diff --git a/src/Microsoft.AspNetCore.Mvc.Core/ActionNameAttribute.cs b/src/Microsoft.AspNetCore.Mvc.Core/ActionNameAttribute.cs
index 411bbe2e9b..5d8dfa9a76 100644
--- a/src/Microsoft.AspNetCore.Mvc.Core/ActionNameAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Core/ActionNameAttribute.cs
@@ -5,14 +5,24 @@ using System;
 
 namespace Microsoft.AspNetCore.Mvc
 {
+    /// <summary>
+    /// Specifies the name of an action.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
     public sealed class ActionNameAttribute : Attribute
     {
+        /// <summary>
+        /// Initializes a new <see cref="ActionNameAttribute"/> instance.
+        /// </summary>
+        /// <param name="name">The name of the action.</param>
         public ActionNameAttribute(string name)
         {
             Name = name;
         }
 
+        /// <summary>
+        /// Gets the name of the action.
+        /// </summary>
         public string Name { get; private set; }
     }
 }
\ No newline at end of file
diff --git a/src/Microsoft.AspNetCore.Mvc.Core/AreaAttribute.cs b/src/Microsoft.AspNetCore.Mvc.Core/AreaAttribute.cs
index 09f860a740..8c1cfe42b2 100644
--- a/src/Microsoft.AspNetCore.Mvc.Core/AreaAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Core/AreaAttribute.cs
@@ -6,9 +6,16 @@ using Microsoft.AspNetCore.Mvc.Routing;
 
 namespace Microsoft.AspNetCore.Mvc
 {
+    /// <summary>
+    /// Specifies the area containing a controller or action.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
     public class AreaAttribute : RouteValueAttribute
     {
+        /// <summary>
+        /// Initializes a new <see cref="AreaAttribute"/> instance.
+        /// </summary>
+        /// <param name="areaName">The area containing the controller or action.</param>
         public AreaAttribute(string areaName)
             : base("area", areaName)
         {
diff --git a/src/Microsoft.AspNetCore.Mvc.Core/FromServicesAttribute.cs b/src/Microsoft.AspNetCore.Mvc.Core/FromServicesAttribute.cs
index bd2af4a09f..271ae181f2 100644
--- a/src/Microsoft.AspNetCore.Mvc.Core/FromServicesAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Core/FromServicesAttribute.cs
@@ -12,7 +12,7 @@ namespace Microsoft.AspNetCore.Mvc
     /// <example>
     /// In this example an implementation of IProductModelRequestService is registered as a service.
     /// Then in the GetProduct action, the parameter is bound to an instance of IProductModelRequestService
-    /// which is resolved from the the request services.
+    /// which is resolved from the request services.
     ///
     /// <code>
     /// [HttpGet]
@@ -21,7 +21,7 @@ namespace Microsoft.AspNetCore.Mvc
     ///     return productModelReqest.Value;
     /// }
     /// </code>
-    /// </example> 
+    /// </example>
     [AttributeUsage(AttributeTargets.Parameter, AllowMultiple = false, Inherited = true)]
     public class FromServicesAttribute : Attribute, IBindingSourceMetadata
     {
diff --git a/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindNeverAttribute.cs b/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindNeverAttribute.cs
index e054af4295..4d496dc26c 100644
--- a/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindNeverAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindNeverAttribute.cs
@@ -5,9 +5,15 @@ using System;
 
 namespace Microsoft.AspNetCore.Mvc.ModelBinding
 {
+    /// <summary>
+    /// Indicates that the property should be excluded from model binding.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Property, AllowMultiple = false, Inherited = true)]
     public sealed class BindNeverAttribute : BindingBehaviorAttribute
     {
+        /// <summary>
+        /// Initializes a new <see cref="BindNeverAttribute"/> instance.
+        /// </summary>
         public BindNeverAttribute()
             : base(BindingBehavior.Never)
         {
diff --git a/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindRequiredAttribute.cs b/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindRequiredAttribute.cs
index 3bb5255ae1..f374bb5bc1 100644
--- a/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindRequiredAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindRequiredAttribute.cs
@@ -5,9 +5,15 @@ using System;
 
 namespace Microsoft.AspNetCore.Mvc.ModelBinding
 {
+    /// <summary>
+    /// Indicates that the property is required for model binding.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Property, AllowMultiple = false, Inherited = true)]
     public sealed class BindRequiredAttribute : BindingBehaviorAttribute
     {
+        /// <summary>
+        /// Initializes a new <see cref="BindRequiredAttribute"/> instance.
+        /// </summary>
         public BindRequiredAttribute()
             : base(BindingBehavior.Required)
         {
diff --git a/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindingBehavior.cs b/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindingBehavior.cs
index f97632bed4..1a9bde1fb8 100644
--- a/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindingBehavior.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindingBehavior.cs
@@ -3,10 +3,24 @@
 
 namespace Microsoft.AspNetCore.Mvc.ModelBinding
 {
+    /// <summary>
+    /// Enumerates behavior options of the model binding system.
+    /// </summary>
     public enum BindingBehavior
     {
+        /// <summary>
+        /// The property should be model bound if a value is available from the value provider.
+        /// </summary>
         Optional = 0,
+
+        /// <summary>
+        /// The property should be excluded from model binding.
+        /// </summary>
         Never,
+
+        /// <summary>
+        /// The property is required for model binding.
+        /// </summary>
         Required
     }
 }
diff --git a/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindingBehaviorAttribute.cs b/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindingBehaviorAttribute.cs
index 3bfeef6884..302d9fe8c8 100644
--- a/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindingBehaviorAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Core/ModelBinding/BindingBehaviorAttribute.cs
@@ -5,14 +5,24 @@ using System;
 
 namespace Microsoft.AspNetCore.Mvc.ModelBinding
 {
+    /// <summary>
+    /// Specifies the <see cref="BindingBehavior"/> that should be applied.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Property, AllowMultiple = false, Inherited = true)]
     public class BindingBehaviorAttribute : Attribute
     {
+        /// <summary>
+        /// Initializes a new <see cref="BindingBehaviorAttribute"/> instance.
+        /// </summary>
+        /// <param name="behavior">The <see cref="BindingBehavior"/> to apply.</param>
         public BindingBehaviorAttribute(BindingBehavior behavior)
         {
             Behavior = behavior;
         }
 
+        /// <summary>
+        /// Gets the <see cref="BindingBehavior"/> to apply.
+        /// </summary>
         public BindingBehavior Behavior { get; private set; }
     }
 }
diff --git a/src/Microsoft.AspNetCore.Mvc.Core/NonActionAttribute.cs b/src/Microsoft.AspNetCore.Mvc.Core/NonActionAttribute.cs
index 8df8a93844..aa2cec5f5b 100644
--- a/src/Microsoft.AspNetCore.Mvc.Core/NonActionAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Core/NonActionAttribute.cs
@@ -5,6 +5,9 @@ using System;
 
 namespace Microsoft.AspNetCore.Mvc
 {
+    /// <summary>
+    /// Indicates that a controller method is not an action method.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
     public sealed class NonActionAttribute : Attribute
     {
diff --git a/src/Microsoft.AspNetCore.Mvc.Core/Routing/RouteValueAttribute.cs b/src/Microsoft.AspNetCore.Mvc.Core/Routing/RouteValueAttribute.cs
index 5131b3fbf4..8edbdbc5ec 100644
--- a/src/Microsoft.AspNetCore.Mvc.Core/Routing/RouteValueAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.Core/Routing/RouteValueAttribute.cs
@@ -6,14 +6,18 @@ using System;
 namespace Microsoft.AspNetCore.Mvc.Routing
 {
     /// <summary>
+    /// <para>
     /// An attribute which specifies a required route value for an action or controller.
-    ///
+    /// </para>
+    /// <para>
     /// When placed on an action, the route data of a request must match the expectations of the route
     /// constraint in order for the action to be selected. See <see cref="IRouteValueProvider"/> for
     /// the expectations that must be satisfied by the route data.
-    ///
+    /// </para>
+    /// <para>
     /// When placed on a controller, unless overridden by the action, the constraint applies to all
     /// actions defined by the controller.
+    /// </para>
     /// </summary>
     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = true, Inherited = true)]
     public abstract class RouteValueAttribute : Attribute, IRouteValueProvider
diff --git a/src/Microsoft.AspNetCore.Mvc.ViewFeatures/ViewComponentAttribute.cs b/src/Microsoft.AspNetCore.Mvc.ViewFeatures/ViewComponentAttribute.cs
index 6d4369f3f1..4711975c88 100644
--- a/src/Microsoft.AspNetCore.Mvc.ViewFeatures/ViewComponentAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.ViewFeatures/ViewComponentAttribute.cs
@@ -5,9 +5,15 @@ using System;
 
 namespace Microsoft.AspNetCore.Mvc
 {
+    /// <summary>
+    /// Indicates the class is a view component and optionally specifies the component's name.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
     public class ViewComponentAttribute : Attribute
     {
+        /// <summary>
+        /// Gets or sets the name of the view component.
+        /// </summary>
         public string Name { get; set; }
     }
 }
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiActionConventions.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiActionConventions.cs
index 2ea02d9d91..ab24396dd1 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiActionConventions.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiActionConventions.cs
@@ -3,6 +3,9 @@
 
 namespace Microsoft.AspNetCore.Mvc.WebApiCompatShim
 {
+    /// <summary>
+    /// Indicates actions without attribute routes in a controller use WebAPI routing conventions.
+    /// </summary>
     public interface IUseWebApiActionConventions
     {
     }
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiOverloading.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiOverloading.cs
index d3006079cd..cb92ea4661 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiOverloading.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiOverloading.cs
@@ -3,6 +3,10 @@
 
 namespace Microsoft.AspNetCore.Mvc.WebApiCompatShim
 {
+    /// <summary>
+    /// Indicates actions in a controller should be selected only if all non-optional parameters are satisfied. Applies
+    /// the <see cref="OverloadActionConstraint"/> to all actions in the controller.
+    /// </summary>
     public interface IUseWebApiOverloading
     {
     }
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiParameterConventions.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiParameterConventions.cs
index 8aa7be39a1..58e483dea6 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiParameterConventions.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiParameterConventions.cs
@@ -3,6 +3,10 @@
 
 namespace Microsoft.AspNetCore.Mvc.WebApiCompatShim
 {
+    /// <summary>
+    /// Indicates the model binding system should use WebAPI conventions for parameters of a controller's actions. For
+    /// example, bind simple types from the URI.
+    /// </summary>
     public interface IUseWebApiParameterConventions
     {
     }
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiRoutes.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiRoutes.cs
index 7dbd14cc41..f0efadbd90 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiRoutes.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/IUseWebApiRoutes.cs
@@ -3,6 +3,9 @@
 
 namespace Microsoft.AspNetCore.Mvc.WebApiCompatShim
 {
+    /// <summary>
+    /// Indicates the controller is in the "api" area.
+    /// </summary>
     public interface IUseWebApiRoutes
     {
     }
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiActionConventionsAttribute.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiActionConventionsAttribute.cs
index 2ec6ae6e9a..ef9401f5d4 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiActionConventionsAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiActionConventionsAttribute.cs
@@ -5,6 +5,9 @@ using System;
 
 namespace Microsoft.AspNetCore.Mvc.WebApiCompatShim
 {
+    /// <summary>
+    /// Indicates actions without attribute routes in a controller use WebAPI routing conventions.                                                                                                          w
+    /// </summary>
     [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
     public class UseWebApiActionConventionsAttribute : Attribute, IUseWebApiActionConventions
     {
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiOverloadingAttribute.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiOverloadingAttribute.cs
index 153a772940..f253f0f0bf 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiOverloadingAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiOverloadingAttribute.cs
@@ -5,6 +5,10 @@ using System;
 
 namespace Microsoft.AspNetCore.Mvc.WebApiCompatShim
 {
+    /// <summary>
+    /// Indicates actions in a controller should be selected only if all non-optional parameters are satisfied. Applies
+    /// the <see cref="OverloadActionConstraint"/> to all actions in the controller.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
     public class UseWebApiOverloadingAttribute : Attribute, IUseWebApiOverloading
     {
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiParameterConventionsAttribute.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiParameterConventionsAttribute.cs
index c684a0a3b3..f68ae9d002 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiParameterConventionsAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiParameterConventionsAttribute.cs
@@ -5,6 +5,10 @@ using System;
 
 namespace Microsoft.AspNetCore.Mvc.WebApiCompatShim
 {
+    /// <summary>
+    /// Indicates the model binding system should use WebAPI conventions for parameters of a controller's actions. For
+    /// example, bind simple types from the URI.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
     public class UseWebApiParameterConventionsAttribute : Attribute, IUseWebApiParameterConventions
     {
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiRoutesAttribute.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiRoutesAttribute.cs
index 684490124f..17d14aba37 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiRoutesAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/Conventions/UseWebApiRoutesAttribute.cs
@@ -5,6 +5,9 @@ using System;
 
 namespace Microsoft.AspNetCore.Mvc.WebApiCompatShim
 {
+    /// <summary>
+    /// Indicates the controller is in the "api" area.
+    /// </summary>
     [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
     public class UseWebApiRoutesAttribute : Attribute, IUseWebApiRoutes
     {
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/OverloadActionConstraint.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/OverloadActionConstraint.cs
index 6f894cd3da..041090d37a 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/OverloadActionConstraint.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/OverloadActionConstraint.cs
@@ -14,10 +14,16 @@ using Microsoft.AspNetCore.Routing;
 
 namespace Microsoft.AspNetCore.Mvc.WebApiCompatShim
 {
+    /// <summary>
+    /// An <see cref="IActionConstraint"/> limiting candidate actions to those for which the request satisfies all
+    /// non-optional parameters.
+    /// </summary>
     public class OverloadActionConstraint : IActionConstraint
     {
+        /// <inheritdoc />
         public int Order { get; } = int.MaxValue;
 
+        /// <inheritdoc />
         public bool Accept(ActionConstraintContext context)
         {
             var candidates = context.Candidates.Select(c => new
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/ParameterBinding/FromUriAttribute.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/ParameterBinding/FromUriAttribute.cs
index eb84b10180..0002337087 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/ParameterBinding/FromUriAttribute.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/ParameterBinding/FromUriAttribute.cs
@@ -1,7 +1,6 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.ModelBinding;
 using WebApiShimResources = Microsoft.AspNetCore.Mvc.WebApiCompatShim.Resources;
 
@@ -21,8 +20,10 @@ namespace System.Web.Http
             new BindingSource[] { BindingSource.Path, BindingSource.Query },
             WebApiShimResources.BindingSource_URL);
 
+        /// <inheritdoc />
         public BindingSource BindingSource { get { return FromUriSource; } }
 
+        /// <inheritdoc />
         public bool IsOptional { get; set; }
 
         /// <inheritdoc />
diff --git a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/ParameterBinding/IOptionalBinderMetadata.cs b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/ParameterBinding/IOptionalBinderMetadata.cs
index 16f9abed66..05cfc09d4d 100644
--- a/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/ParameterBinding/IOptionalBinderMetadata.cs
+++ b/src/Microsoft.AspNetCore.Mvc.WebApiCompatShim/ParameterBinding/IOptionalBinderMetadata.cs
@@ -4,14 +4,21 @@
 namespace Microsoft.AspNetCore.Mvc.ModelBinding
 {
     /// <summary>
+    /// <para>
     /// An type that designates an optional parameter for the purposes
-    /// of WebAPI action overloading. Optional parameters do not participate in overloading, and 
+    /// of WebAPI action overloading. Optional parameters do not participate in overloading, and
     /// do not have to have a value for the action to be selected.
-    /// 
+    /// </para>
+    /// <para>
     /// This has no impact when used without WebAPI action overloading.
+    /// </para>
     /// </summary>
     public interface IOptionalBinderMetadata
     {
+        /// <summary>
+        /// Gets a value indicating whether the parameter participates in WebAPI action overloading. If <c>true</c>,
+        /// the parameter does not participate in overloading. Otherwise, it does.
+        /// </summary>
         bool IsOptional { get; }
     }
 }
\ No newline at end of file