diff --git a/packages/kbn-server-route-repository/src/create_server_route_repository.ts b/packages/kbn-server-route-repository/src/create_server_route_repository.ts
index 021dd35c1025f..5ac89ebcac77f 100644
--- a/packages/kbn-server-route-repository/src/create_server_route_repository.ts
+++ b/packages/kbn-server-route-repository/src/create_server_route_repository.ts
@@ -15,15 +15,23 @@ export function createServerRouteRepository<
   TRouteHandlerResources extends ServerRouteHandlerResources = never,
   TRouteCreateOptions extends ServerRouteCreateOptions = never
 >(): ServerRouteRepository<TRouteHandlerResources, TRouteCreateOptions, {}> {
-  const routes: Record<string, any> = {};
+  let routes: Record<string, any> = {};
 
   return {
     add(route) {
-      routes[route.endpoint] = route;
+      routes = {
+        ...routes,
+        [route.endpoint]: route,
+      };
+
       return this as any;
     },
     merge(repository) {
-      Object.assign(routes, repository.getRoutes());
+      routes = {
+        ...routes,
+        ...Object.fromEntries(repository.getRoutes().map((route) => [route.endpoint, route])),
+      };
+
       return this as any;
     },
     getRoutes: () => Object.values(routes),
diff --git a/x-pack/plugins/apm/public/services/rest/createCallApmApi.ts b/x-pack/plugins/apm/public/services/rest/createCallApmApi.ts
index 5dc2aa6aa30da..9874703b7344d 100644
--- a/x-pack/plugins/apm/public/services/rest/createCallApmApi.ts
+++ b/x-pack/plugins/apm/public/services/rest/createCallApmApi.ts
@@ -6,13 +6,13 @@
  */
 
 import { CoreSetup, CoreStart } from 'kibana/public';
-import {
+import type {
   ClientRequestParamsOf,
   EndpointOf,
-  formatRequest,
   ReturnOf,
   RouteRepositoryClient,
 } from '@kbn/server-route-repository';
+import { formatRequest } from '@kbn/server-route-repository/target/format_request';
 import { FetchOptions } from '../../../common/fetch_options';
 import { callApi } from './callApi';
 // eslint-disable-next-line @kbn/eslint/no-restricted-paths
diff --git a/x-pack/plugins/apm/server/routes/register_routes/index.ts b/x-pack/plugins/apm/server/routes/register_routes/index.ts
index 0eb2928ee32a2..b8fab0cb4932b 100644
--- a/x-pack/plugins/apm/server/routes/register_routes/index.ts
+++ b/x-pack/plugins/apm/server/routes/register_routes/index.ts
@@ -61,6 +61,11 @@ export function registerRoutes({
 
     const { method, pathname } = parseEndpoint(endpoint);
 
+    console.log({
+      method,
+      pathname,
+    });
+
     (router[method] as RouteRegistrar<
       typeof method,
       ApmPluginRequestHandlerContext
diff --git a/x-pack/plugins/apm/server/routes/services.ts b/x-pack/plugins/apm/server/routes/services.ts
index 462200115b4bb..800a5bdcc5d5f 100644
--- a/x-pack/plugins/apm/server/routes/services.ts
+++ b/x-pack/plugins/apm/server/routes/services.ts
@@ -561,7 +561,7 @@ const serviceDependenciesRoute = createApmServerRoute({
     }),
     query: t.intersection([
       t.type({
-        numBuckets: t.number,
+        numBuckets: toNumberRt,
       }),
       environmentRt,
       rangeRt,