diff --git a/src/Speckle.Sdk/Api/Exceptions.cs b/src/Speckle.Sdk/Api/Exceptions.cs
index 0608d7da..b7267df9 100644
--- a/src/Speckle.Sdk/Api/Exceptions.cs
+++ b/src/Speckle.Sdk/Api/Exceptions.cs
@@ -98,6 +98,23 @@ public sealed class SpeckleGraphQLInvalidQueryException : SpeckleGraphQLExceptio
     : base(message, innerException) { }
 }
 
+/// <summary>
+/// Represents a <c>WORKSPACES_MODULE_DISABLED_ERROR</c> GraphQL error as an exception
+/// </summary>
+/// <remarks>
+/// A GraphQL request for workspace resources was made to a server that does not have the <c>FF_WORKSPACES_MODULE_ENABLED</c> feature flag enabled
+/// </remarks>
+public sealed class SpeckleGraphQLWorkspaceNotEnabledException : SpeckleGraphQLException
+{
+  public SpeckleGraphQLWorkspaceNotEnabledException() { }
+
+  public SpeckleGraphQLWorkspaceNotEnabledException(string? message)
+    : base(message) { }
+
+  public SpeckleGraphQLWorkspaceNotEnabledException(string? message, Exception? innerException)
+    : base(message, innerException) { }
+}
+
 /// <seealso cref="PermissionCheckResult"/>
 public sealed class WorkspacePermissionException : SpeckleGraphQLException
 {
diff --git a/src/Speckle.Sdk/Api/GraphQL/Client.cs b/src/Speckle.Sdk/Api/GraphQL/Client.cs
index 9e774db0..c7969585 100644
--- a/src/Speckle.Sdk/Api/GraphQL/Client.cs
+++ b/src/Speckle.Sdk/Api/GraphQL/Client.cs
@@ -37,6 +37,7 @@ public sealed class Client : ISpeckleGraphQLClient, IClient
   public CommentResource Comment { get; }
   public SubscriptionResource Subscription { get; }
   public WorkspaceResource Workspace { get; }
+  public ServerResource Server { get; }
 
   public Uri ServerUrl => new(Account.serverInfo.url);
 
@@ -71,6 +72,7 @@ public sealed class Client : ISpeckleGraphQLClient, IClient
     Comment = new(this);
     Subscription = new(this);
     Workspace = new(this);
+    Server = new(this);
 
     HttpClient = CreateHttpClient(application, speckleHttp, account);
 
@@ -209,11 +211,8 @@ public sealed class Client : ISpeckleGraphQLClient, IClient
         {
           ContractResolver = new CamelCasePropertyNamesContractResolver { IgnoreIsSpecifiedMembers = true }, //(Default)
           MissingMemberHandling = MissingMemberHandling.Error, //(not default) If you query for a member that doesn't exist, this will throw (except websocket responses see https://github.com/graphql-dotnet/graphql-client/issues/660)
-          Converters =
-          {
-            new ConstantCaseEnumConverter(),
-          } //(Default) enums will be serialized using the GraphQL const case standard
-          ,
+          NullValueHandling = NullValueHandling.Ignore, //(not default) We won't serialize nulls, as can open more opportunity for conflicting with servers that are old and don't have the latest schema
+          Converters = { new ConstantCaseEnumConverter() }, //(Default) enums will be serialized using the GraphQL const case standard
         }
       ),
       httpClient
diff --git a/src/Speckle.Sdk/Api/GraphQL/GraphQLErrorHandler.cs b/src/Speckle.Sdk/Api/GraphQL/GraphQLErrorHandler.cs
index 5fff1eea..4fa7d9f5 100644
--- a/src/Speckle.Sdk/Api/GraphQL/GraphQLErrorHandler.cs
+++ b/src/Speckle.Sdk/Api/GraphQL/GraphQLErrorHandler.cs
@@ -32,6 +32,7 @@ internal static class GraphQLErrorHandler
         "STREAM_NOT_FOUND" => new SpeckleGraphQLStreamNotFoundException(message),
         "BAD_USER_INPUT" => new SpeckleGraphQLBadInputException(message),
         "INTERNAL_SERVER_ERROR" => new SpeckleGraphQLInternalErrorException(message),
+        "WORKSPACES_MODULE_DISABLED_ERROR" => new SpeckleGraphQLWorkspaceNotEnabledException(message),
         _ => new SpeckleGraphQLException(message),
       };
       exceptions.Add(ex);
diff --git a/src/Speckle.Sdk/Api/GraphQL/Inputs/CommentInputs.cs b/src/Speckle.Sdk/Api/GraphQL/Inputs/CommentInputs.cs
index 057f3058..4204cb0e 100644
--- a/src/Speckle.Sdk/Api/GraphQL/Inputs/CommentInputs.cs
+++ b/src/Speckle.Sdk/Api/GraphQL/Inputs/CommentInputs.cs
@@ -1,8 +1,8 @@
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-internal sealed record CommentContentInput(IReadOnlyCollection<string>? blobIds, object? doc);
+internal record CommentContentInput(IReadOnlyCollection<string>? blobIds, object? doc);
 
-internal sealed record CreateCommentInput(
+internal record CreateCommentInput(
   CommentContentInput content,
   string projectId,
   string resourceIdString,
@@ -10,10 +10,10 @@ internal sealed record CreateCommentInput(
   object? viewerState
 );
 
-internal sealed record EditCommentInput(CommentContentInput content, string commentId, string projectId);
+internal record EditCommentInput(CommentContentInput content, string commentId, string projectId);
 
-internal sealed record CreateCommentReplyInput(CommentContentInput content, string threadId, string projectId);
+internal record CreateCommentReplyInput(CommentContentInput content, string threadId, string projectId);
 
-public sealed record MarkCommentViewedInput(string commentId, string projectId);
+public record MarkCommentViewedInput(string commentId, string projectId);
 
-public sealed record ArchiveCommentInput(string commentId, string projectId, bool archived = true);
+public record ArchiveCommentInput(string commentId, string projectId, bool archived = true);
diff --git a/src/Speckle.Sdk/Api/GraphQL/Inputs/ModelInputs.cs b/src/Speckle.Sdk/Api/GraphQL/Inputs/ModelInputs.cs
index 134300e3..eb5a8b93 100644
--- a/src/Speckle.Sdk/Api/GraphQL/Inputs/ModelInputs.cs
+++ b/src/Speckle.Sdk/Api/GraphQL/Inputs/ModelInputs.cs
@@ -1,9 +1,9 @@
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-public sealed record CreateModelInput(string name, string? description, string projectId);
+public record CreateModelInput(string name, string? description, string projectId);
 
-public sealed record DeleteModelInput(string id, string projectId);
+public record DeleteModelInput(string id, string projectId);
 
-public sealed record UpdateModelInput(string id, string? name, string? description, string projectId);
+public record UpdateModelInput(string id, string? name, string? description, string projectId);
 
-public sealed record ModelVersionsFilter(IReadOnlyList<string> priorityIds, bool? priorityIdsOnly);
+public record ModelVersionsFilter(IReadOnlyList<string> priorityIds, bool? priorityIdsOnly);
diff --git a/src/Speckle.Sdk/Api/GraphQL/Inputs/ProjectInputs.cs b/src/Speckle.Sdk/Api/GraphQL/Inputs/ProjectInputs.cs
index a4ac847a..ff968c3e 100644
--- a/src/Speckle.Sdk/Api/GraphQL/Inputs/ProjectInputs.cs
+++ b/src/Speckle.Sdk/Api/GraphQL/Inputs/ProjectInputs.cs
@@ -2,22 +2,22 @@
 
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-public sealed record ProjectCommentsFilter(bool? includeArchived, bool? loadedVersionsOnly, string? resourceIdString);
+public record ProjectCommentsFilter(bool? includeArchived, bool? loadedVersionsOnly, string? resourceIdString);
 
-public sealed record ProjectCreateInput(string? name, string? description, ProjectVisibility? visibility);
+public record ProjectCreateInput(string? name, string? description, ProjectVisibility? visibility);
 
-public sealed record WorkspaceProjectCreateInput(
+public record WorkspaceProjectCreateInput(
   string? name,
   string? description,
   ProjectVisibility? visibility,
   string workspaceId
 );
 
-public sealed record ProjectInviteCreateInput(string? email, string? role, string? serverRole, string? userId);
+public record ProjectInviteCreateInput(string? email, string? role, string? serverRole, string? userId);
 
-public sealed record ProjectInviteUseInput(bool accept, string projectId, string token);
+public record ProjectInviteUseInput(bool accept, string projectId, string token);
 
-public sealed record ProjectModelsFilter(
+public record ProjectModelsFilter(
   IReadOnlyList<string>? contributors = null,
   IReadOnlyList<string>? excludeIds = null,
   IReadOnlyList<string>? ids = null,
@@ -26,7 +26,7 @@ public sealed record ProjectModelsFilter(
   IReadOnlyList<string>? sourceApps = null
 );
 
-public sealed record ProjectUpdateInput(
+public record ProjectUpdateInput(
   string id,
   string? name = null,
   string? description = null,
@@ -34,6 +34,6 @@ public sealed record ProjectUpdateInput(
   ProjectVisibility? visibility = null
 );
 
-public sealed record ProjectUpdateRoleInput(string userId, string projectId, string? role);
+public record ProjectUpdateRoleInput(string userId, string projectId, string? role);
 
-public sealed record WorkspaceProjectsFilter(string? search, bool? withProjectRoleOnly);
+public record WorkspaceProjectsFilter(string? search, bool? withProjectRoleOnly);
diff --git a/src/Speckle.Sdk/Api/GraphQL/Inputs/SubscriptionInputs.cs b/src/Speckle.Sdk/Api/GraphQL/Inputs/SubscriptionInputs.cs
index 4736a640..32fcd8be 100644
--- a/src/Speckle.Sdk/Api/GraphQL/Inputs/SubscriptionInputs.cs
+++ b/src/Speckle.Sdk/Api/GraphQL/Inputs/SubscriptionInputs.cs
@@ -1,7 +1,3 @@
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-public sealed record ViewerUpdateTrackingTarget(
-  string projectId,
-  string resourceIdString,
-  bool? loadedVersionsOnly = null
-);
+public record ViewerUpdateTrackingTarget(string projectId, string resourceIdString, bool? loadedVersionsOnly = null);
diff --git a/src/Speckle.Sdk/Api/GraphQL/Inputs/UserInputs.cs b/src/Speckle.Sdk/Api/GraphQL/Inputs/UserInputs.cs
index 2584c772..1a66e07d 100644
--- a/src/Speckle.Sdk/Api/GraphQL/Inputs/UserInputs.cs
+++ b/src/Speckle.Sdk/Api/GraphQL/Inputs/UserInputs.cs
@@ -1,13 +1,8 @@
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-public sealed record UserUpdateInput(
-  string? avatar = null,
-  string? bio = null,
-  string? company = null,
-  string? name = null
-);
+public record UserUpdateInput(string? avatar = null, string? bio = null, string? company = null, string? name = null);
 
-public sealed record UserProjectsFilter(
+public record UserProjectsFilter(
   string? search = null,
   IReadOnlyList<string>? onlyWithRoles = null,
   string? workspaceId = null,
@@ -15,4 +10,4 @@ public sealed record UserProjectsFilter(
   bool? includeImplicitAccess = null
 );
 
-public sealed record UserWorkspacesFilter(string? search);
+public record UserWorkspacesFilter(string? search);
diff --git a/src/Speckle.Sdk/Api/GraphQL/Inputs/VersionInputs.cs b/src/Speckle.Sdk/Api/GraphQL/Inputs/VersionInputs.cs
index af694dac..54cd8a4b 100644
--- a/src/Speckle.Sdk/Api/GraphQL/Inputs/VersionInputs.cs
+++ b/src/Speckle.Sdk/Api/GraphQL/Inputs/VersionInputs.cs
@@ -1,12 +1,12 @@
 namespace Speckle.Sdk.Api.GraphQL.Inputs;
 
-public sealed record UpdateVersionInput(string versionId, string projectId, string? message);
+public record UpdateVersionInput(string versionId, string projectId, string? message);
 
-public sealed record MoveVersionsInput(string projectId, string targetModelName, IReadOnlyList<string> versionIds);
+public record MoveVersionsInput(string projectId, string targetModelName, IReadOnlyList<string> versionIds);
 
-public sealed record DeleteVersionsInput(IReadOnlyList<string> versionIds, string projectId);
+public record DeleteVersionsInput(IReadOnlyList<string> versionIds, string projectId);
 
-public sealed record CreateVersionInput(
+public record CreateVersionInput(
   string objectId,
   string modelId,
   string projectId,
@@ -16,7 +16,7 @@ public sealed record CreateVersionInput(
   IReadOnlyList<string>? parents = null
 );
 
-public sealed record MarkReceivedVersionInput(
+public record MarkReceivedVersionInput(
   string versionId,
   string projectId,
   string sourceApplication,
diff --git a/src/Speckle.Sdk/Api/GraphQL/Resources/ServerResource.cs b/src/Speckle.Sdk/Api/GraphQL/Resources/ServerResource.cs
new file mode 100644
index 00000000..f14ed714
--- /dev/null
+++ b/src/Speckle.Sdk/Api/GraphQL/Resources/ServerResource.cs
@@ -0,0 +1,39 @@
+using GraphQL;
+using Speckle.Sdk.Api.GraphQL.Models.Responses;
+
+namespace Speckle.Sdk.Api.GraphQL.Resources;
+
+public sealed class ServerResource
+{
+  private readonly ISpeckleGraphQLClient _client;
+
+  internal ServerResource(ISpeckleGraphQLClient client)
+  {
+    _client = client;
+  }
+
+  /// <param name="cancellationToken"></param>
+  /// <returns><see langword="null"/> if server is workspaces enabled</returns>
+  /// <returns>the requested user, or null if <see cref="Client"/> was initialised with an unauthenticated account</returns>
+  /// <inheritdoc cref="ISpeckleGraphQLClient.ExecuteGraphQLRequest{T}"/>
+  public async Task<bool> IsWorkspaceEnabled(CancellationToken cancellationToken = default)
+  {
+    //language=graphql
+    const string QUERY = """
+       query {
+        data:serverInfo {
+          data:workspaces {
+            data:workspacesEnabled      
+          }
+        }
+      }
+      """;
+    var request = new GraphQLRequest { Query = QUERY };
+
+    var response = await _client
+      .ExecuteGraphQLRequest<RequiredResponse<RequiredResponse<RequiredResponse<bool>>>>(request, cancellationToken)
+      .ConfigureAwait(false);
+
+    return response.data.data.data;
+  }
+}
diff --git a/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ActiveUserResourceTests.ActiveUserGetWorkspaces.verified.json b/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ActiveUserResourceTests.ActiveUserGetWorkspaces.verified.json
index bed49301..a684ea66 100644
--- a/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ActiveUserResourceTests.ActiveUserGetWorkspaces.verified.json
+++ b/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ActiveUserResourceTests.ActiveUserGetWorkspaces.verified.json
@@ -3,6 +3,6 @@
   "InnerException": {
     "Data": {},
     "Message": "WORKSPACES_MODULE_DISABLED_ERROR: Workspaces are not enabled on this server",
-    "Type": "SpeckleGraphQLException"
+    "Type": "SpeckleGraphQLWorkspaceNotEnabledException"
   }
 }
diff --git a/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ActiveUserResourceTests.cs b/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ActiveUserResourceTests.cs
index bfa9093a..34f6e1dc 100644
--- a/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ActiveUserResourceTests.cs
+++ b/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ActiveUserResourceTests.cs
@@ -2,6 +2,7 @@
 using Speckle.Sdk.Api;
 using Speckle.Sdk.Api.GraphQL.Inputs;
 using Speckle.Sdk.Api.GraphQL.Resources;
+using Speckle.Sdk.Api.GraphQL.Serializer;
 
 namespace Speckle.Sdk.Tests.Integration.API.GraphQL.Resources;
 
@@ -137,4 +138,32 @@ public class ActiveUserResourceTests : IAsyncLifetime
       .Should()
       .ThrowAsync<SpeckleException>();
   }
+
+  /// <summary>
+  /// Frequently, When the server makes a change in the graphql schema to add a new property to an input
+  /// object like <see cref="UserProjectsFilter"/>, we would like to implement that change in the SDK
+  /// in a way that is non-breaking with older servers... Apollo will respond with a BAD_USER_INPUT otherwise
+  ///
+  /// To do that, the <see cref="Client"/> overrides the <see cref="NewtonsoftJsonSerializer"/>
+  /// to ensure that `null` values are not serialized
+  /// Since Apollo also treats a <c>null</c> value the same as no value at all, the server does not complain.
+  ///
+  /// This test emulates there being a property on an input that the server doesn't understand.
+  /// And we expect it to not complain when the value is <see langword="null"/>
+  /// </summary>
+  [Fact]
+  public async Task RequestWithNewerInput()
+  {
+    var filterNull = new FakeProjectInput(null);
+    _ = await Sut.GetProjects(filter: filterNull);
+
+    var filterNotNull = new FakeProjectInput("fake value");
+    var ex = await Assert.ThrowsAsync<AggregateException>(async () =>
+    {
+      _ = await Sut.GetProjects(filter: filterNotNull);
+    });
+    ex.InnerExceptions.Single().Should().BeOfType<SpeckleGraphQLBadInputException>();
+  }
+
+  public record FakeProjectInput(string? fakeProperty) : UserProjectsFilter { }
 }
diff --git a/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ServerResourceTests.cs b/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ServerResourceTests.cs
new file mode 100644
index 00000000..da102547
--- /dev/null
+++ b/tests/Speckle.Sdk.Tests.Integration/Api/GraphQL/Resources/ServerResourceTests.cs
@@ -0,0 +1,30 @@
+using FluentAssertions;
+using Speckle.Sdk.Api;
+using Speckle.Sdk.Api.GraphQL.Resources;
+
+namespace Speckle.Sdk.Tests.Integration.API.GraphQL.Resources;
+
+public class ServerResourceTests : IAsyncLifetime
+{
+  private IClient _testUser;
+  private ServerResource Sut => _testUser.Server;
+
+  public async Task InitializeAsync()
+  {
+    // Runs instead of [SetUp] in NUnit
+    _testUser = await Fixtures.SeedUserWithClient();
+  }
+
+  public Task DisposeAsync()
+  {
+    // Perform any cleanup, if needed
+    return Task.CompletedTask;
+  }
+
+  [Fact]
+  public async Task ExpectWorkspaceNotEnabled()
+  {
+    bool result = await Sut.IsWorkspaceEnabled();
+    result.Should().Be(false);
+  }
+}
diff --git a/tests/Speckle.Sdk.Tests.Unit/Api/GraphQLErrorHandler.cs b/tests/Speckle.Sdk.Tests.Unit/Api/GraphQLErrorHandler.cs
index b379f8eb..f3adbcb8 100644
--- a/tests/Speckle.Sdk.Tests.Unit/Api/GraphQLErrorHandler.cs
+++ b/tests/Speckle.Sdk.Tests.Unit/Api/GraphQLErrorHandler.cs
@@ -16,6 +16,11 @@ public class GraphQLErrorHandlerTests
     yield return [typeof(SpeckleGraphQLBadInputException), new Map { { "code", "BAD_USER_INPUT" } }];
     yield return [typeof(SpeckleGraphQLInvalidQueryException), new Map { { "code", "GRAPHQL_PARSE_FAILED" } }];
     yield return [typeof(SpeckleGraphQLInvalidQueryException), new Map { { "code", "GRAPHQL_VALIDATION_FAILED" } }];
+    yield return
+    [
+      typeof(SpeckleGraphQLWorkspaceNotEnabledException),
+      new Map { { "code", "WORKSPACES_MODULE_DISABLED_ERROR" } },
+    ];
     yield return [typeof(SpeckleGraphQLException), new Map { { "foo", "bar" } }];
     yield return [typeof(SpeckleGraphQLException), new Map { { "code", "CUSTOM_THING" } }];
   }