If you're reading this it means that the Who's On First Application Programming Interface (API) is offline. That's not a feature and we're working on bring it back online. Normally the Who's On First API lives at:


To find out more about the Who's On First API we recommend reading the 2017 blog post introducing the API and Dan Phiffer's "WOF in a Box" series (parts one and two) about setting up and running the API locally.