Can I install a Search.io pingback with Google Tag Manager (GTM)?
Yes, follow the steps below.
Search.io is a "custom HTML tag," you can select this when adding a new tag as per below:
Search.io is typically a global install, so you can activate across your entire site as per below. Don't worry about hiding various pages from your site search, you can easily exclude them later using "crawling rules".
You can access your install code from within the Search.io app itself (if logged in). Or you can cut and paste directly from below.
Copy the code on the left, replace <project> and <collection> with your actual company and collection names.
Once you've completed the above steps, your content will begin to index and build statistics around popularity, recency, etc to optimize your search and recommendations.