body("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_maxPriorityFeePerGas\",\n  \"id\": 1\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300")

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  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_maxPriorityFeePerGas\",\n  \"id\": 1\n}"

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

{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}

POST

efb0a5eccd2caa5135eb54eba6f7f300

eth_maxPriorityFeePerGas

curl --request POST \
  --url https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300 \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_maxPriorityFeePerGas",
  "id": 1
}
'

import requests

url = "https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300"

payload = {
    "jsonrpc": "2.0",
    "method": "eth_maxPriorityFeePerGas",
    "id": 1
}
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({jsonrpc: '2.0', method: 'eth_maxPriorityFeePerGas', id: 1})
};

fetch('https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300', 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://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300",
  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([
    'jsonrpc' => '2.0',
    'method' => 'eth_maxPriorityFeePerGas',
    'id' => 1
  ]),
  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://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300"

	payload := strings.NewReader("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_maxPriorityFeePerGas\",\n  \"id\": 1\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://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300")
  .header("Content-Type", "application/json")
  .body("{\n  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_maxPriorityFeePerGas\",\n  \"id\": 1\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300")

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  \"jsonrpc\": \"2.0\",\n  \"method\": \"eth_maxPriorityFeePerGas\",\n  \"id\": 1\n}"

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

{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}

Optimism API method eth_maxPriorityFeePerGas queries the current maximum priority fee per gas. This method is particularly useful in periods of high network congestion to estimate the appropriate priority fee for a transaction.

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

This method does not require any parameters.

Response

result — the current maximum priority fee per gas, returned as a hexadecimal string.

Use case

The eth_maxPriorityFeePerGas method is essential for:

Wallets and transaction builders that dynamically adjust transaction fees to ensure timely inclusion in a block.
Users and services looking to estimate transaction costs more accurately during periods of network congestion.
Developers and analysts monitoring Optimism network fee dynamics.

Body

application/json

jsonrpc

string

default:2.0

required

method

string

default:eth_maxPriorityFeePerGas

required

integer

default:1

required

Response

200 - application/json

Current maximum priority fee per gas

jsonrpc

string

integer

result

string

Last modified on June 22, 2026

APIs introduction

Node APIs

Faucet API

Chainstack platform API

eth_maxPriorityFeePerGas | Optimism

Parameters

Response

Use case

Body

Response

​Parameters

​Response

​Use case

Body

Response

Parameters

Response

Use case