diff --git a/web/src/utils/types.ts b/web/src/utils/types.ts
new file mode 100644
index 0000000..9dd74d2
--- /dev/null
+++ b/web/src/utils/types.ts
@@ -0,0 +1,26 @@
+export interface UserResponse {
+  id: number
+  username: string
+  displayName: string
+}
+
+export interface GroupResponse {
+  groupId: number
+  name: string
+  description: string
+}
+
+export interface PermissionResponse {
+  permissionId: number
+  uri: string
+  setting: string
+  user?: UserResponse
+  group?: GroupResponse
+}
+
+export interface RegisterPermissionPayload {
+  uri: string
+  setting: string
+  principalType: string
+  principalId: number
+}