diff --git a/client/src/api/schema/schema.ts b/client/src/api/schema/schema.ts
index e2e579704b10..b83b7ada5d58 100644
--- a/client/src/api/schema/schema.ts
+++ b/client/src/api/schema/schema.ts
@@ -321,7 +321,7 @@ export interface paths {
     "/api/file_source_instances": {
         /** Get a list of persisted file source instances defined by the requesting user. */
         get: operations["file_sources__instances_index"];
-        /** Create a user-bound object store. */
+        /** Create a user-bound file source. */
         post: operations["file_sources__create_instance"];
     };
     "/api/file_source_instances/{user_file_source_id}": {
@@ -2672,7 +2672,7 @@ export interface components {
              * Documentation
              * @description Documentation or extended description for this plugin.
              */
-            doc: string;
+            doc?: string | null;
             /**
              * ID
              * @description The `FilesSource` plugin identifier
@@ -5302,7 +5302,7 @@ export interface components {
              * Documentation
              * @description Documentation or extended description for this plugin.
              */
-            doc: string;
+            doc?: string | null;
             /**
              * ID
              * @description The `FilesSource` plugin identifier
@@ -14967,7 +14967,7 @@ export interface operations {
         };
     };
     file_sources__create_instance: {
-        /** Create a user-bound object store. */
+        /** Create a user-bound file source. */
         parameters?: {
             /** @description The user ID that will be used to effectively make this API call. Only admins and designated users can make API calls on behalf of other users. */
             header?: {
@@ -15070,11 +15070,7 @@ export interface operations {
         };
         responses: {
             /** @description Successful Response */
-            200: {
-                content: {
-                    "application/json": Record<string, never>;
-                };
-            };
+            204: never;
             /** @description Validation Error */
             422: {
                 content: {
@@ -20951,11 +20947,7 @@ export interface operations {
         };
         responses: {
             /** @description Successful Response */
-            200: {
-                content: {
-                    "application/json": Record<string, never>;
-                };
-            };
+            204: never;
             /** @description Validation Error */
             422: {
                 content: {
diff --git a/client/src/components/FilesDialog/utilities.ts b/client/src/components/FilesDialog/utilities.ts
index 21aff76122a0..68f1dfd76eac 100644
--- a/client/src/components/FilesDialog/utilities.ts
+++ b/client/src/components/FilesDialog/utilities.ts
@@ -18,7 +18,7 @@ export function fileSourcePluginToItem(plugin: BrowsableFilesSourcePlugin): Sele
     const result = {
         id: plugin.id,
         label: plugin.label,
-        details: plugin.doc,
+        details: plugin.doc || "",
         isLeaf: false,
         url: plugin.uri_root,
     };
diff --git a/lib/galaxy/webapps/galaxy/api/file_sources.py b/lib/galaxy/webapps/galaxy/api/file_sources.py
index bf0862661a3a..eaac53e924eb 100644
--- a/lib/galaxy/webapps/galaxy/api/file_sources.py
+++ b/lib/galaxy/webapps/galaxy/api/file_sources.py
@@ -4,6 +4,8 @@
 from fastapi import (
     Body,
     Path,
+    Response,
+    status,
 )
 
 from galaxy.files.templates import FileSourceTemplateSummaries
@@ -48,7 +50,7 @@ def index_templates(
 
     @router.post(
         "/api/file_source_instances",
-        summary="Create a user-bound object store.",
+        summary="Create a user-bound file source.",
         operation_id="file_sources__create_instance",
     )
     def create(
@@ -98,10 +100,12 @@ def update_instance(
         "/api/file_source_instances/{user_file_source_id}",
         summary="Purge user file source instance.",
         operation_id="file_sources__instances_purge",
+        status_code=status.HTTP_204_NO_CONTENT,
     )
     def purge_instance(
         self,
         trans: ProvidesUserContext = DependsOnTrans,
         user_file_source_id: str = UserFileSourceIdPathParam,
-    ) -> None:
+    ):
         self.file_source_instances_manager.purge_instance(trans, user_file_source_id)
+        return Response(status_code=status.HTTP_204_NO_CONTENT)
diff --git a/lib/galaxy/webapps/galaxy/api/object_store.py b/lib/galaxy/webapps/galaxy/api/object_store.py
index 62890b8c0736..177d5866a7ef 100644
--- a/lib/galaxy/webapps/galaxy/api/object_store.py
+++ b/lib/galaxy/webapps/galaxy/api/object_store.py
@@ -12,6 +12,8 @@
     Body,
     Path,
     Query,
+    Response,
+    status,
 )
 
 from galaxy.exceptions import (
@@ -147,13 +149,15 @@ def update_instance(
         "/api/object_store_instances/{user_object_store_id}",
         summary="Purge user object store instance.",
         operation_id="object_stores__instances_purge",
+        status_code=status.HTTP_204_NO_CONTENT,
     )
     def purge_instance(
         self,
         trans: ProvidesUserContext = DependsOnTrans,
         user_object_store_id: str = UserObjectStoreIdPathParam,
-    ) -> None:
+    ):
         self.object_store_instance_manager.purge_instance(trans, user_object_store_id)
+        return Response(status_code=status.HTTP_204_NO_CONTENT)
 
     @router.get(
         "/api/object_store_templates",