diff --git a/.gitea/workflows/branch-build.yml b/.gitea/workflows/branch-build.yml
index e8518ab..b0383c5 100644
--- a/.gitea/workflows/branch-build.yml
+++ b/.gitea/workflows/branch-build.yml
@@ -30,10 +30,9 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Restore tools
+      - name: Prepare environment
         run: |
           set -ex
-          dotnet tool restore -v q
           dotnet tool install dotnet-reportgenerator-globaltool --tool-path /dotnet-tools
           echo "CI_SERVER_HOST=${GITEA_SERVER_URL#https://}" >> "$GITEA_ENV"
 
diff --git a/.gitea/workflows/release-build.yml b/.gitea/workflows/release-build.yml
index 7c739eb..020c1e0 100644
--- a/.gitea/workflows/release-build.yml
+++ b/.gitea/workflows/release-build.yml
@@ -30,10 +30,9 @@ jobs:
         with:
           fetch-depth: 0
 
-      - name: Restore tools
+      - name: Prepare environment
         run: |
           set -ex
-          dotnet tool restore -v q
           dotnet tool install dotnet-reportgenerator-globaltool --tool-path /dotnet-tools
           dotnet tool install docfx --tool-path /dotnet-tools
           echo "CI_SERVER_HOST=${GITEA_SERVER_URL#https://}" >> "$GITEA_ENV"
diff --git a/docs/index.md b/docs/index.md
index c95c8b0..7fd61eb 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -8,6 +8,8 @@ _layout: landing
 
 The available channels are SMS, RCS and WhatsApp Business.
 
+Here you can find the API documentation: https://developer.linkmobility.eu/
+
 ## NuGet packages
 
 Here is an overview of the latest package.
diff --git a/src/LinkMobility/ClientOptions.cs b/src/LinkMobility/ClientOptions.cs
index e346372..892242c 100644
--- a/src/LinkMobility/ClientOptions.cs
+++ b/src/LinkMobility/ClientOptions.cs
@@ -8,13 +8,19 @@ namespace AMWD.Net.Api.LinkMobility
 	public class ClientOptions
 	{
 		/// <summary>
-		/// Gets or sets the default base url for the API.
+		/// Gets or sets the base url for the API.
 		/// </summary>
+		/// <remarks>
+		/// The default base url is <c>https://api.linkmobility.eu/rest/</c>.
+		/// </remarks>
 		public virtual string BaseUrl { get; set; } = "https://api.linkmobility.eu/rest/";
 
 		/// <summary>
 		/// Gets or sets the default timeout for the API.
 		/// </summary>
+		/// <remarks>
+		/// The default timeout is <c>100</c> seconds.
+		/// </remarks>
 		public virtual TimeSpan Timeout { get; set; } = TimeSpan.FromSeconds(100);
 
 		/// <summary>
@@ -28,7 +34,7 @@ namespace AMWD.Net.Api.LinkMobility
 		public virtual IDictionary<string, string> DefaultQueryParams { get; set; } = new Dictionary<string, string>();
 
 		/// <summary>
-		/// Gets or sets a value indicating whether to allow redirects.
+		/// Gets or sets a value indicating whether to follow redirects from the server.
 		/// </summary>
 		public virtual bool AllowRedirects { get; set; }
 
diff --git a/src/LinkMobility/ILinkMobilityClient.cs b/src/LinkMobility/ILinkMobilityClient.cs
index e152d13..694f29d 100644
--- a/src/LinkMobility/ILinkMobilityClient.cs
+++ b/src/LinkMobility/ILinkMobilityClient.cs
@@ -9,7 +9,7 @@ namespace AMWD.Net.Api.LinkMobility
 	public interface ILinkMobilityClient
 	{
 		/// <summary>
-		/// Performs a POST request to the LINK mobility API.
+		/// Performs a POST request to the LINK Mobility API.
 		/// </summary>
 		/// <typeparam name="TResponse">The type of the response.</typeparam>
 		/// <typeparam name="TRequest">The type of the request.</typeparam>
diff --git a/src/LinkMobility/LinkMobilityClient.cs b/src/LinkMobility/LinkMobilityClient.cs
index 6dcaef4..5bfff33 100644
--- a/src/LinkMobility/LinkMobilityClient.cs
+++ b/src/LinkMobility/LinkMobilityClient.cs
@@ -27,7 +27,7 @@ namespace AMWD.Net.Api.LinkMobility
 		/// <param name="username">The username used for basic authentication.</param>
 		/// <param name="password">The password used for basic authentication.</param>
 		/// <param name="clientOptions">Optional configuration settings for the client.</param>
-		/// <param name="httpClient">Optional <see cref="HttpClient"/> instance if you want a custom <see cref="HttpMessageHandler"/> implemented.</param>
+		/// <param name="httpClient">Optional <see cref="HttpClient"/> instance if you want a custom implementation.</param>
 		public LinkMobilityClient(string username, string password, ClientOptions? clientOptions = null, HttpClient? httpClient = null)
 			: this(new BasicAuthentication(username, password), clientOptions, httpClient)
 		{
@@ -38,7 +38,7 @@ namespace AMWD.Net.Api.LinkMobility
 		/// </summary>
 		/// <param name="token">The bearer token used for authentication.</param>
 		/// <param name="clientOptions">Optional configuration settings for the client.</param>
-		/// <param name="httpClient">Optional <see cref="HttpClient"/> instance if you want a custom <see cref="HttpMessageHandler"/> implemented.</param>
+		/// <param name="httpClient">Optional <see cref="HttpClient"/> instance if you want a custom implementation.</param>
 		public LinkMobilityClient(string token, ClientOptions? clientOptions = null, HttpClient? httpClient = null)
 			: this(new AccessTokenAuthentication(token), clientOptions, httpClient)
 		{
@@ -50,7 +50,7 @@ namespace AMWD.Net.Api.LinkMobility
 		/// </summary>
 		/// <param name="authentication">The authentication mechanism used to authorize requests.</param>
 		/// <param name="clientOptions">Optional client configuration settings.</param>
-		/// <param name="httpClient">Optional <see cref="HttpClient"/> instance if you want a custom <see cref="HttpMessageHandler"/> implemented.</param>
+		/// <param name="httpClient">Optional <see cref="HttpClient"/> instance if you want a custom implementation.</param>
 		public LinkMobilityClient(IAuthentication authentication, ClientOptions? clientOptions = null, HttpClient? httpClient = null)
 		{
 			if (authentication == null)
@@ -66,7 +66,8 @@ namespace AMWD.Net.Api.LinkMobility
 		}
 
 		/// <summary>
-		/// Disposes of the resources used by the <see cref="LinkMobilityClient"/> object.
+		/// Disposes all resources used by the <see cref="LinkMobilityClient"/> object.
+		/// This includes the <see cref="HttpClient"/> whether it was injected or created internally.
 		/// </summary>
 		public void Dispose()
 		{
diff --git a/src/LinkMobility/Utils/Validation.cs b/src/LinkMobility/Utils/Validation.cs
index 6cd199f..822bd9c 100644
--- a/src/LinkMobility/Utils/Validation.cs
+++ b/src/LinkMobility/Utils/Validation.cs
@@ -12,6 +12,13 @@ namespace AMWD.Net.Api.LinkMobility.Utils
 		/// <br/>
 		/// See <see href="https://en.wikipedia.org/wiki/MSISDN">Wikipedia: MSISDN</see> for more information.
 		/// </summary>
+		/// <remarks>
+		/// It comes down to a string of digits with a length between 8 and 15, starting with a non-zero digit.
+		/// This is a common format for international phone numbers, where the first few digits represent the country code, followed by the national number.
+		/// A leading <c>+</c> is has to be removed (not part of the <see href="https://en.wikipedia.org/wiki/E.164">E.164</see>).
+		/// <br/>
+		/// Regex (inside): <c>^[1-9][0-9]{7,14}$</c>
+		/// </remarks>
 		/// <param name="msisdn">The string to validate.</param>
 		/// <returns><see langword="true"/> for a valid MSISDN number, <see langword="false"/> otherwise.</returns>
 		public static bool IsValidMSISDN(string msisdn)