Ethereum: Binance API, how to create a URL with an API key

Building an Ethereum API Connection in JavaScript for Binance

==================================================== =========

In this article, we will create a simple example of how to connect to the Binance API using the fetch API and extract data without requiring a Binance API key.

Prerequisites

—————

• You have a Binance account with API keys

• Node.js installed on your machine (if you don’t have it, download and install from [

Code

——

// Import the fetch API and required libraries

const axios = require('axios');


// Set your Binance API key and API secret (optional)

const apiKey = 'YOUR_BINANCE_API_KEY';

const apiSecret = 'YOUR_BINANCE_API_SECRET';


// Define the Ethereum pair you want to retrieve data for

const market = 'ETHUSDT';


async function getEthereumData() {

  // Construct the API endpoint URL

  const url = 


  try {

    // Set headers and authentication (optional)

    const headers = {

      'X-MBX-APIKEY': apiKey,

      'X-MBX-SIGN': apiSecret,

      'X-MBX-TS': new Date().getTime()

    };


    // Send a GET request to the API endpoint

    const response = await axios.get(url, { headers });


    // Extract and return the data as JSON

    return response.data;

  } catch (error) {

    console.error(Error: ${error.message});

  }

}


// Example usage:

getEthereumData()

  .then((data) => {

    const marketArray = data[0].values;


    // Print the extracted data to the console

    console.log(marketArray);

  })

  .catch((error) => {

    console.error(Error: ${error.message});

  });

How ​​it Works

--------------

• We import the axioslibrary, which is used for making HTTP requests.

• We set up your Binance API key and API secret (if applicable).

• We define the Ethereum pair you want to retrieve data for (ETHUSDTin this example).

• We construct the API endpoint URL using the required parameters (e.g.,symbol,limit,interval).

• We set headers with your Binance API credentials.

• We send a GET request to the API endpoint and parse the response as JSON.

• Finally, we extract and print the extracted data.

Note: This code assumes that you have a valid Binance account and API key. You should replaceYOUR_BINANCE_API_KEYandYOUR_BINANCE_API_SECRET` with your current credentials. Additionally, this example only retrieves the first 100 Klines for each interval. If you need to retrieve more data or use different parameters (e.g., order type), modify the code accordingly.