diff --git a/server/app/goauto/purchase/admin_query_test.go b/server/app/goauto/purchase/admin_query_test.go
index 5f2106b..81402f7 100644
--- a/server/app/goauto/purchase/admin_query_test.go
+++ b/server/app/goauto/purchase/admin_query_test.go
@@ -101,3 +101,20 @@ func TestAdminQueryHandlersRequireOperatorRole(t *testing.T) {
 		}
 	}
 }
+
+func TestAdminSuccessEnvelopeIsCompatibleWithGoAdminUI(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	recorder := httptest.NewRecorder()
+	context, _ := gin.CreateTestContext(recorder)
+	writeAdminReplay(context, gin.H{"id": 42}, true)
+	if recorder.Code != http.StatusOK {
+		t.Fatalf("status=%d", recorder.Code)
+	}
+	var response map[string]any
+	if err := json.Unmarshal(recorder.Body.Bytes(), &response); err != nil {
+		t.Fatal(err)
+	}
+	if response["code"] != float64(http.StatusOK) || response["replayed"] != true || response["data"] == nil {
+		t.Fatalf("unexpected admin envelope: %v", response)
+	}
+}
diff --git a/server/app/goauto/purchase/handler.go b/server/app/goauto/purchase/handler.go
index 0b01915..ee9106e 100644
--- a/server/app/goauto/purchase/handler.go
+++ b/server/app/goauto/purchase/handler.go
@@ -57,7 +57,7 @@ func (h Handler) AdminList(c *gin.Context) {
 		writeError(c, err)
 		return
 	}
-	c.JSON(http.StatusOK, gin.H{"data": response})
+	writeAdminData(c, response)
 }
 
 func (h Handler) AdminDetail(c *gin.Context) {
@@ -77,7 +77,7 @@ func (h Handler) AdminDetail(c *gin.Context) {
 		writeError(c, err)
 		return
 	}
-	c.JSON(http.StatusOK, gin.H{"data": response})
+	writeAdminData(c, response)
 }
 
 func (h Handler) AdminCreate(c *gin.Context) {
@@ -97,7 +97,7 @@ func (h Handler) AdminCreate(c *gin.Context) {
 		writeError(c, err)
 		return
 	}
-	c.JSON(http.StatusOK, gin.H{"data": record, "replayed": replayed})
+	writeAdminReplay(c, record, replayed)
 }
 func (h Handler) Next(c *gin.Context) {
 	service, ok := h.service(c)
@@ -160,7 +160,7 @@ func (h Handler) SpecDecision(c *gin.Context) {
 		writeError(c, err)
 		return
 	}
-	c.JSON(http.StatusOK, gin.H{"data": p, "replayed": replayed})
+	writeAdminReplay(c, p, replayed)
 }
 func (h Handler) AuthorizeRePurchase(c *gin.Context) { h.manual(c, (*Service).AuthorizeRePurchase) }
 func (h Handler) ReviewPayment(c *gin.Context)       { h.manual(c, (*Service).ReviewPayment) }
@@ -215,7 +215,15 @@ func (h Handler) manual(c *gin.Context, fn func(*Service, context.Context, uint6
 		writeError(c, err)
 		return
 	}
-	c.JSON(http.StatusOK, gin.H{"data": p, "replayed": replayed})
+	writeAdminReplay(c, p, replayed)
+}
+
+func writeAdminData(c *gin.Context, data any) {
+	c.JSON(http.StatusOK, gin.H{"code": http.StatusOK, "data": data})
+}
+
+func writeAdminReplay(c *gin.Context, data any, replayed bool) {
+	c.JSON(http.StatusOK, gin.H{"code": http.StatusOK, "data": data, "replayed": replayed})
 }
 
 func allowedOperator(c *gin.Context) bool {