Adding tags is tricky since it require a lot of manual work. Go through a documentation for all 200+ APIs and manually tag them.
If someone decide to volunteer for this task I created issue on Github: https://github.com/APIs-guru/api-models/issues/54
Biggest upcoming feature is "Run in Postman" button:
https://www.getpostman.com/docs/run_button_ux
Spoke with guys from Postman and waiting for them to open up API to their Postman Cloud.