eth_chainId

Returns the currently configured chain ID, a value used in replay-protected transaction signing as introduced by EIP-155.

Parameters

None.

Returns

A hexadecimal of the current chain ID.

Example

Replace YOUR-API-KEY with an API key from your Infura dashboard.

Request

cURL

curl https://mainnet.infura.io/v3/YOUR-API-KEY \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_chainId","params": [],"id":1}'

WSS

wscat -c wss://mainnet.infura.io/ws/v3/YOUR-API-KEY -x '{"jsonrpc":"2.0","method":"eth_chainId","params": [],"id":1}'

Response

JSON

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