Create a new block filter

POST

https://xrp-evm.nownodes.io/

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Calls the eth_newBlockFilter JSON-RPC method.

Body

application/json

Calls the eth_newBlockFilter JSON-RPC method.

JSON-RPC request payload.

jsonrpcstringrequired

JSON-RPC protocol version.

methodstringeth_newBlockFilterrequired

JSON-RPC method name.

paramsArray<any>required

This method does not require any parameters.

idintegerrequired

Client request identifier echoed by the server.

Response

200OK

HTTP 200 response for eth_newBlockFilter. The body contains either a successful result or a method-level JSON-RPC error.

400Bad Request

Bad Request. The request body is malformed or contains invalid JSON-RPC parameters.

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

Internal Server Error. The gateway or node failed while processing the request.

Create a new block filter

curl -X POST 'https://xrp-evm.nownodes.io/' \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_newBlockFilter",
    "params": [],
    "id": 1
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://xrp-evm.nownodes.io/");
const result = await provider.send("eth_newBlockFilter", []);
console.log(result);

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

uri = URI('https://xrp-evm.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "eth_newBlockFilter",
  "params": [],
  "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://xrp-evm.nownodes.io/"))
response = w3.provider.make_request("eth_newBlockFilter", [])
print(response)

import { createPublicClient, http } from "viem";

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

const result = await client.request({
  method: "eth_newBlockFilter",
  params: [],
});

console.log(result);

const endpoint = "https://xrp-evm.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_newBlockFilter", params: [], id: 1 });
console.log(result);

const response = await fetch('https://xrp-evm.nownodes.io/', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "jsonrpc": "2.0",
      "method": "eth_newBlockFilter",
      "params": [],
      "id": 1
    }),
});

const data = await response.json();

import requests

payload = {
  "jsonrpc": "2.0",
  "method": "eth_newBlockFilter",
  "params": [],
  "id": 1
}

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

require 'net/http'
require 'json'

uri = URI('https://xrp-evm.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "jsonrpc": "2.0",
    "method": "eth_newBlockFilter",
    "params": [],
    "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_newBlockFilter",
  "params": [],
  "id": 1
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x1"
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32602,
    "message": "invalid argument 0: invalid parameter for eth_newBlockFilter"
  }
}

{
  "code": 400,
  "message": "Bad Request"
}

Unknown API_key

Method Not Allowed

Missing API_key

{
  "code": 500,
  "message": "Internal Server Error"
}

Documentation

How to migrate to NOWNodes

Create a new block filter

Authorizations

Body

Response