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> For a complete documentation index, see https://docs.galleon8.com/api-reference/node-api/ethereum/quickstart/llms.txt.
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# Ethereum Quickstart

> Query Ethereum Node API endpoints with JSON-RPC.

The **Ethereum API** lets applications connect to an Ethereum node that is part of the Ethereum blockchain. Developers can interact with onchain data and send transactions to the network using the endpoints provided by the API.

## Networks

* Mainnet (`HTTPS` and `WSS`)
* Testnet:
  * Holesky (`HTTPS` and `WSS`)
  * Sepolia (`HTTPS` and `WSS`)

## API Querying

### Request example

Use `eth_blockNumber` to request the latest Ethereum block number from the Ethereum HTTPS endpoint:

```bash
curl https://rpc.ankr.com/eth/<apiKey> \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_blockNumber",
    "params": [],
    "id": 1
  }'
```

Replace `<apiKey>` with your project API key.

### Response example

A successful response returns the latest block number as a hexadecimal quantity:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x10d4f"
}
```

> Query Ethereum Node API endpoints with JSON-RPC.