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# Standard API Quickstart

> Make a first HTTPS JSON-RPC request with the W3API Node API Standard API.

This quickstart shows how to make a first Standard API request over HTTPS using an Ethereum JSON-RPC method as a general example. Node API endpoints are chain-specific, so production requests must use the endpoint for the chain you want to query.

## Prerequisites

Before you start, make sure you have:

* A W3api account with access to public Node API endpoints.
* A Node API HTTPS endpoint copied from the Web3 API platform for the selected chain.
* A terminal with `curl`.

---

## Copy Your HTTPS Endpoint

1. Open the [Web3 API platform](https://www.ankr.com/rpc/).
2. Select the project and blockchain network you want to use.
3. Copy the network's HTTPS endpoint.
4. Store it as `YOUR_HTTPS_ENDPOINT` in the examples below.

---

## Make a Request with curl

Use `eth_blockNumber` to request the latest block number from an Ethereum-compatible endpoint:

```bash
curl -X POST YOUR_HTTPS_ENDPOINT \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_blockNumber",
    "params": [],
    "id": 1
  }'
```

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x134d5c7"
}
```

---

## Next Steps

The Standard API references are chain-specific. Select the one you'd like to interact with to view its method details:

#### [Ethereum](/api-reference/node-api/ethereum/overview)

View Ethereum API reference.

#### [Solana](/api-reference/node-api/solana/overview)

View Solana API reference.

#### BNB Smart Chain

Coming soon...

#### Polygon PoS

Coming soon...

#### Base

Coming soon...

#### Arbitrum

Coming soon...

#### Bitcoin

Coming soon...

#### Optimism

Coming soon...

#### Avalanche

Coming soon...

#### TRON

Coming soon...

#### Monad

Coming soon...

#### Sui

Coming soon...