eth_feeHistory

Get Fee History

POSThttps://site1.moralis-nodes.com/:chain/:apiKey

Retrieves historical data about transaction fees. The method returns the base fee per gas and reward (priority fee) ranges paid in each block for the requested block range. Useful for estimating appropriate fees for future transactions.

Note

Please refer to RPC schema page for more details on the RPC params and RPC response definitions of the RPC method.

PATH PARAMS

chainstringrequired

The blockchain to interact with.

ethsepoliaholeskybasebase-sepoliapolygonamoybscbsc-testnetarbitrumarbitrum-sepoliaoptimismoptimism-sepoliagnosisgnosis-testnetlinealinea-sepoliaavalanchemoonbeammoonrivermoonbaseblastblast-sepoliamantlemantle-sepoliapolygon-zkevmpolygon-zkevm-cardonazksynczksync-sepoliazetachainzetachain-testnetfantomopbnbflowflow-testnetroninronin-testnetlisklisk-sepoliapulse

apiKeystringrequired

Your API key for authentication.

BODY PARAM

Request Bodyobjectrequired

The request payload for retrieving fee history.

{ "jsonrpc": "2.0", "id": 1, "method": "eth_feeHistory" }

Responses

200Returns historical fee data for the requested block range.

400Bad Request

404Not Found

429Too Many Requests

500Internal Server Error

cURL

curl --request POST \
     --url 'https://site1.moralis-nodes.com/eth/YOUR_API_KEY' \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_feeHistory"
}
'

Node.js

// Node.js v18+ has native fetch support
// No additional dependencies required

const options = {
  method: 'POST',
  headers: {
    accept: 'application/json',
    'content-type': 'application/json'
  },
  body: JSON.stringify({
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_feeHistory"
  })
};

fetch('https://site1.moralis-nodes.com/eth/YOUR_API_KEY', options)
  .then(response => response.json())
  .then(response => console.log(response))
  .catch(err => console.error(err));

Python

# Dependencies to install:
# $ python -m pip install requests

import requests

url = "https://site1.moralis-nodes.com/eth/YOUR_API_KEY"

payload = {
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_feeHistory"
}
headers = {
  "Accept": "application/json",
  "Content-Type": "application/json"
}

response = requests.request("POST", url, json=payload, headers=headers)

print(response.text)

Go

package main

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

func main() {

  url := "https://site1.moralis-nodes.com/eth/YOUR_API_KEY"

  payload := strings.NewReader("{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"eth_feeHistory\"}")

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

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

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

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

  fmt.Println(res)
  fmt.Println(string(body))

}

PHP

<?php
// Dependencies to install:
// $ composer require guzzlehttp/guzzle

require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://site1.moralis-nodes.com/eth/YOUR_API_KEY', [
  'body' => '{"jsonrpc":"2.0","id":1,"method":"eth_feeHistory"}',
  'headers' => [
    'Accept' => 'application/json',
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();

Response Example

200 Returns historical fee data for the requested block range.

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "oldestBlock": "0x9cace7",
    "baseFeePerGas": [
      "0x4c4b40"
    ],
    "gasUsedRatio": [
      1.5
    ],
    "reward": [
      [
        "0x34630b8a00"
      ]
    ]
  }
}