Publishing widget.json Files
Hosting
Static widget.json files can be stored as GitHub Gists.
For more dynamic widgets, you might consider a cloud option like AWS Lambda functions, Vercel, or building your own server on fly.io.
Publishing
We currently don't offer any CMS plugins. It would be cool if popular blog engines published to a widget.json file in addition to RSS files. If you build a plugin, let us know and we'll add it here!