diff --git a/Sources/AmiiboService/Public/Clients/AmiiboLiveClient.swift b/Sources/AmiiboService/Public/Clients/AmiiboLiveClient.swift
index d8c5d6e..8f408da 100644
--- a/Sources/AmiiboService/Public/Clients/AmiiboLiveClient.swift
+++ b/Sources/AmiiboService/Public/Clients/AmiiboLiveClient.swift
@@ -17,6 +17,8 @@ import OpenAPIRuntime
 import OpenAPIURLSession
 
 /// A type that implements a live client to the [Amiibo API](https://www.amiiboapi.org) online service.
+///
+/// This client maps any transport error or unsuccessful HTTP response to an ``AmiiboServiceError`` error, and sorts the items of the list responses in ascending order by identifier or key.
 public struct AmiiboLiveClient: Sendable {
     
     // MARK: Constants
@@ -109,7 +111,7 @@ extension AmiiboLiveClient: AmiiboClient {
     }
 
     /// Gets the date when the data was last updated.
-    /// - Returns: A last updated date.
+    /// - Returns: A last updated date, decoded as UTC.
     /// - Throws: An ``AmiiboServiceError`` error in case some issue is encountered while generating the result.
     public func getLastUpdated() async throws(AmiiboServiceError) -> Date {
         try await fetchLastUpdated()
@@ -317,7 +319,7 @@ private extension AmiiboLiveClient {
     }
     
     /// Fetches the date when the data was last updated.
-    /// - Returns: A fetched last updated date.
+    /// - Returns: A fetched last updated date, decoded as UTC.
     /// - Throws: An ``AmiiboServiceError`` error in case some issue is encountered while generating the result.
     func fetchLastUpdated() async throws(AmiiboServiceError) -> Date {
         let response = try await perform {
diff --git a/Sources/AmiiboService/Public/Models/Amiibo/Amiibo+Release.swift b/Sources/AmiiboService/Public/Models/Amiibo/Amiibo+Release.swift
index e2211c4..627e5b7 100644
--- a/Sources/AmiiboService/Public/Models/Amiibo/Amiibo+Release.swift
+++ b/Sources/AmiiboService/Public/Models/Amiibo/Amiibo+Release.swift
@@ -16,6 +16,8 @@ import Foundation
 
 extension Amiibo {
     /// A model that represents the regional release dates of an amiibo.
+    ///
+    /// The service provides these dates as date-only values, which are decoded as midnight UTC.
     public struct Release: Sendable, Hashable {
         
         // MARK: Properties
diff --git a/Sources/AmiiboService/Public/Protocols/AmiiboClient.swift b/Sources/AmiiboService/Public/Protocols/AmiiboClient.swift
index 22078e7..fc1b3a8 100644
--- a/Sources/AmiiboService/Public/Protocols/AmiiboClient.swift
+++ b/Sources/AmiiboService/Public/Protocols/AmiiboClient.swift
@@ -52,7 +52,7 @@ public protocol AmiiboClient: Sendable {
     func getGameSeries(by filter: GameSeriesFilter) async throws(AmiiboServiceError) -> [GameSeries]
     
     /// Gets the date when the data was last updated.
-    /// - Returns: A last updated date.
+    /// - Returns: A last updated date, decoded as UTC.
     /// - Throws: An ``AmiiboServiceError`` error in case some issue is encountered while generating the result.
     func getLastUpdated() async throws(AmiiboServiceError) -> Date
 
diff --git a/Sources/AmiiboService/Public/Services/AmiiboService.swift b/Sources/AmiiboService/Public/Services/AmiiboService.swift
index 1584b9c..1f95cc8 100644
--- a/Sources/AmiiboService/Public/Services/AmiiboService.swift
+++ b/Sources/AmiiboService/Public/Services/AmiiboService.swift
@@ -15,6 +15,8 @@
 import Foundation
 
 /// A type that implements the service that uses a client to make calls.
+///
+/// This service forwards every call to the ``AmiiboClient`` client injected during initialization, which defaults to an ``AmiiboLiveClient`` instance. This type is `Sendable`, so an instance can be safely shared across concurrency domains.
 public struct AmiiboService: Sendable {
     
     // MARK: Properties
@@ -83,7 +85,7 @@ public struct AmiiboService: Sendable {
     }
 
     /// Gets the date when the data was last updated.
-    /// - Returns: A last updated date.
+    /// - Returns: A last updated date, decoded as UTC.
     /// - Throws: An ``AmiiboServiceError`` error in case some issue is encountered while generating the result.
     public func getLastUpdated() async throws(AmiiboServiceError) -> Date {
         try await client.getLastUpdated()