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The examples below cover all three API operations you need to integrate ENS Ads: fetching campaigns, recording impressions, and recording clicks. Each section shows both JavaScript and Python implementations side by side so you can drop the relevant code directly into your server-side integration.
Store your API key in an environment variable (for example, process.env.ENS_API_KEY in Node.js or os.environ["ENS_API_KEY"] in Python) rather than hardcoding it in your source code. This keeps the key out of version control and makes it easier to rotate without a code change.

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Fetch campaigns

Call this when you need to retrieve available campaigns for a specific placement. Pass location and device to target campaigns to your user’s context. 
const BASE_URL = 'https://ads.enslive.live/api/v1';
const API_KEY = 'YOUR_API_KEY';

// Fetch campaigns
async function fetchCampaigns(placement, location, device) {
  try {
    const response = await fetch(
      `${BASE_URL}/campaigns/fetch?placement=${placement}&location=${location}&device=${device}`,
      {
        headers: {
          'Authorization': `Bearer ${API_KEY}`
        }
      }
    );
    
    if (!response.ok) {
      throw new Error(`Error: ${response.status}`);
    }
    
    const data = await response.json();
    return data.data;
  } catch (error) {
    console.error('Failed to fetch campaigns:', error);
  }
}

​
Track impression

Call this immediately after a campaign becomes visible to the user. Use the id field from the fetched campaign object as campaignId. 
const BASE_URL = 'https://ads.enslive.live/api/v1';
const API_KEY = 'YOUR_API_KEY';

// Track impression
async function trackImpression(campaignId, placement, location, device) {
  try {
    const response = await fetch(`${BASE_URL}/campaigns/impression`, {
      method: 'POST',
      headers: {
        'Authorization': `Bearer ${API_KEY}`,
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        campaignId,
        placement,
        location,
        device
      })
    });
    
    if (!response.ok) {
      throw new Error(`Error: ${response.status}`);
    }
  } catch (error) {
    console.error('Failed to track impression:', error);
  }
}

​
Track click

Call this when the user clicks or otherwise interacts with the campaign. Pass the same campaignId, placement, location, and device values you used for the impression call. 
const BASE_URL = 'https://ads.enslive.live/api/v1';
const API_KEY = 'YOUR_API_KEY';

// Track click
async function trackClick(campaignId, placement, location, device) {
  try {
    const response = await fetch(`${BASE_URL}/campaigns/click`, {
      method: 'POST',
      headers: {
        'Authorization': `Bearer ${API_KEY}`,
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({
        campaignId,
        placement,
        location,
        device
      })
    });
    
    if (!response.ok) {
      throw new Error(`Error: ${response.status}`);
    }
  } catch (error) {
    console.error('Failed to track click:', error);
  }
}