Query Endpoint by Hostname

How do I build an endpoint query by hostname match?

I'm trying to figure out how to query Central via API, specifying the hostname of the device.

This seems possible according to the documentation: https://developer.sophos.com/docs/endpoint-v1/1/routes/endpoints/get

However, when I try to construct a query in the tool using any criteria, no code result is shown, just a blank page (using Safari 14.0.3). See below.

I successfully built a query to return a specific fields using the /endpoints/{endpointID} portion of the tool, here: https://developer.sophos.com/docs/endpoint-v1/1/routes/endpoints/%7BendpointId%7D/get

How do I build an endpoint query by hostname match?