Get a custom set of chain properties

POST

https://atleta-testnet.nownodes.io/system_properties

Authorizations

ApiKeyAuthApiKeyAuth

API_key string

NOWNodes API key passed in the api-key header.

Retrieves the chain-specific properties as a JSON object.

Body

application/json

API_keystring

jsonrpcstring

idstring

methodstring

paramsArray<any>

Response

200OK

JSON object containing chain properties

400Bad Request

Bad Request

500Internal Server Error

Internal Server Error

Get a custom set of chain properties

curl -X POST 'https://atleta-testnet.nownodes.io/system_properties' \
  -H 'Content-Type: application/json' \
  -d '{
    "API_key": "your_API_key",
    "jsonrpc": "2.0",
    "id": "test",
    "method": "system_properties",
    "params": []
  }'

import { JsonRpcProvider } from "ethers";

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

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

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

import { createPublicClient, http } from "viem";

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

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

console.log(result);

const endpoint = "https://atleta-testnet.nownodes.io/system_properties";
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: "system_properties", params: [], id: 1 });
console.log(result);

const response = await fetch('https://atleta-testnet.nownodes.io/system_properties', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
      "API_key": "your_API_key",
      "jsonrpc": "2.0",
      "id": "test",
      "method": "system_properties",
      "params": []
    }),
});

const data = await response.json();

import requests

payload = {
  "API_key": "your_API_key",
  "jsonrpc": "2.0",
  "id": "test",
  "method": "system_properties",
  "params": []
}

response = requests.post('https://atleta-testnet.nownodes.io/system_properties', json=payload)
data = response.json()

require 'net/http'
require 'json'

uri = URI('https://atleta-testnet.nownodes.io/system_properties')
request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
    "API_key": "your_API_key",
    "jsonrpc": "2.0",
    "id": "test",
    "method": "system_properties",
    "params": []
  }'

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

Request Body

{
  "API_key": "your_API_key",
  "jsonrpc": "2.0",
  "id": "test",
  "method": "system_properties",
  "params": []
}

200

{
  "jsonrpc": "2.0",
  "result": {
    "ss58Format": 2340,
    "tokenDecimals": 18,
    "tokenSymbol": "ATLA"
  },
  "id": "test"
}

Documentation

How to migrate to NOWNodes

Get a custom set of chain properties

Authorizations

Body

Response