diff --git a/Octokit.Reactive/Clients/IObservableAssigneesClient.cs b/Octokit.Reactive/Clients/IObservableAssigneesClient.cs
index b47ad18e..4e93269b 100644
--- a/Octokit.Reactive/Clients/IObservableAssigneesClient.cs
+++ b/Octokit.Reactive/Clients/IObservableAssigneesClient.cs
@@ -2,6 +2,12 @@
 
 namespace Octokit.Reactive
 {
+    /// <summary>
+    /// A client for GitHub's Issue Assignees API.
+    /// </summary>
+    /// <remarks>
+    /// See the <a href="http://developer.github.com/v3/issues/assignees/">Issue Assignees API documentation</a> for more information.
+    /// </remarks>
     public interface IObservableAssigneesClient
     {
         /// <summary>
@@ -9,7 +15,7 @@ namespace Octokit.Reactive
         /// </summary>
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="IObservable{User}"/> of <see cref="User"/> representing assignees of specified repository.</returns>
         IObservable<User> GetAllForRepository(string owner, string name);
 
         /// <summary>
@@ -18,7 +24,7 @@ namespace Octokit.Reactive
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
         /// <param name="options">The options to change API's behaviour.</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="IObservable{User}"/> of <see cref="User"/> representing assignees of specified repository.</returns>
         IObservable<User> GetAllForRepository(string owner, string name, ApiOptions options);
 
         /// <summary>
@@ -27,7 +33,7 @@ namespace Octokit.Reactive
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
         /// <param name="assignee">Username of the prospective assignee</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="IObservable{Bool}"/> of <see cref="bool"/> representing is a user is an assignee for a repository.</returns>
         IObservable<bool> CheckAssignee(string owner, string name, string assignee);
     }
 }
diff --git a/Octokit.Reactive/Clients/ObservableAssigneesClient.cs b/Octokit.Reactive/Clients/ObservableAssigneesClient.cs
index de7eb9c9..e243c9a1 100644
--- a/Octokit.Reactive/Clients/ObservableAssigneesClient.cs
+++ b/Octokit.Reactive/Clients/ObservableAssigneesClient.cs
@@ -4,6 +4,12 @@ using Octokit.Reactive.Internal;
 
 namespace Octokit.Reactive
 {
+    /// <summary>
+    /// A client for GitHub's Issue Assignees API.
+    /// </summary>
+    /// <remarks>
+    /// See the <a href="http://developer.github.com/v3/issues/assignees/">Issue Assignees API documentation</a> for more information.
+    /// </remarks>
     public class ObservableAssigneesClient : IObservableAssigneesClient
     {
         readonly IAssigneesClient _client;
@@ -22,7 +28,7 @@ namespace Octokit.Reactive
         /// </summary>
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="IObservable{User}"/> of <see cref="User"/> representing assignees of specified repository.</returns>
         public IObservable<User> GetAllForRepository(string owner, string name)
         {
             Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
@@ -36,8 +42,8 @@ namespace Octokit.Reactive
         /// </summary>
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
-        /// <param name="options">The options to change API's behaviour</param>
-        /// <returns></returns>
+        /// <param name="options">The options to change API's behaviour.</param>
+        /// <returns>A <see cref="IObservable{User}"/> of <see cref="User"/> representing assignees of specified repository.</returns>
         public IObservable<User> GetAllForRepository(string owner, string name, ApiOptions options)
         {
             Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
@@ -53,7 +59,7 @@ namespace Octokit.Reactive
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
         /// <param name="assignee">Username of the prospective assignee</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="IObservable{Bool}"/> of <see cref="bool"/> representing is a user is an assignee for a repository.</returns>
         public IObservable<bool> CheckAssignee(string owner, string name, string assignee)
         {
             Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
diff --git a/Octokit/Clients/AssigneesClient.cs b/Octokit/Clients/AssigneesClient.cs
index 0cd692c7..70fafd39 100644
--- a/Octokit/Clients/AssigneesClient.cs
+++ b/Octokit/Clients/AssigneesClient.cs
@@ -24,7 +24,7 @@ namespace Octokit
         /// </summary>
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="IReadOnlyList{User}"/> of <see cref="User"/> representing assignees of specified repository.</returns>
         public Task<IReadOnlyList<User>> GetAllForRepository(string owner, string name)
         {
             Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
@@ -39,7 +39,7 @@ namespace Octokit
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
         /// <param name="options">The options to change API's response.</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="IReadOnlyList{User}"/> of <see cref="User"/> representing assignees of specified repository.</returns>
         public Task<IReadOnlyList<User>> GetAllForRepository(string owner, string name, ApiOptions options)
         {
             Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
@@ -57,7 +57,7 @@ namespace Octokit
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
         /// <param name="assignee">Username of the prospective assignee</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="bool"/> representing is a user is an assignee for a repository.</returns>
         public async Task<bool> CheckAssignee(string owner, string name, string assignee)
         {
             Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
diff --git a/Octokit/Clients/IAssigneesClient.cs b/Octokit/Clients/IAssigneesClient.cs
index 77d04912..9aba338d 100644
--- a/Octokit/Clients/IAssigneesClient.cs
+++ b/Octokit/Clients/IAssigneesClient.cs
@@ -16,7 +16,7 @@ namespace Octokit
         /// </summary>
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="IReadOnlyList{User}"/> of <see cref="User"/> representing assignees of specified repository.</returns>
         Task<IReadOnlyList<User>> GetAllForRepository(string owner, string name);
 
         /// <summary>
@@ -25,7 +25,7 @@ namespace Octokit
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
         /// <param name="options">The options to change API's response.</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="IReadOnlyList{User}"/> of <see cref="User"/> representing assignees of specified repository.</returns>
         Task<IReadOnlyList<User>> GetAllForRepository(string owner, string name, ApiOptions options);
 
         /// <summary>
@@ -34,7 +34,7 @@ namespace Octokit
         /// <param name="owner">The owner of the repository</param>
         /// <param name="name">The name of the repository</param>
         /// <param name="assignee">Username of the prospective assignee</param>
-        /// <returns></returns>
+        /// <returns>A <see cref="bool"/> representing is a user is an assignee for a repository.</returns>
         Task<bool> CheckAssignee(string owner, string name, string assignee);
     }
 }