Yes, we had it but closed it in 2016 after 6 clones of Nomads.com showed up using our data on Product Hunt, Hacker News and in the iOS App Store and Google Play Store. It caused more trouble than it did good, so it's permanently closed.

The other reason we can't have an API anymore is that a lot of the data we use on Nomads.com is licensed (and paid for) from other APIs (e.g. weather, climate data, traffic data) which we are not allowed to re-distribute.