diff --git a/sandbox/OpenIddict.Sandbox.Console.Client/InteractiveService.cs b/sandbox/OpenIddict.Sandbox.Console.Client/InteractiveService.cs
index a2aa6ac4..fb026f42 100644
--- a/sandbox/OpenIddict.Sandbox.Console.Client/InteractiveService.cs
+++ b/sandbox/OpenIddict.Sandbox.Console.Client/InteractiveService.cs
@@ -383,6 +383,11 @@ public class InteractiveService : BackgroundService
                     choices.Add((GrantTypes.ClientCredentials, "Client credentials grant (application authentication only)"));
                 }
 
+                if (choices.Count is 0)
+                {
+                    choices.Add((GrantTypes.AuthorizationCode, "Authorization code grant"));
+                }
+
                 if (choices.Count is 1)
                 {
                     return choices[0].GrantType;
diff --git a/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xml b/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xml
index 23fd7dcb..eada1419 100644
--- a/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xml
+++ b/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xml
@@ -310,14 +310,27 @@
   </Provider>
 
   <!--
-                                          ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
-                                          ██ ▄▄▀██ █████ ▄▄▄██ ███ █ ▄▄▄██ ▄▄▀██
-                                          ██ █████ █████ ▄▄▄███ █ ██ ▄▄▄██ ▀▀▄██
-                                          ██ ▀▀▄██ ▀▀ ██ ▀▀▀███▄▀▄██ ▀▀▀██ ██ ██
-                                          ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
+                                      ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
+                                      ██ ▄▄▀██ █████ ▄▄▀██ ▄▄▄ ██ ▄▄▄ ██ ████▄ ▄█ ▀██ ██ █▀▄██
+                                      ██ █████ █████ ▀▀ ██▄▄▄▀▀██▄▄▄▀▀██ █████ ██ █ █ ██ ▄▀███
+                                      ██ ▀▀▄██ ▀▀ ██ ██ ██ ▀▀▀ ██ ▀▀▀ ██ ▀▀ █▀ ▀█ ██▄ ██ ██ ██
+                                      ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
+  -->
+	
+  <Provider Name="ClassLink" Id="4bdb0adc-5609-4750-8098-cf3ff5d782df"
+            Documentation="https://help.classlink.com/s/topic/0TO1E0000009PVYWA2/api">
+    <Environment Issuer="https://launchpad.classlink.com/" />
+  </Provider>
+
+  <!--
+                                              ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
+                                              ██ ▄▄▀██ █████ ▄▄▄██ ███ █ ▄▄▄██ ▄▄▀██
+                                              ██ █████ █████ ▄▄▄███ █ ██ ▄▄▄██ ▀▀▄██
+                                              ██ ▀▀▄██ ▀▀ ██ ▀▀▀███▄▀▄██ ▀▀▀██ ██ ██
+                                              ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
   -->
 
-  <Provider Name="Clever" Id="8DF11BBC-B8A8-4A8D-8C5F-AD86D9539BBA"
+  <Provider Name="Clever" Id="8df11bbc-b8a8-4a8d-8c5f-ad86d9539bba"
             Documentation="https://dev.clever.com/docs/oauth-oidc-overview">
     <Environment Issuer="https://clever.com/" />
   </Provider>
diff --git a/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xsd b/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xsd
index d4d4f14b..ba1e37bc 100644
--- a/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xsd
+++ b/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xsd
@@ -562,12 +562,12 @@
 
             <xs:attribute name="Id" use="required">
               <xs:annotation>
-                <xs:documentation>The provider identifier, represented as a GUID.</xs:documentation>
+                <xs:documentation>The provider identifier, represented as a lowercase GUID.</xs:documentation>
               </xs:annotation>
 
               <xs:simpleType>
                 <xs:restriction base="xs:string">
-                  <xs:pattern value="([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})|(\{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}\})" />
+                  <xs:pattern value="([0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12})|(\{[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}\})" />
                 </xs:restriction>
               </xs:simpleType>
             </xs:attribute>