claims, groups, owner, authErr := metricsRequestAuthenticate(r)
		if authErr != nil || (claims != nil && !claims.VerifyIssuer("prometheus", true)) {
			if ok {
				tc.FuncName = "handler.MetricsAuth"
				tc.ResponseRecorder.LogErrBody = true
			}

			writeErrorResponseJSON(r.Context(), w, toAdminAPIErr(r.Context(), errAuthentication), r.URL)
			return
		}

		cred := auth.Credentials{