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POST
eth_maxPriorityFeePerGas
curl --request POST \
  --url https://monad-testnet.core.chainstack.com/9c5b265f20b3ea5df4f54f70eb74b800/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_maxPriorityFeePerGas",
  "params": []
}
'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": "<string>"
}
Monad API method that returns a suggestion for the max priority fee per gas (tip) to use in EIP-1559 transactions. This method helps you determine an appropriate tip to incentivize validators to include your transaction.
Monad-specific behavior: Currently returns a hardcoded suggested fee of 2 gwei. This is temporary and will be updated with dynamic fee estimation in the future.
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​
Parameters

  • none

​
Response

  • result — the suggested max priority fee per gas in wei, encoded as hexadecimal.

​
eth_maxPriorityFeePerGas code examples

const { ethers } = require("ethers");

const provider = new ethers.JsonRpcProvider("CHAINSTACK_NODE_URL");

async function getMaxPriorityFee() {
  const maxPriorityFee = await provider.send("eth_maxPriorityFeePerGas", []);
  console.log(`Max priority fee: ${parseInt(maxPriorityFee, 16)} wei`);
  console.log(`Max priority fee: ${ethers.formatUnits(maxPriorityFee, "gwei")} gwei`);
}

getMaxPriorityFee();

​
Use case

A practical use case for eth_maxPriorityFeePerGas is dynamically setting the priority fee for EIP-1559 transactions to ensure competitive inclusion times while avoiding overpaying during low-congestion periods.

Body

application/json
​
id
integer
default:1
​
jsonrpc
string
default:2.0
​
method
string
default:eth_maxPriorityFeePerGas
​
params
array

Response

200 - application/json

The max priority fee per gas in wei.

​
jsonrpc
string
​
id
integer
​
result
string