We do this at https://endoflife.date API, and it works quite well.
We also do something similar on Datatig, which is a tool I'm writing for the general situation of crowdsourcing data in Git repos. It makes it easier for people to submit data and then creates usable data and handy websites. The static website output has an API which is just static JSON files. https://pypi.org/project/DataTig/ or https://datatig.readthedocs.io/en/latest/