# Quickstart Guide

## Prerequisites[​](https://docs.infura.io/api/networks/ethereum/quickstart#prerequisites) <a href="#prerequisites" id="prerequisites"></a>

Ensure you [have an API key](/liquify/rpc-quickstart-guide/create-an-rpc-endpoint.md) with the BNB Chain network enabled.

## Make calls[​](https://docs.infura.io/api/networks/ethereum/quickstart#make-calls) <a href="#make-calls" id="make-calls"></a>

### cURL[​](https://docs.infura.io/api/networks/ethereum/quickstart#curl) <a href="#curl" id="curl"></a>

Run the following command in your terminal. This command will retrieve the latest block number from the BNB Chain network.&#x20;

Replace `YOUR-API-KEY` with your actual Liquify Gateway API key.

```
curl https://gateway.liquify.com/api=YOUR-API-KEY \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
```

## NOTE

In Windows Powershell, quotations in `curl` commands can behave differently than expected. We recommend using Postman on Windows systems.

## Postman[​](https://docs.infura.io/api/networks/ethereum/quickstart#postman) <a href="#postman" id="postman"></a>

Call the JSON-RPC methods using [Postman](https://learning.postman.com/docs/getting-started/introduction/).

**INFO:** Set the correct [variables](https://learning.postman.com/docs/sending-requests/variables/#understanding-variables) for your API key and network before running requests.

## Node (JavaScript)[​](https://docs.infura.io/api/networks/ethereum/quickstart#node-javascript) <a href="#node-javascript" id="node-javascript"></a>

In these examples, you'll use [npm](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm) as your package manager.

### **Node Fetch**[**​**](https://docs.infura.io/api/networks/ethereum/quickstart#node-fetch)

1. In your project folder, install the Node Fetch package using npm:

   ```
   npm i node-fetch
   ```
2. Create your Javascript file and copy the following code:

   Replace `YOUR-API-KEY` with your actual Liquify Gateway API key.

   index.js

   ```
   import fetch from 'node-fetch';

   fetch("https://gateway.liquify.com/api=YOUR-API-KEY", {
     method: "POST",
     headers: {
       "Content-Type": "application/json"
     },
     body: JSON.stringify({
       jsonrpc: "2.0",
       method: "eth_blockNumber",
       params: [],
       id: 1
     })
   })
   .then(response =>
     response.json()
   )
   .then(data => {
     console.log(data);
   })
   .catch(error => {
     console.error(error);
   });
   ```
3. Run the code using the following command:

   ```
   node index.js
   ```

### **Axios**[**​**](https://docs.infura.io/api/networks/ethereum/quickstart#axios)

1. In your project folder, install the Axios package using npm:

   ```
   npm i axios
   ```
2. Create your Javascript file and copy the following code:

   Replace `YOUR-API-KEY` with your actual Liquify Gateway API key.

   index.js

   ```
   const axios = require('axios');

   axios.post('https://gateway.liquify.com/api=YOUR-API-KEY', {
     jsonrpc: '2.0',
     method: 'eth_blockNumber',
     params: [],
     id: 1
   })
   .then(response => {
     console.log(response.data);
   })
   .catch(error => {
     console.error(error);
   });
   ```
3. Run the code using the following command:

   ```
   node index.js
   ```

### **Ethers**[**​**](https://docs.infura.io/api/networks/ethereum/quickstart#ethers)

1. In your project folder, install the ethers package using npm:

   ```
   npm install ethers
   ```
2. Create your Javascript file and copy the following code:

   Replace `YOUR-API-KEY` with your actual Liquify Gateway API key.

   index.js

   ```
   const ethers = require('ethers');

   const provider = new ethers.providers.JsonRpcProvider('https://gateway.liquify.com/api=YOUR-API-KEY');

   provider.getBlockNumber()
   .then(blockNumber => {
     console.log(blockNumber);
   })
   .catch(error => {
     console.error(error);
   });
   ```
3. Run the code using the following command:

   ```
   node index.js
   ```

### **Web3.js**[**​**](https://docs.infura.io/api/networks/ethereum/quickstart#web3js)

1. In your project folder, [install the latest version of the web3.js library](https://www.npmjs.com/package/web3?activeTab=versions)
2. Create your Javascript file and copy the following code:

   Replace `YOUR-API-KEY` with your actual Liquify Gateway API key.

   index.js

   ```
   var { Web3 } = require("web3");
   var provider = "https://gateway.liquify.com/api=YOUR-API-KEY";
   var web3Provider = new Web3.providers.HttpProvider(provider);
   var web3 = new Web3(web3Provider);

   web3.eth.getBlockNumber().then((result) => {
     console.log("Latest Ethereum Block is ", result);
   });
   ```
3. Run the code using the following command:

   ```
   node index.js
   ```

### Python[​](https://docs.infura.io/api/networks/ethereum/quickstart#python) <a href="#python" id="python"></a>

1. In your project folder, install the `requests` library:

   ```
   pip install requests
   ```
2. Create your Python file and copy the following code:

   Replace `YOUR-API-KEY` with your actual Liquify Gateway API key.

   index.py

   ```
   import requests
   import json

   url = 'https://gateway.liquify.com/api=YOUR-API-KEY'

   payload = {
       "jsonrpc": "2.0",
       "method": "eth_blockNumber",
       "params": [],
       "id": 1
   }

   headers = {'content-type': 'application/json'}

   response = requests.post(url, data=json.dumps(payload), headers=headers).json()

   print(response)
   ```
3. Run the code using the following command:

   ```
   python index.py
   ```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://liquify-2.gitbook.io/liquify/supported-chains/chainlist/bnb-chain/quickstart-guide.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.