The Data Fetcher app, which lets you run, save and schedule API requests without leaving Airtable, is live:
https://airtable.com/marketplace/blkZrRSlxzhBlv6T9/data-fetcher
It took longer to go through the marketplace review process than to write the app originally. Totally understandable though as it's a brand new marketplace so their review process is ramping up.
I'm looking forward to seeing what kind of usage it gets, and getting some feedback from early users!