eth_feeHistory

POST

https://eth.nownodes.io/

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Returns fee market information for a range of blocks. This is typically used by wallets and other tools to estimate appropriate gas prices.

Body

application/json

Returns fee market information for a range of blocks. This is typically used by wallets and other tools to estimate appropriate gas prices.

Request payload for eth_feeHistory.

jsonrpcstringrequired

JSON-RPC protocol version.

methodstringrequired

JSON-RPC method name.

paramsArray<string | integer | Array<number>>required

Parameters:

blockCount — number of blocks in the requested range.
newestBlock — highest block number in the requested range (can be "latest").
rewardPercentiles — list of percentile values to sample priority fees from each block (optional).

Show child attributes

Single JSON-RPC parameter value accepted by this method.

Any of

Single JSON-RPC parameter value accepted by this method.

string

Single JSON-RPC parameter value accepted by this method.

integer

Array<number>

idintegerrequired

Client-provided request identifier echoed in the response.

Response

200OK

Response returned by eth_feeHistory.

401Unauthorized

Unauthorized: API key is present but rejected by the NOWNodes gateway.

405Method Not Allowed

Method Not Allowed. Returned by the NOWNodes gateway for malformed or unsupported gateway-level requests.

422Unprocessable Entity

Missing API key. The NOWNodes gateway returns plain text for this error.

500Internal Server Error

Upstream node or gateway error.

eth_feeHistory

curl -X POST 'https://eth.nownodes.io/' \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_feeHistory",
    "params": [
      "0x5",
      "latest",
      [
        10,
        50,
        90
      ]
    ],
    "id": 1
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://eth.nownodes.io/");
const result = await provider.send("eth_feeHistory", [
  "0x5",
  "latest",
  [
    10,
    50,
    90
  ]
]);
console.log(result);

require 'eth'
require 'json'
require 'net/http'

uri = URI('https://eth.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "eth_feeHistory",
  "params": [
    "0x5",
    "latest",
    [
      10,
      50,
      90
    ]
  ],
  "id": 1
}'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) do |http|
  http.request(request)
end

puts JSON.parse(response.body)

from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://eth.nownodes.io/"))
response = w3.provider.make_request("eth_feeHistory", [
  "0x5",
  "latest",
  [
    10,
    50,
    90
  ]
])
print(response)

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://eth.nownodes.io/"),
});

const result = await client.request({
  method: "eth_feeHistory",
  params: [
  "0x5",
  "latest",
  [
    10,
    50,
    90
  ]
],
});

console.log(result);

const endpoint = "https://eth.nownodes.io/";
const apiKey = "YOUR_API_KEY";

async function nownodesRequest(payload) {
  const response = await fetch(endpoint, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "api-key": apiKey,
    },
    body: JSON.stringify(payload),
  });

  return response.json();
}

const result = await nownodesRequest({ jsonrpc: "2.0", method: "eth_feeHistory", params: [
  "0x5",
  "latest",
  [
    10,
    50,
    90
  ]
], id: 1 });
console.log(result);

const response = await fetch('https://eth.nownodes.io/', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "jsonrpc": "2.0",
      "method": "eth_feeHistory",
      "params": [
        "0x5",
        "latest",
        [
          10,
          50,
          90
        ]
      ],
      "id": 1
    }),
});

const data = await response.json();

import requests

payload = {
  "jsonrpc": "2.0",
  "method": "eth_feeHistory",
  "params": [
    "0x5",
    "latest",
    [
      10,
      50,
      90
    ]
  ],
  "id": 1
}

response = requests.post('https://eth.nownodes.io/', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://eth.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "jsonrpc": "2.0",
    "method": "eth_feeHistory",
    "params": [
      "0x5",
      "latest",
      [
        10,
        50,
        90
      ]
    ],
    "id": 1
  }'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http| http.request(request) }
data = JSON.parse(response.body)

Request Body

{
  "jsonrpc": "2.0",
  "method": "eth_feeHistory",
  "params": [
    "0x5",
    "latest",
    [
      10,
      50,
      90
    ]
  ],
  "id": 1
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": {
    "oldestBlock": "0x184077f",
    "reward": [
      [
        "0x518ef",
        "0x14370bd"
      ],
      [
        "0x1e61c",
        "0x449bf75"
      ],
      [
        "0xf4240",
        "0x46a9fa3"
      ]
    ],
    "baseFeePerGas": [
      "0x3b71c21",
      "0x413f67b",
      "0x3beb9e8"
    ],
    "gasUsedRatio": [
      0.8905035333333333,
      0.17341125,
      0.8817176333333333
    ],
    "baseFeePerBlobGas": [
      "0x3cc5cb",
      "0x3486b8",
      "0x351e68"
    ],
    "blobGasUsedRatio": [
      0.047619047619047616,
      0.14285714285714285,
      0.3333333333333333
    ]
  }
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32602,
    "message": "invalid argument 0: invalid hex or decimal integer \"not-a-valid-param\""
  }
}

Unknown API_key

Method Not Allowed

Missing API_key

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32602,
    "message": "invalid argument 0: invalid hex or decimal integer \"not-a-valid-param\""
  }
}

Documentation

How to migrate to NOWNodes

eth_feeHistory

Authorizations

Body

Response