diff --git a/x-pack/plugins/fleet/common/types/rest_spec/epm.ts b/x-pack/plugins/fleet/common/types/rest_spec/epm.ts
index 61b2a0bc3e474..e9df09206ca6f 100644
--- a/x-pack/plugins/fleet/common/types/rest_spec/epm.ts
+++ b/x-pack/plugins/fleet/common/types/rest_spec/epm.ts
@@ -61,7 +61,7 @@ interface InstalledPackage {
 export interface GetInstalledPackagesResponse {
   items: InstalledPackage[];
   total: number;
-  pageAfter?: SortResults;
+  searchAfter?: SortResults;
 }
 
 export interface GetEpmDataStreamsResponse {
diff --git a/x-pack/plugins/fleet/server/services/epm/data_streams/get.ts b/x-pack/plugins/fleet/server/services/epm/data_streams/get.ts
index 5043887069fd9..562a8280ca051 100644
--- a/x-pack/plugins/fleet/server/services/epm/data_streams/get.ts
+++ b/x-pack/plugins/fleet/server/services/epm/data_streams/get.ts
@@ -15,10 +15,10 @@ export async function getDataStreams(options: {
   esClient: ElasticsearchClient;
   type?: PackageDataStreamTypes;
   datasetQuery?: string;
-  sortDirection: 'asc' | 'desc';
+  sortOrder: 'asc' | 'desc';
   uncategorisedOnly: boolean;
 }) {
-  const { esClient, type, datasetQuery, uncategorisedOnly, sortDirection } = options;
+  const { esClient, type, datasetQuery, uncategorisedOnly, sortOrder } = options;
 
   const allDataStreams = await dataStreamService.getMatchingDataStreams(esClient, {
     type: type ? type : '*',
@@ -39,7 +39,7 @@ export async function getDataStreams(options: {
     return a.name.localeCompare(b.name);
   });
 
-  const dataStreams = sortDirection === 'asc' ? sortedDataStreams : sortedDataStreams.reverse();
+  const dataStreams = sortOrder === 'asc' ? sortedDataStreams : sortedDataStreams.reverse();
 
   return {
     items: dataStreams,
diff --git a/x-pack/plugins/fleet/server/services/epm/packages/get.ts b/x-pack/plugins/fleet/server/services/epm/packages/get.ts
index 8422d47c1e190..036ec2512a4a9 100644
--- a/x-pack/plugins/fleet/server/services/epm/packages/get.ts
+++ b/x-pack/plugins/fleet/server/services/epm/packages/get.ts
@@ -152,22 +152,23 @@ export async function getPackages(
 
 export async function getInstalledPackages(options: {
   savedObjectsClient: SavedObjectsClientContract;
-  type?: PackageDataStreamTypes;
+  dataStreamType?: PackageDataStreamTypes;
   nameQuery?: string;
-  pageAfter?: SortResults;
-  pageSize: number;
-  sortDirection: 'asc' | 'desc';
+  searchAfter?: SortResults;
+  perPage: number;
+  sortOrder: 'asc' | 'desc';
 }) {
-  const { savedObjectsClient, pageAfter, pageSize, nameQuery, sortDirection, type } = options;
+  const { savedObjectsClient, searchAfter, perPage, nameQuery, sortOrder, dataStreamType } =
+    options;
 
   const packageSavedObjects = await savedObjectsClient.find<Installation>({
     type: PACKAGES_SAVED_OBJECT_TYPE,
     // Pagination
-    perPage: pageSize,
-    ...(pageAfter && { searchAfter: pageAfter }),
+    perPage,
+    ...(searchAfter && { searchAfter }),
     // Sort
     sortField: 'name',
-    sortOrder: sortDirection,
+    sortOrder,
     // Name filter
     ...(nameQuery && { searchFields: ['name'] }),
     ...(nameQuery && { search: `${nameQuery}* | ${nameQuery}` }),
@@ -184,12 +185,12 @@ export async function getInstalledPackages(options: {
         nodeBuilder.is('type', 'index_template')
       ),
       // "Type" filter
-      ...(type
+      ...(dataStreamType
         ? [
             buildFunctionNode(
               'nested',
               `${PACKAGES_SAVED_OBJECT_TYPE}.attributes.installed_es`,
-              nodeBuilder.is('id', buildWildcardNode(`${type}-*`))
+              nodeBuilder.is('id', buildWildcardNode(`${dataStreamType}-*`))
             ),
           ]
         : []),
@@ -212,10 +213,10 @@ export async function getInstalledPackages(options: {
         };
       })
       .filter((stream) => {
-        if (!type) {
+        if (!dataStreamType) {
           return true;
         } else {
-          return stream.title.startsWith(`${type}-`);
+          return stream.title.startsWith(`${dataStreamType}-`);
         }
       });
 
@@ -230,7 +231,7 @@ export async function getInstalledPackages(options: {
   return {
     items: integrations,
     total: packageSavedObjects.total,
-    pageAfter: packageSavedObjects.saved_objects.at(-1)?.sort, // Enable ability to use searchAfter in subsequent queries
+    searchAfter: packageSavedObjects.saved_objects.at(-1)?.sort, // Enable ability to use searchAfter in subsequent queries
   };
 }
 
diff --git a/x-pack/plugins/fleet/server/types/rest_spec/epm.ts b/x-pack/plugins/fleet/server/types/rest_spec/epm.ts
index a22b982792c3e..dcdb440d2d424 100644
--- a/x-pack/plugins/fleet/server/types/rest_spec/epm.ts
+++ b/x-pack/plugins/fleet/server/types/rest_spec/epm.ts
@@ -26,7 +26,7 @@ export const GetPackagesRequestSchema = {
 
 export const GetInstalledPackagesRequestSchema = {
   query: schema.object({
-    type: schema.maybe(
+    dataStreamType: schema.maybe(
       schema.oneOf([
         schema.literal('logs'),
         schema.literal('metrics'),
@@ -36,9 +36,9 @@ export const GetInstalledPackagesRequestSchema = {
       ])
     ),
     nameQuery: schema.maybe(schema.string()),
-    pageAfter: schema.maybe(schema.arrayOf(schema.oneOf([schema.string(), schema.number()]))),
-    pageSize: schema.number({ defaultValue: 30 }),
-    sortDirection: schema.oneOf([schema.literal('asc'), schema.literal('desc')], {
+    searchAfter: schema.maybe(schema.arrayOf(schema.oneOf([schema.string(), schema.number()]))),
+    perPage: schema.number({ defaultValue: 30 }),
+    sortOrder: schema.oneOf([schema.literal('asc'), schema.literal('desc')], {
       defaultValue: 'asc',
     }),
   }),
@@ -56,7 +56,7 @@ export const GetDataStreamsRequestSchema = {
       ])
     ),
     datasetQuery: schema.maybe(schema.string()),
-    sortDirection: schema.oneOf([schema.literal('asc'), schema.literal('desc')], {
+    sortOrder: schema.oneOf([schema.literal('asc'), schema.literal('desc')], {
       defaultValue: 'asc',
     }),
     uncategorisedOnly: schema.boolean({ defaultValue: true }),