cross posted on mathematica.stackexchange.com

Let's create an API which creates one file each time it is called/accessed:

obj = CloudDeploy[
  APIFunction[{}
  , Put[$RequesterWolframID
    , "testFiles/" <> DateString["ISODateTime"] <> ".txt"
    ] &
  ]
, "apiTest"
, Permissions -> "Public"
];

CloudEvaluate@CreateDirectory@"testFiles/";

and let's call it:

URLRead[obj]
CloudObjects["testFiles/"]
URLRead[obj]
CloudObjects["testFiles/"]

But this is not true, if you visit a browser interface they will be there:

In fact, once you visit it, CloudObjects cache changes, but only once:

URLRead[obj]
CloudObjects["testFiles/"]
URLRead[obj]
CloudObjects["testFiles/"]

So how to make sure CloudObjects returns up to date result?

I am fine with an additional step to flush the cache, I just want it to be possible programmatically.