Get Filter Changes

POST

https://robinhood.nownodes.io/

Authorizations

ApiKeyAuthApiKeyAuth

api-key string

NOWNodes API key passed in the api-key header.

Returns an array of logs that occurred since the last poll for the specified filter ID.

Body

application/json

JSON-RPC 2.0 request to the Robinhood Chain mainnet endpoint.

Request payload for Get Filter Changes.

jsonrpcstringrequired

JSON-RPC version.

methodstringrequired

JSON-RPC method name.

paramsArray<string>required

Parameters array with a single element: 1. The filter ID (hex string).

idintegerrequired

Request identifier.

Response

200OK

Array of log objects or transaction hashes depending on filter type

500Internal Server Error

Upstream node or gateway error.

Get Filter Changes

curl -X POST 'https://robinhood.nownodes.io/' \
  -H 'Content-Type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_getFilterChanges",
    "params": [
      "0xdea2710083cee0a117d8ce33f170739c"
    ],
    "id": 1
  }'

import { JsonRpcProvider } from "ethers";

const provider = new JsonRpcProvider("https://robinhood.nownodes.io/");
const result = await provider.send("eth_getFilterChanges", [
  "0xdea2710083cee0a117d8ce33f170739c"
]);
console.log(result);

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

uri = URI('https://robinhood.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "jsonrpc": "2.0",
  "method": "eth_getFilterChanges",
  "params": [
    "0xdea2710083cee0a117d8ce33f170739c"
  ],
  "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://robinhood.nownodes.io/"))
response = w3.provider.make_request("eth_getFilterChanges", [
  "0xdea2710083cee0a117d8ce33f170739c"
])
print(response)

import { createPublicClient, http } from "viem";

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

const result = await client.request({
  method: "eth_getFilterChanges",
  params: [
  "0xdea2710083cee0a117d8ce33f170739c"
],
});

console.log(result);

const endpoint = "https://robinhood.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_getFilterChanges", params: [
  "0xdea2710083cee0a117d8ce33f170739c"
], id: 1 });
console.log(result);

const response = await fetch('https://robinhood.nownodes.io/', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "jsonrpc": "2.0",
      "method": "eth_getFilterChanges",
      "params": [
        "0xdea2710083cee0a117d8ce33f170739c"
      ],
      "id": 1
    }),
});

const data = await response.json();

import requests

payload = {
  "jsonrpc": "2.0",
  "method": "eth_getFilterChanges",
  "params": [
    "0xdea2710083cee0a117d8ce33f170739c"
  ],
  "id": 1
}

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

require 'net/http'
require 'json'

uri = URI('https://robinhood.nownodes.io/')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "jsonrpc": "2.0",
    "method": "eth_getFilterChanges",
    "params": [
      "0xdea2710083cee0a117d8ce33f170739c"
    ],
    "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_getFilterChanges",
  "params": [
    "0xdea2710083cee0a117d8ce33f170739c"
  ],
  "id": 1
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": [
    {
      "address": "0x6fed5ae5d486a59081fdc040179cebda4be80511",
      "topics": [
        "0xff578ac69a10171878dc70c8a6c213c2432d20989dccb2694e0838125e05ffbc",
        "0x000000000000000000000000000000000000000000000000000000000017ab12"
      ],
      "data": "0x78fa8a19049afde5f773d336a420aa3b96812354d5b5aafd482b08fcb5bf72e1",
      "blockNumber": "0x1d43f26",
      "transactionHash": "0x42fa5a01c9cab242a40993f3bc8ff841caa67abb74a3f5bd9d924e5337518614",
      "transactionIndex": "0x5",
      "blockHash": "0xccb0541618f53ef7ef11215da387c33811f6481de4612e798bf48bc4267c7e4f",
      "blockTimestamp": "0x6a768991",
      "logIndex": "0x11",
      "removed": false
    }
  ]
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32000,
    "message": "filter not found"
  }
}

{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32000,
    "message": "filter not found"
  }
}

Documentation

How to migrate to NOWNodes

Get Filter Changes

Authorizations

Body

Response