eth_maxPriorityFeePerGas - Monad

Example code for the eth_maxPriorityFeePerGas JSON-RPC method. Complete guide on how to use eth_maxPriorityFeePerGas JSON-RPC in GetBlock Web3 documentation.

This method returns the current suggested priority fee per gas for EIP-1559 transactions.

Parameters

None

Request

cURL

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_maxPriorityFeePerGas",
    "params": [],
    "id": "getblock.io"
}'

request.js

import axios from 'axios';

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "eth_maxPriorityFeePerGas",
    "params": [],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data)))
    .catch(error => console.log(error));

request.py

import requests
import json

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "eth_maxPriorityFeePerGas",
    "params": [],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

main.rs

use reqwest::header;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::new();
    
    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header(header::CONTENT_TYPE, "application/json")
        .body(r#"{
            "jsonrpc": "2.0",
            "method": "eth_maxPriorityFeePerGas",
            "params": [],
            "id": "getblock.io"
        }"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}

Response

response.json

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": "0x77359400"
}

Response Parameters

Field

Type

Description

result

string

Suggested priority fee per gas in MON-wei (hex). 0x77359400 = 2 Gwei.

Use Case

The eth_maxPriorityFeePerGas method is essential for:

EIP-1559 transaction construction
Priority fee estimation
Transaction speed optimization
Wallet gas settings
Automated trading fee calculation
Dynamic fee adjustment

Error Handling

Status Code

Error Message

Cause

403

Forbidden

Missing or invalid ACCESS-TOKEN.

Web3 Integration

ethers-example.js

import { ethers } from 'ethers';

const provider = new ethers.JsonRpcProvider('https://go.getblock.io/<ACCESS-TOKEN>/');

// Get fee data (includes maxPriorityFeePerGas)
const feeData = await provider.getFeeData();

console.log('Max Priority Fee:', ethers.formatUnits(feeData.maxPriorityFeePerGas, 'gwei'), 'Gwei');

// Build EIP-1559 transaction
const tx = {
    to: recipientAddress,
    value: ethers.parseEther('1.0'),
    maxFeePerGas: feeData.maxFeePerGas,
    maxPriorityFeePerGas: feeData.maxPriorityFeePerGas
};

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