WordPress has no built-in box for a site-wide script tag. A header and footer plugin adds one, and works with every theme.

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Before you start

  • Your website widget. Kelu makes one for you when you create a knowledge base. Its Install tab shows these steps with your widget id and key already in the code.
  • Your site on the widget’s Sites it works on list (Install tab), for example https://www.example.com.

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Add the widget

1

Install a header and footer plugin

In Plugins → Add New Plugin, search for WPCode, or any plugin that adds code to the site footer. Install and activate it.
2

Paste the snippet into the footer box

In WPCode, go to Code Snippets → Header & Footer and paste into Footer:
<script async src="https://widget.kelu.dev/kelu-widget.js"
  data-widget-id="YOUR_WIDGET_ID"
  data-client-key="kl_pk_..."></script>
Use your widget’s own snippet, or replace YOUR_WIDGET_ID and kl_pk_... with its values.
3

Save

Click Save Changes. If you use a caching plugin, clear its cache.
You can paste the snippet into your theme’s footer.php instead, just before <?php wp_footer(); ?>. Use a child theme: a theme update overwrites the parent theme’s files. Block themes have no footer.php, so use the plugin.

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Check it works

Open any page. A round icon button appears in the bottom-right corner, with the tooltip Ask AI. Ask a question and check that the answer lists its Sources. Nothing there? See Troubleshooting.