diff --git a/packages/frontend-core/src/api/routes.js b/packages/frontend-core/src/api/routes.ts
similarity index 52%
rename from packages/frontend-core/src/api/routes.js
rename to packages/frontend-core/src/api/routes.ts
index 28e206debc..7d2df98b57 100644
--- a/packages/frontend-core/src/api/routes.js
+++ b/packages/frontend-core/src/api/routes.ts
@@ -1,4 +1,12 @@
-export const buildRouteEndpoints = API => ({
+import { BaseAPIClient } from "./types"
+
+export interface RouteEndpoints {
+  // Missing request or response types
+  fetchClientAppRoutes: () => Promise<{ routes: any }>
+  fetchAppRoutes: () => Promise<{ routes: any }>
+}
+
+export const buildRouteEndpoints = (API: BaseAPIClient): RouteEndpoints => ({
   /**
    * Fetches available routes for the client app.
    */
diff --git a/packages/frontend-core/src/api/types.ts b/packages/frontend-core/src/api/types.ts
index 176e7f6a32..f3cf6b034f 100644
--- a/packages/frontend-core/src/api/types.ts
+++ b/packages/frontend-core/src/api/types.ts
@@ -22,6 +22,7 @@ import { PluginEndpoins } from "./plugins"
 import { QueryEndpoints } from "./queries"
 import { RelationshipEndpoints } from "./relationships"
 import { RoleEndpoints } from "./roles"
+import { RouteEndpoints } from "./routes"
 
 export enum HTTPMethod {
   POST = "POST",
@@ -115,4 +116,5 @@ export type APIClient = BaseAPIClient &
   PluginEndpoins &
   QueryEndpoints &
   RelationshipEndpoints &
-  RoleEndpoints & { [key: string]: any }
+  RoleEndpoints &
+  RouteEndpoints & { [key: string]: any }