diff --git a/sandbox/OpenIddict.Sandbox.AspNet.Client/Startup.cs b/sandbox/OpenIddict.Sandbox.AspNet.Client/Startup.cs
index 8cd8315c9..7e7932e09 100644
--- a/sandbox/OpenIddict.Sandbox.AspNet.Client/Startup.cs
+++ b/sandbox/OpenIddict.Sandbox.AspNet.Client/Startup.cs
@@ -9,6 +9,7 @@
 using Microsoft.Owin.Security.Cookies;
 using OpenIddict.Client;
 using OpenIddict.Client.Owin;
+using OpenIddict.Client.WebIntegration;
 using OpenIddict.Sandbox.AspNetCore.Server.Models;
 using Owin;
 using static OpenIddict.Abstractions.OpenIddictConstants;
@@ -95,7 +96,7 @@ public void Configuration(IAppBuilder app)
                            options.SetClientId("1016114395689-kgtgq2p6dj27d7v6e2kjkoj54dgrrckh.apps.googleusercontent.com")
                                   .SetClientSecret("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")
                                   .SetRedirectUri("callback/login/google")
-                                  .SetAccessType("offline")
+                                  .SetAccessType(OpenIddictClientWebIntegrationConstants.Google.AccessTypes.Offline)
                                   .AddScopes(Scopes.Profile);
                        });
             });
diff --git a/sandbox/OpenIddict.Sandbox.AspNetCore.Client/Startup.cs b/sandbox/OpenIddict.Sandbox.AspNetCore.Client/Startup.cs
index 983185b17..531151268 100644
--- a/sandbox/OpenIddict.Sandbox.AspNetCore.Client/Startup.cs
+++ b/sandbox/OpenIddict.Sandbox.AspNetCore.Client/Startup.cs
@@ -3,6 +3,7 @@
 using Microsoft.EntityFrameworkCore;
 using Microsoft.IdentityModel.Tokens;
 using OpenIddict.Client;
+using OpenIddict.Client.WebIntegration;
 using OpenIddict.Sandbox.AspNetCore.Client.Models;
 using Quartz;
 using static OpenIddict.Abstractions.OpenIddictConstants;
@@ -152,7 +153,7 @@ public void ConfigureServices(IServiceCollection services)
                            options.SetClientId("1016114395689-kgtgq2p6dj27d7v6e2kjkoj54dgrrckh.apps.googleusercontent.com")
                                   .SetClientSecret("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")
                                   .SetRedirectUri("callback/login/google")
-                                  .SetAccessType("offline")
+                                  .SetAccessType(OpenIddictClientWebIntegrationConstants.Google.AccessTypes.Offline)
                                   .AddScopes(Scopes.Profile);
                        })
                        .AddReddit(options =>
@@ -160,7 +161,7 @@ public void ConfigureServices(IServiceCollection services)
                            options.SetClientId("vDLNqhrkwrvqHgnoBWF3og")
                                   .SetClientSecret("Tpab28Dz0upyZLqn7AN3GFD1O-zaAw")
                                   .SetRedirectUri("callback/login/reddit")
-                                  .SetDuration("permanent");
+                                  .SetDuration(OpenIddictClientWebIntegrationConstants.Reddit.Durations.Permanent);
                        });
 
 #if SUPPORTS_PEM_ENCODED_KEY_IMPORT
diff --git a/sandbox/OpenIddict.Sandbox.Console.Client/Program.cs b/sandbox/OpenIddict.Sandbox.Console.Client/Program.cs
index e42f6c6b3..56b0a82c1 100644
--- a/sandbox/OpenIddict.Sandbox.Console.Client/Program.cs
+++ b/sandbox/OpenIddict.Sandbox.Console.Client/Program.cs
@@ -3,6 +3,7 @@
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using OpenIddict.Client;
+using OpenIddict.Client.WebIntegration;
 using OpenIddict.Sandbox.Console.Client;
 using static OpenIddict.Abstractions.OpenIddictConstants;
 
@@ -104,7 +105,7 @@
                           // is discouraged practice, it is the only option to use this provider in a desktop client.
                           .SetClientSecret("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")
                           .SetRedirectUri("callback/login/google")
-                          .SetAccessType("offline")
+                          .SetAccessType(OpenIddictClientWebIntegrationConstants.Google.AccessTypes.Offline)
                           .AddScopes(Scopes.Profile)
                           .AddGrantTypes(GrantTypes.AuthorizationCode)
                           .SetProviderName("Google [code flow]")
@@ -115,7 +116,7 @@
                    options.SetClientId("1016114395689-le5kvnikv5hhg3otvn1tgs2aogpkpvff.apps.googleusercontent.com")
                           .SetClientSecret("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")
                           .SetRedirectUri("callback/login/google")
-                          .SetAccessType("offline")
+                          .SetAccessType(OpenIddictClientWebIntegrationConstants.Google.AccessTypes.Offline)
                           .AddScopes(Scopes.Profile)
                           .AddGrantTypes(GrantTypes.DeviceCode)
                           .SetProviderName("Google [device flow]")
diff --git a/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xml b/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xml
index 0ad5422d3..0e6510f3c 100644
--- a/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xml
+++ b/src/OpenIddict.Client.WebIntegration/OpenIddictClientWebIntegrationProviders.xml
@@ -99,6 +99,9 @@
 
       _ => throw new InvalidOperationException(SR.GetResourceString(SR.ID0473)) }}" />
 
+    <Constant Class="AccessTypes" Value="offline" Name="Offline" />
+    <Constant Class="AccessTypes" Value="online"  Name="Online"  />
+
     <Constant Class="Regions" Value="China"  Name="China"  />
     <Constant Class="Regions" Value="Global" Name="Global" />
 
@@ -1089,6 +1092,9 @@
             Documentation="https://developers.google.com/identity/protocols/oauth2/openid-connect">
     <Environment Issuer="https://accounts.google.com/" />
 
+    <Constant Class="AccessTypes" Value="offline" Name="Offline" />
+    <Constant Class="AccessTypes" Value="online"  Name="Online"  />
+
     <Setting PropertyName="AccessType" ParameterName="type" Type="String" Required="false"
              Description="The value used as the 'access_type' parameter (can be set to 'offline' to retrieve a refresh token)" />
   </Provider>
@@ -1126,6 +1132,9 @@
     <Environment Issuer="https://accounts.huawei.com/"
                  ConfigurationEndpoint="https://oauth-login.cloud.huawei.com/.well-known/openid-configuration" />
 
+    <Constant Class="AccessTypes" Value="offline" Name="Offline" />
+    <Constant Class="AccessTypes" Value="online"  Name="Online"  />
+
     <Setting PropertyName="AccessType" ParameterName="type" Type="String" Required="false"
              Description="The value used as the 'access_type' parameter (can be set to 'offline' to retrieve a refresh token)" />
 
@@ -1566,6 +1575,9 @@
       <Scope Name="profile" Default="true" Required="true" />
     </Environment>
 
+    <Constant Class="AccessTypes" Value="offline" Name="Offline" />
+    <Constant Class="AccessTypes" Value="online"  Name="Online"  />
+
     <Setting PropertyName="AccessType" ParameterName="type" Type="String" Required="false"
              Description="The value used as the 'access_type' parameter (can be set to 'offline' to retrieve a refresh token)" />
 
@@ -1844,6 +1856,9 @@
       <Scope Name="identity" Default="true" Required="true" />
     </Environment>
 
+    <Constant Class="Durations" Value="permanent" Name="Permanent" />
+    <Constant Class="Durations" Value="temporary" Name="Temporary" />
+
     <Setting PropertyName="Duration" ParameterName="duration" Type="String" Required="false"
              Description="The value used as the 'duration' parameter (can be set to 'permanent' to retrieve a refresh token)" />
   </Provider>
@@ -2707,6 +2722,9 @@
       <Scope Name="AaaServer.profile.READ" Default="true" Required="true" />
     </Environment>
 
+    <Constant Class="AccessTypes" Value="offline" Name="Offline" />
+    <Constant Class="AccessTypes" Value="online"  Name="Online"  />
+
     <Constant Class="Regions" Value="Australia"      Name="Australia"     />
     <Constant Class="Regions" Value="Canada"         Name="Canada"        />
     <Constant Class="Regions" Value="European Union" Name="EuropeanUnion" />