eth_chainId

curl -X POST "https://edge.goldsky.com/standard/evm/1?secret=demo" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc": "2.0", "method": "eth_chainId", "params": [], "id": 1}'

const response = await fetch('https://edge.goldsky.com/standard/evm/1?secret=demo', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
  "jsonrpc": "2.0",
  "method": "eth_chainId",
  "params": [],
  "id": 1
})
});
const { result } = await response.json();
console.log(result);

import requests

response = requests.post(
    'https://edge.goldsky.com/standard/evm/1?secret=demo',
    json={
  "jsonrpc": "2.0",
  "method": "eth_chainId",
  "params": [],
  "id": 1
}
)
print(response.json()['result'])