PacletExecute["Upload",
 myPaclet,
 "UploadSiteFile" -> True
 ]

BeginPackage["PacletTools`"];
Get["https://github.com/b3m2a1/mathematica-tools/raw/master/PacletTools.m"]
EndPackage[]

PacletUpload[myPaclet,
 "UploadSiteFile" -> True
 ]

PacletExecute["Upload", PacletFind["*"][[1]],
 CloudConnect -> "TestingAccount",
 "UploadSiteFile" -> True
 ]

<|
    "PacletSiteFile" -> CloudObject["http://www.wolframcloud.com/objects/b3m2a1.testing/PacletServer/PacletSite.mz"],
    "PacletFiles" -> {CloudObject["http://www.wolframcloud.com/objects/b3m2a1.testing/PacletServer/Paclets/Alexa-1.0.0.paclet"]}
|>