diff --git a/src/Umbraco.Cms.Api.Management/Controllers/Culture/AllCultureController.cs b/src/Umbraco.Cms.Api.Management/Controllers/Culture/AllCultureController.cs
index eb5177996aab..be5c32863a4a 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/Culture/AllCultureController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/Culture/AllCultureController.cs
@@ -28,6 +28,8 @@ public AllCultureController(IUmbracoMapper umbracoMapper, ICultureService cultur
     [HttpGet]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(PagedViewModel<CultureReponseModel>), StatusCodes.Status200OK)]
+    [EndpointSummary("Gets a paginated collection of cultures available for creating languages.")]
+    [EndpointDescription("Gets a paginated collection containing the English and localized names of all available cultures.")]
     public Task<PagedViewModel<CultureReponseModel>> GetAll(CancellationToken cancellationToken, int skip = 0, int take = 100)
     {
         CultureInfo[] all = _cultureService.GetValidCultureInfos();
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/ByKeyDataTypeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/ByKeyDataTypeController.cs
index 5418f78a4968..099b663beb3c 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/ByKeyDataTypeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/ByKeyDataTypeController.cs
@@ -1,4 +1,4 @@
-using Asp.Versioning;
+using Asp.Versioning;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Management.ViewModels.DataType;
@@ -24,6 +24,8 @@ public ByKeyDataTypeController(IDataTypeService dataTypeService, IUmbracoMapper
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(DataTypeResponseModel), StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Get a data type by the provided Id.")]
+    [EndpointDescription("Get a data type by using the provided Id and the result returns the data types' properties.")]
     public async Task<IActionResult> ByKey(CancellationToken cancellationToken, Guid id)
     {
         IDataType? dataType = await _dataTypeService.GetAsync(id);
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/ConfigurationDataTypeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/ConfigurationDataTypeController.cs
index f0039b94d6aa..d8ab45a4ffba 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/ConfigurationDataTypeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/ConfigurationDataTypeController.cs
@@ -1,4 +1,4 @@
-using Asp.Versioning;
+using Asp.Versioning;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Options;
@@ -18,6 +18,8 @@ public class ConfigurationDataTypeController : DataTypeControllerBase
     [HttpGet("configuration")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(DatatypeConfigurationResponseModel), StatusCodes.Status200OK)]
+    [EndpointSummary("Gets the data type configuration.")]
+    [EndpointDescription("Gets the data type configuration settings.")]
     public Task<IActionResult> Configuration(CancellationToken cancellationToken)
     {
         var responseModel = new DatatypeConfigurationResponseModel
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/CopyDataTypeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/CopyDataTypeController.cs
index 6bf47269d5ce..1491460ac157 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/CopyDataTypeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/CopyDataTypeController.cs
@@ -29,6 +29,8 @@ public CopyDataTypeController(IDataTypeService dataTypeService, IBackOfficeSecur
     [MapToApiVersion("1.0")]
     [ProducesResponseType(StatusCodes.Status201Created)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Copies a data type.")]
+    [EndpointDescription("Creates a duplicate of an existing data type identified by the provided unique Id. The copied data type will be given a new Id and have ' (copy)' appended to its name. Optionally, the copy can be placed in a specific container by providing a target container Id.")]
     public async Task<IActionResult> Copy(CancellationToken cancellationToken, Guid id, CopyDataTypeRequestModel copyDataTypeRequestModel)
     {
         IDataType? source = await _dataTypeService.GetAsync(id);
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/CreateDataTypeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/CreateDataTypeController.cs
index 1acea3969626..938538414d37 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/CreateDataTypeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/CreateDataTypeController.cs
@@ -33,6 +33,8 @@ public CreateDataTypeController(IDataTypeService dataTypeService, IDataTypePrese
     [ProducesResponseType(StatusCodes.Status201Created)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Creates a new data type.")]
+    [EndpointDescription("Creates a new data type with the provided configuration.")]
     public async Task<IActionResult> Create(CancellationToken cancellationToken, CreateDataTypeRequestModel createDataTypeRequestModel)
     {
         var attempt = await _dataTypePresentationFactory.CreateAsync(createDataTypeRequestModel);
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/DeleteDataTypeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/DeleteDataTypeController.cs
index ba6cb63d8f98..bc2ecae54fe0 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/DeleteDataTypeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/DeleteDataTypeController.cs
@@ -29,6 +29,8 @@ public DeleteDataTypeController(IDataTypeService dataTypeService, IBackOfficeSec
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Deletes a data type.")]
+    [EndpointDescription("Deletes a data type identified by the provided Id.")]
     public async Task<IActionResult> Delete(CancellationToken cancellationToken, Guid id)
     {
         Attempt<IDataType?, DataTypeOperationStatus> result = await _dataTypeService.DeleteAsync(id, CurrentUserKey(_backOfficeSecurityAccessor));
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Filter/FilterDataTypeFilterController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Filter/FilterDataTypeFilterController.cs
index 5b73c7966477..00a8f6064dfb 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Filter/FilterDataTypeFilterController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Filter/FilterDataTypeFilterController.cs
@@ -1,4 +1,4 @@
-using Asp.Versioning;
+using Asp.Versioning;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Common.ViewModels.Pagination;
@@ -26,6 +26,8 @@ public FilterDataTypeFilterController(IDataTypeService dataTypeService, IUmbraco
     [HttpGet]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(PagedViewModel<DataTypeItemResponseModel>), StatusCodes.Status200OK)]
+    [EndpointSummary("Gets a filtered collection of data types.")]
+    [EndpointDescription("Filters data types by name, editor UI alias, and editor alias with pagination support.")]
     public async Task<IActionResult> Filter(
         CancellationToken cancellationToken,
         int skip = 0,
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/ByKeyDataTypeFolderController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/ByKeyDataTypeFolderController.cs
index 50f71f7a080e..c7645fa2d486 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/ByKeyDataTypeFolderController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/ByKeyDataTypeFolderController.cs
@@ -1,4 +1,4 @@
-using Asp.Versioning;
+using Asp.Versioning;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Management.ViewModels.Folder;
@@ -21,5 +21,7 @@ public ByKeyDataTypeFolderController(
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(FolderResponseModel), StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Gets a data type folder.")]
+    [EndpointDescription("Gets a data type folder by identified by the provided Id. The result returns the folder's properties.")]
     public async Task<IActionResult> ByKey(CancellationToken cancellationToken, Guid id) => await GetFolderAsync(id);
 }
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/CreateDataTypeFolderController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/CreateDataTypeFolderController.cs
index 9de52883003f..6d108c1d1121 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/CreateDataTypeFolderController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/CreateDataTypeFolderController.cs
@@ -1,4 +1,4 @@
-using Asp.Versioning;
+using Asp.Versioning;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Management.ViewModels.Folder;
@@ -22,6 +22,8 @@ public CreateDataTypeFolderController(
     [ProducesResponseType(StatusCodes.Status201Created)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Creates a data type folder.")]
+    [EndpointDescription("Creates a data type folder with the details provided in the request model.")]
     public async Task<IActionResult> Create(CancellationToken cancellationToken, CreateFolderRequestModel createFolderRequestModel)
         => await CreateFolderAsync<ByKeyDataTypeFolderController>(
             createFolderRequestModel,
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/DeleteDataTypeFolderController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/DeleteDataTypeFolderController.cs
index 5b9848d6094c..358f69038ee8 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/DeleteDataTypeFolderController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/DeleteDataTypeFolderController.cs
@@ -1,4 +1,4 @@
-using Asp.Versioning;
+using Asp.Versioning;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Core.Security;
@@ -21,5 +21,7 @@ public DeleteDataTypeFolderController(
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Deletes a data type folder.")]
+    [EndpointDescription("Deletes a data type folder identified by the provided Id.")]
     public async Task<IActionResult> Delete(CancellationToken cancellationToken, Guid id) => await DeleteFolderAsync(id);
 }
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/UpdateDataTypeFolderController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/UpdateDataTypeFolderController.cs
index fa3eba2feb5f..ebab1d578e26 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/UpdateDataTypeFolderController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Folder/UpdateDataTypeFolderController.cs
@@ -1,4 +1,4 @@
-using Asp.Versioning;
+using Asp.Versioning;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Management.ViewModels.Folder;
@@ -22,6 +22,8 @@ public UpdateDataTypeFolderController(
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Updates a data type folder.")]
+    [EndpointDescription("Updates a data type folder identified by the provided Id with the details provided in the request model.")]
     public async Task<IActionResult> Update(
         CancellationToken cancellationToken,
         Guid id,
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/IsUsedDataTypeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/IsUsedDataTypeController.cs
index 0a9a048389b5..64d54941e103 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/IsUsedDataTypeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/IsUsedDataTypeController.cs
@@ -21,6 +21,8 @@ public IsUsedDataTypeController(IDataTypeUsageService dataTypeUsageService)
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(bool), StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Check if a data type is used.")]
+    [EndpointDescription("Checks if the data type with the provided Id is used in any content, media, or members.")]
     public async Task<IActionResult> IsUsed(CancellationToken cancellationToken, Guid id)
     {
         Attempt<bool, DataTypeOperationStatus> result = await _dataTypeUsageService.HasSavedValuesAsync(id);
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Item/ItemDatatypeItemController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Item/ItemDatatypeItemController.cs
index 2865badec04f..a333f3cb6bde 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Item/ItemDatatypeItemController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Item/ItemDatatypeItemController.cs
@@ -1,4 +1,4 @@
-using Asp.Versioning;
+using Asp.Versioning;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Management.ViewModels.DataType.Item;
@@ -23,6 +23,8 @@ public ItemDatatypeItemController(IDataTypeService dataTypeService, IUmbracoMapp
     [HttpGet]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(IEnumerable<DataTypeItemResponseModel>), StatusCodes.Status200OK)]
+    [EndpointSummary("Gets a collection of data type items.")]
+    [EndpointDescription("Get a collection of data type items identified by the provided Ids. Each result contains the data types' properties.")]
     public async Task<IActionResult> Item(
         CancellationToken cancellationToken,
         [FromQuery(Name = "id")] HashSet<Guid> ids)
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Item/SearchDataTypeItemController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Item/SearchDataTypeItemController.cs
index 7e2ded6564f4..8e4d69242e5e 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Item/SearchDataTypeItemController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Item/SearchDataTypeItemController.cs
@@ -1,4 +1,4 @@
-using Asp.Versioning;
+using Asp.Versioning;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Umbraco.Cms.Api.Management.ViewModels.DataType.Item;
@@ -26,6 +26,8 @@ public SearchDataTypeItemController(IEntitySearchService entitySearchService, ID
     [HttpGet("search")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(PagedModel<DataTypeItemResponseModel>), StatusCodes.Status200OK)]
+    [EndpointSummary("Search data types by query.")]
+    [EndpointDescription("Gets a paged collection of data type items identified by provided query.")]
     public async Task<IActionResult> Search(CancellationToken cancellationToken, string query, int skip = 0, int take = 100)
     {
         PagedModel<IEntitySlim> searchResult = _entitySearchService.Search(UmbracoObjectTypes.DataType, query, skip, take);
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/MoveDataTypeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/MoveDataTypeController.cs
index e8f5230463a7..36ce835dcd7c 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/MoveDataTypeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/MoveDataTypeController.cs
@@ -29,6 +29,8 @@ public MoveDataTypeController(IDataTypeService dataTypeService, IBackOfficeSecur
     [MapToApiVersion("1.0")]
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Moves a data type.")]
+    [EndpointDescription("Moves an existing data type identified by Id to a different container. The target container Id must be provided in the request model.")]
     public async Task<IActionResult> Move(CancellationToken cancellationToken, Guid id, MoveDataTypeRequestModel moveDataTypeRequestModel)
     {
         IDataType? source = await _dataTypeService.GetAsync(id);
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/References/ReferencedByDataTypeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/References/ReferencedByDataTypeController.cs
index b36815d408ee..49b7af54ecea 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/References/ReferencedByDataTypeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/References/ReferencedByDataTypeController.cs
@@ -27,6 +27,8 @@ public ReferencedByDataTypeController(IDataTypeService dataTypeService, IRelatio
     [HttpGet("{id:guid}/referenced-by")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(PagedViewModel<IReferenceResponseModel>), StatusCodes.Status200OK)]
+    [EndpointSummary("Gets a paged collection of entities that are referenced by a data type.")]
+    [EndpointDescription("Gets a paged collection of entities that are referenced by the data type with the provided Id, so you can see where it is being used.")]
     public async Task<ActionResult<PagedViewModel<IReferenceResponseModel>>> ReferencedBy(
         CancellationToken cancellationToken,
         Guid id,
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/AncestorsDataTypeTreeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/AncestorsDataTypeTreeController.cs
index 15a1c749f517..c6f7390732b5 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/AncestorsDataTypeTreeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/AncestorsDataTypeTreeController.cs
@@ -26,6 +26,8 @@ public AncestorsDataTypeTreeController(IEntityService entityService, FlagProvide
     [HttpGet("ancestors")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(IEnumerable<DataTypeTreeItemResponseModel>), StatusCodes.Status200OK)]
+    [EndpointSummary("Gets a collection of ancestor data type folders.")]
+    [EndpointDescription("Gets a collection of data type folders that are ancestors to the provided Id. The result returns the ancestor folders' properties.")]
     public async Task<ActionResult<IEnumerable<DataTypeTreeItemResponseModel>>> Ancestors(CancellationToken cancellationToken, Guid descendantId)
         => await GetAncestors(descendantId);
 }
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/ChildrenDataTypeTreeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/ChildrenDataTypeTreeController.cs
index 6b9e0611aace..25fbd906ccc4 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/ChildrenDataTypeTreeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/ChildrenDataTypeTreeController.cs
@@ -27,6 +27,8 @@ public ChildrenDataTypeTreeController(IEntityService entityService, FlagProvider
     [HttpGet("children")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(PagedViewModel<DataTypeTreeItemResponseModel>), StatusCodes.Status200OK)]
+    [EndpointSummary("Gets a collection of data type tree child items.")]
+    [EndpointDescription("Gets a paged collection of data type tree items that are children of the provided parent Id. The collection can be optionally filtered to return only folder, or folders and data types.  The result returns the data type tree items' properties.")]
     public async Task<ActionResult<PagedViewModel<DataTypeTreeItemResponseModel>>> Children(CancellationToken cancellationToken, Guid parentId, int skip = 0, int take = 100, bool foldersOnly = false)
     {
         RenderFoldersOnly(foldersOnly);
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/RootDataTypeTreeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/RootDataTypeTreeController.cs
index d4b5e5ef8743..94bf8dd31502 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/RootDataTypeTreeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/RootDataTypeTreeController.cs
@@ -27,6 +27,8 @@ public RootDataTypeTreeController(IEntityService entityService, FlagProviderColl
     [HttpGet("root")]
     [MapToApiVersion("1.0")]
     [ProducesResponseType(typeof(PagedViewModel<DataTypeTreeItemResponseModel>), StatusCodes.Status200OK)]
+    [EndpointSummary("Gets a collection of data type items from the root of the data type tree.")]
+    [EndpointDescription("Gets a paged collection of data type items from the root of the data type tree. The collection can be optionally filtered to return only folder, or folders and data types. The result returns the data type tree items' properties.")]
     public async Task<ActionResult<PagedViewModel<DataTypeTreeItemResponseModel>>> Root(CancellationToken cancellationToken, int skip = 0, int take = 100, bool foldersOnly = false)
     {
         RenderFoldersOnly(foldersOnly);
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/SiblingsDataTypeTreeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/SiblingsDataTypeTreeController.cs
index 8cd7577a96eb..b11650f6b320 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/SiblingsDataTypeTreeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/Tree/SiblingsDataTypeTreeController.cs
@@ -24,6 +24,8 @@ public SiblingsDataTypeTreeController(IEntityService entityService, FlagProvider
 
     [HttpGet("siblings")]
     [ProducesResponseType(typeof(SubsetViewModel<DataTypeTreeItemResponseModel>), StatusCodes.Status200OK)]
+    [EndpointSummary("Gets a collection of data type tree sibling items.")]
+    [EndpointDescription("Gets a paged collection of data type tree items that are siblings of the provided parent Id. The collection can be optionally filtered to return only folder, or folders and data types.  The result returns the data type tree items' properties.")]
     public async Task<ActionResult<SubsetViewModel<DataTypeTreeItemResponseModel>>> Siblings(CancellationToken cancellationToken, Guid target, int before, int after, bool foldersOnly = false)
     {
         RenderFoldersOnly(foldersOnly);
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DataType/UpdateDataTypeController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DataType/UpdateDataTypeController.cs
index 4b67b55653ce..fb434697e8ee 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DataType/UpdateDataTypeController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DataType/UpdateDataTypeController.cs
@@ -33,6 +33,8 @@ public UpdateDataTypeController(IDataTypeService dataTypeService, IBackOfficeSec
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
+    [EndpointSummary("Updates a data type.")]
+    [EndpointDescription("Updates a data type by identified by the provided Id with the details provided in the request model.")]
     public async Task<IActionResult> Update(CancellationToken cancellationToken, Guid id, UpdateDataTypeRequestModel updateDataTypeViewModel)
     {
         IDataType? current = await _dataTypeService.GetAsync(id);
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/AllDocumentVersionController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/AllDocumentVersionController.cs
index a09554756e77..73efbb71b28b 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/AllDocumentVersionController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/AllDocumentVersionController.cs
@@ -31,6 +31,8 @@ public AllDocumentVersionController(
     [ProducesResponseType(typeof(PagedViewModel<DocumentVersionItemResponseModel>), StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
+    [EndpointSummary("Gets a paginated collection of versions for a specific document.")]
+    [EndpointDescription("Gets a paginated collection of versions for a specific document and optional culture. Each result describes the version and includes details of the document type, editor, version date, and published status.")]
     public async Task<IActionResult> All(
         CancellationToken cancellationToken,
         [Required] Guid documentId,
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/ByKeyDocumentVersionController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/ByKeyDocumentVersionController.cs
index fa44d7a61ce1..ee17c05a21de 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/ByKeyDocumentVersionController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/ByKeyDocumentVersionController.cs
@@ -29,6 +29,8 @@ public ByKeyDocumentVersionController(
     [ProducesResponseType(typeof(DocumentVersionResponseModel), StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
+    [EndpointSummary("Gets a specific document version.")]
+    [EndpointDescription("Gets a specific document version by its Id. If found, the result describes the version and includes details of the document type, editor, version date, and published status.")]
     public async Task<IActionResult> ByKey(CancellationToken cancellationToken, Guid id)
     {
         Attempt<IContent?, ContentVersionOperationStatus> attempt =
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/RollbackDocumentVersionController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/RollbackDocumentVersionController.cs
index 64f2f09bb3b5..a1b678a5f23a 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/RollbackDocumentVersionController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/RollbackDocumentVersionController.cs
@@ -36,6 +36,8 @@ public RollbackDocumentVersionController(
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
+    [EndpointSummary("Rolls back a document to a specific version.")]
+    [EndpointDescription("Rolls back a document to the version indicated by the provided Id. This will archive the current version of the document and publish the provided one.")]
     public async Task<IActionResult> Rollback(CancellationToken cancellationToken, Guid id, string? culture)
     {
         Attempt<IContent?, ContentVersionOperationStatus> getContentAttempt =
diff --git a/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/UpdatePreventCleanupDocumentVersionController.cs b/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/UpdatePreventCleanupDocumentVersionController.cs
index 68f4a15b821f..be565b684739 100644
--- a/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/UpdatePreventCleanupDocumentVersionController.cs
+++ b/src/Umbraco.Cms.Api.Management/Controllers/DocumentVersion/UpdatePreventCleanupDocumentVersionController.cs
@@ -27,6 +27,8 @@ public UpdatePreventCleanupDocumentVersionController(
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status404NotFound)]
     [ProducesResponseType(typeof(ProblemDetails), StatusCodes.Status400BadRequest)]
+    [EndpointSummary("Sets the prevent clean up status for a document version.")]
+    [EndpointDescription("Sets the prevent clean up boolean status for a document version to the provided value. This controls whether the version will be a candidate for removal in content history clean up.")]
     public async Task<IActionResult> Set(CancellationToken cancellationToken, Guid id, bool preventCleanup)
     {
         Attempt<ContentVersionOperationStatus> attempt =