diff --git a/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/field_service.ts b/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/field_service.ts
index 3cfb552189062..5827201a63661 100644
--- a/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/field_service.ts
+++ b/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/field_service.ts
@@ -5,7 +5,7 @@
  */
 
 import { cloneDeep } from 'lodash';
-import { Request } from 'src/legacy/server/kbn_server';
+import { SavedObjectsClientContract } from 'kibana/server';
 import {
   Field,
   Aggregation,
@@ -40,22 +40,27 @@ export function fieldServiceProvider(
   indexPattern: string,
   isRollup: boolean,
   callWithRequest: any,
-  request: Request
+  savedObjectsClient: SavedObjectsClientContract
 ) {
-  return new FieldsService(indexPattern, isRollup, callWithRequest, request);
+  return new FieldsService(indexPattern, isRollup, callWithRequest, savedObjectsClient);
 }
 
 class FieldsService {
   private _indexPattern: string;
   private _isRollup: boolean;
   private _callWithRequest: any;
-  private _request: Request;
+  private _savedObjectsClient: SavedObjectsClientContract;
 
-  constructor(indexPattern: string, isRollup: boolean, callWithRequest: any, request: Request) {
+  constructor(
+    indexPattern: string,
+    isRollup: boolean,
+    callWithRequest: any,
+    savedObjectsClient: any
+  ) {
     this._indexPattern = indexPattern;
     this._isRollup = isRollup;
     this._callWithRequest = callWithRequest;
-    this._request = request;
+    this._savedObjectsClient = savedObjectsClient;
   }
 
   private async loadFieldCaps(): Promise<any> {
@@ -104,7 +109,7 @@ class FieldsService {
       const rollupService = await rollupServiceProvider(
         this._indexPattern,
         this._callWithRequest,
-        this._request
+        this._savedObjectsClient
       );
       const rollupConfigs: RollupJob[] | null = await rollupService.getRollupJobs();
 
diff --git a/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/new_job_caps.ts b/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/new_job_caps.ts
index cbb249be09aa0..5b1d44e481d0c 100644
--- a/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/new_job_caps.ts
+++ b/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/new_job_caps.ts
@@ -5,6 +5,7 @@
  */
 
 import { Request } from 'src/legacy/server/kbn_server';
+import { SavedObjectsClientContract } from 'kibana/server';
 import { Aggregation, Field, NewJobCaps } from '../../../../common/types/fields';
 import { fieldServiceProvider } from './field_service';
 
@@ -15,9 +16,15 @@ interface NewJobCapsResponse {
 export function newJobCapsProvider(callWithRequest: any, request: Request) {
   async function newJobCaps(
     indexPattern: string,
-    isRollup: boolean = false
+    isRollup: boolean = false,
+    savedObjectsClient: SavedObjectsClientContract
   ): Promise<NewJobCapsResponse> {
-    const fieldService = fieldServiceProvider(indexPattern, isRollup, callWithRequest, request);
+    const fieldService = fieldServiceProvider(
+      indexPattern,
+      isRollup,
+      callWithRequest,
+      savedObjectsClient
+    );
     const { aggs, fields } = await fieldService.getData();
     convertForStringify(aggs, fields);
 
diff --git a/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/rollup.ts b/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/rollup.ts
index 5f8d8ae5c1f25..11b0802192e1f 100644
--- a/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/rollup.ts
+++ b/x-pack/legacy/plugins/ml/server/models/job_service/new_job_caps/rollup.ts
@@ -4,8 +4,8 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-import { Request } from 'src/legacy/server/kbn_server';
 import { SavedObject } from 'src/core/server';
+import { SavedObjectsClientContract } from 'kibana/server';
 import { FieldId } from '../../../../common/types/fields';
 import { ES_AGGREGATION } from '../../../../common/constants/aggregation_types';
 
@@ -21,9 +21,9 @@ export interface RollupJob {
 export async function rollupServiceProvider(
   indexPattern: string,
   callWithRequest: any,
-  request: Request
+  savedObjectsClient: SavedObjectsClientContract
 ) {
-  const rollupIndexPatternObject = await loadRollupIndexPattern(indexPattern, request);
+  const rollupIndexPatternObject = await loadRollupIndexPattern(indexPattern, savedObjectsClient);
   let jobIndexPatterns: string[] = [indexPattern];
 
   async function getRollupJobs(): Promise<RollupJob[] | null> {
@@ -57,9 +57,8 @@ export async function rollupServiceProvider(
 
 async function loadRollupIndexPattern(
   indexPattern: string,
-  request: Request
+  savedObjectsClient: SavedObjectsClientContract
 ): Promise<SavedObject | null> {
-  const savedObjectsClient = request.getSavedObjectsClient();
   const resp = await savedObjectsClient.find({
     type: 'index-pattern',
     fields: ['title', 'type', 'typeMeta'],
diff --git a/x-pack/legacy/plugins/ml/server/routes/job_service.ts b/x-pack/legacy/plugins/ml/server/routes/job_service.ts
index 5efb59d5372ce..c5656af009bff 100644
--- a/x-pack/legacy/plugins/ml/server/routes/job_service.ts
+++ b/x-pack/legacy/plugins/ml/server/routes/job_service.ts
@@ -351,14 +351,16 @@ export function jobServiceRoutes({ xpackMainPlugin, router }: RouteInitializatio
       path: '/api/ml/jobs/new_job_caps/{indexPattern}',
       validate: {
         params: schema.object({ indexPattern: schema.string() }),
+        query: schema.maybe(schema.object({ rollup: schema.maybe(schema.string()) })),
       },
     },
     licensePreRoutingFactory(xpackMainPlugin, async (context, request, response) => {
       try {
         const { indexPattern } = request.params;
         const isRollup = request.query.rollup === 'true';
+        const savedObjectsClient = context.core.savedObjects.client;
         const { newJobCaps } = jobServiceProvider(context.ml!.mlClient.callAsCurrentUser, request);
-        const resp = await newJobCaps(indexPattern, isRollup);
+        const resp = await newJobCaps(indexPattern, isRollup, savedObjectsClient);
 
         return response.ok({
           body: resp,