That's it. The widget adapts to the width it's given. Optional data-* attributes (layout, theme, limit, data-constrained for fixed-height boxes) are listed in the options.
Make your own. Copy the example data folder into a new repo, add your reviews, and publish it: Cloudflare Pages is recommended (deploy workflow included), GitHub Pages works as a backup. Then point data-source at its address. Setup guide: github.com/bristweb/cred.
Please don't embed or link to this page itself; paste the snippet on your own site.