How do i query all rules of a project via web api

i try to use
api/issues/search?facets=rules&componentKeys=xxx

then i get this result
{… , “called facets: [{” property" : “rules”, “values” : [{" val “:” Java: S1104 ", “count” : 6726},…]}]}

the rules in facets are obviously incomplete, is there any way i can get all the rules in a project?

thanks a lot for yours answers