> ## Documentation Index > Fetch the complete documentation index at: https://docs.customeros.ai/llms.txt > Use this file to discover all available pages before exploring further. # Scalar > Install the CustomerOS tracker on your Scalar API documentation ## Overview Scalar allows you to inject custom JavaScript code into your API documentation through the Customize panel. You can add the CustomerOS tracker to the `` section of your documentation. ## Installation Get the HTML Snippet from the CustomerOS app to add to your website. It is specific to your domain so that you aren't blocked by adblockers and privacy modes. ### Adding the Tracker Script 1. Open your Scalar documentation project 2. In the top right corner, click **Customize** 3. Click on the **Code** tab 4. In the **"In ``"** section, paste the CustomerOS tracker script 5. Click **Save** or **Publish** your documentation The tracker will now be included on all pages of your documentation. The script should be placed in the "In ``" section, not in the "After ``" section. ## Verifying Installation After publishing your documentation: 1. Visit your Scalar documentation site 2. Open your browser's developer console (F12 or right-click → Inspect) 3. Check the **Network** tab for a request to your tracker domain 4. Look for successful 200s and 202s from the tracker subdomain 5. Check the **Console** tab for any errors You should see page views appearing in your CustomerOS dashboard within a few minutes. ## Troubleshooting If the tracker isn't working: * Ensure you've published your documentation (the tracker won't work in preview mode) * Check that your tracker domain is correct and accessible * Verify that the script is in the **"In ``"** section * Check the browser console for any JavaScript errors For more help, see our [Troubleshooting guide](/tracker/troubleshooting). ## Additional Resources * [Scalar Documentation](https://scalar.com/docs) * [Custom Events Tracking](/tracker/custom-events) * [Website Tracker Overview](/tracker)