Add Social Intents to your Ghost publication using code injection.
Installation
Open Code Injection
In your Ghost admin, go to Settings > Code injection.
Add to Site Footer
In the Site Footer field, paste:
<script src="https://www.socialintents.com/api/chat/socialintents.1.4.js#YOUR_WIDGET_ID" async="async"></script>Save
Click Save. The chat widget will appear on all pages of your Ghost site.
Code injection in Ghost is available on all plans, including the free self-hosted version.