I imagine a server mode for lein midje :autotest where it would report the last status of the tests, e.g. using a HTTP API returning JSON objects:
GET("/api/v1/tests")
=> [{:namespace 'name.space}]
GET("/api/v1/tests/:namespace/status")
=> {:namespace 'name.space
:filename "/full/path"
:status :failure/:success/...
:message "Detailed failure information from the test engine"
:coverage 0.1234}