Hmm... While I personally don't see much use in the particular endpoints you have integrated with, what I do see the need for on a daily basis is API endpoint

Hmm... While I personally don't see much use in the particular endpoints you have integrated with, what I do see the need for on a daily basis is API endpoint monitoring. Modern applications depend on a huge quantity of APIs and this becomes even more true as everything moves to micro services. One endpoint/service going down can break a lot of things as a chain reaction. There are website monitoring services such as Pingdom but I haven't seen anything dedicated to APIs. You can create a poor man's API monitor with Pingdom (if REST) but once you get inside a corporate network or you need specific authentication, these services don't work anymore. I can maybe see repurposing what you have built into an API monitoring service which using a dashboards and alerting quickly spots API failure...perhaps?