What does eth_maxPriorityFeePerGas do?

Returns the suggested EIP-1559 priority fee (validator tip) for Polygon, in wei, as a hex-encoded string.

How many credits does eth_maxPriorityFeePerGas cost?

eth_maxPriorityFeePerGas costs 1 credit(s) per call on Triport by default.

Is eth_maxPriorityFeePerGas available over WebSocket?

eth_maxPriorityFeePerGas is an HTTP JSON-RPC method.

eth_maxPriorityFeePerGas

Polygon / https://triport.io/polygon

Minimum tier: Free

Polygon method guide

Last updated: June 20, 2026

eth_maxPriorityFeePerGas returns a suggested priority fee — the tip paid directly to the validator on top of the protocol base fee — for inclusion in an upcoming Polygon block. The value is a 0x-prefixed hexadecimal quantity denominated in wei. It is the EIP-1559 complement to eth_gasPrice: where eth_gasPrice gives a single legacy gas price, this method isolates just the tip portion so you can build the maxPriorityFeePerGas field of a type-2 (EIP-1559) transaction.

Since the Bhilai hardfork, EIP-1559 is the primary fee model on Polygon, and this method is the canonical way to obtain a tip suggestion rather than relying on the legacy eth_gasPrice. The returned value is a node-side suggestion derived from recent block history, not a guarantee of inclusion. To build a full fee envelope, read the pending block's baseFeePerGas and add the tip returned here, typically setting maxFeePerGas ≈ baseFee * 2 + tip to absorb base-fee swings between blocks.

Polygon produces a block roughly every ~2.1 seconds, and the suggested tip can change block-to-block during volatile demand. Re-query it close to the moment you sign and broadcast so the tip reflects current network conditions. The method takes no parameters and is available on the free tier under the polygon_read_rpc scope.

Parameters

This method takes no parameters.

Returns

eth_maxPriorityFeePerGas return value
Field	Type
result	object

Examples

cURLTypeScriptPython

curl https://triport.io/polygon \
  -X POST -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer <api-key>' \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_maxPriorityFeePerGas","params":[]}'

const res = await fetch("https://triport.io/polygon", {
  method: "POST",
  headers: { "Content-Type": "application/json", Authorization: "Bearer <api-key>" },
  body: JSON.stringify({
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_maxPriorityFeePerGas",
  "params": []
}),
});
const data = await res.json();

import requests
resp = requests.post(
    "https://triport.io/polygon",
    headers={"Authorization": "Bearer <api-key>"},
    json={"jsonrpc":"2.0","id":1,"method":"eth_maxPriorityFeePerGas","params":[]},
)
print(resp.json())

Usage

Transport: HTTP (JSON-RPC).
Chain: Polygon.
Clusters: mainnet.
Credit cost: 1 per call.

FAQ

What does eth_maxPriorityFeePerGas do?: Returns the suggested EIP-1559 priority fee (validator tip) for Polygon, in wei, as a hex-encoded string.
How many credits does eth_maxPriorityFeePerGas cost?: eth_maxPriorityFeePerGas costs 1 credit(s) per call on Triport by default.
Is eth_maxPriorityFeePerGas available over WebSocket?: eth_maxPriorityFeePerGas is an HTTP JSON-RPC method.