There used to be "api/resources/" api to realize this. But unfortunately its not in my v6.4.
I tried "/api/qualitygates/search?gateId=1" after confirming that the Default Qualitygate is "SonarQube way" using this api to confirm it "api/qualitygates/list" but I get.
{"more":false,"results":[]}
Is there any easy way to get all the projects in my SonarQube server by the API?