Estimate a fee target.

GET

https://optimism-index.nownodes.io/api/v2/estimatefee/{blocks}

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Returns backend fee estimation for the requested confirmation target.

Load estimate: Low; a small backend fee estimate lookup.

Parameters

blocksinteger>= 1requiredpath

Confirmation target in blocks.

conservativebooleantruequery

Use conservative smart fee estimation where supported.

Response

200OK

Decimal fee estimate in chain base currency.

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.

default

Public API error.

Estimate a fee target.

curl -X GET 'https://optimism-index.nownodes.io/api/v2/estimatefee/{blocks}'

const response = await fetch('https://optimism-index.nownodes.io/api/v2/estimatefee/{blocks}', {
  method: 'GET',
});

const data = await response.json();

require 'net/http'
require 'json'

uri = URI('https://optimism-index.nownodes.io/api/v2/estimatefee/{blocks}')
request = Net::HTTP::Get.new(uri)

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

import requests

response = requests.get('https://optimism-index.nownodes.io/api/v2/estimatefee/{blocks}')
data = response.json()

const response = await fetch('https://optimism-index.nownodes.io/api/v2/estimatefee/{blocks}', {
  method: 'GET',
});

const data = await response.json();

const endpoint = "https://optimism-index.nownodes.io/api/v2/estimatefee/{blocks}";
const apiKey = "YOUR_API_KEY";

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

  return response.json();
}

const result = await nownodesRequest({});
console.log(result);

const response = await fetch('https://optimism-index.nownodes.io/api/v2/estimatefee/{blocks}', {
  method: 'GET',
});

const data = await response.json();

import requests

response = requests.get('https://optimism-index.nownodes.io/api/v2/estimatefee/{blocks}')
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://optimism-index.nownodes.io/api/v2/estimatefee/{blocks}')
request = Net::HTTP::Get.new(uri)

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

{
  "result": "0.000000000001000597"
}

Unknown API_key

Method Not Allowed

Missing API_key

{
  "error": "Parameter 'number of blocks' is not a number"
}