Hi Eric, Thanks for the posts! I think they’re a great entrypoint into Compojure. One note: namespaces in Clojure have a code part & a filesystem part, where components in the namespace must map to components of the classpath-relative filesystem path: my.cool.ns must be in /my/cool/ns.clj. To work properly, the file containing your namespace declaration (ns ericlavigne) should therefore be called