diff --git a/src/LanguageServer/Protocol/Extensions/ProtocolConversions.cs b/src/LanguageServer/Protocol/Extensions/ProtocolConversions.cs
index 13a3bffdbdaaf..79b5ab45911ba 100644
--- a/src/LanguageServer/Protocol/Extensions/ProtocolConversions.cs
+++ b/src/LanguageServer/Protocol/Extensions/ProtocolConversions.cs
@@ -21,6 +21,7 @@
 using Microsoft.CodeAnalysis.NavigateTo;
 using Microsoft.CodeAnalysis.Options;
 using Microsoft.CodeAnalysis.PooledObjects;
+using Microsoft.CodeAnalysis.SpellCheck;
 using Microsoft.CodeAnalysis.Tags;
 using Microsoft.CodeAnalysis.Text;
 using Roslyn.Text.Adornments;
@@ -583,6 +584,15 @@ public static LSP.DocumentHighlightKind HighlightSpanKindToDocumentHighlightKind
             }
         }
 
+        public static LSP.VSInternalSpellCheckableRangeKind SpellCheckSpanKindToSpellCheckableRangeKind(SpellCheckKind kind)
+            => kind switch
+            {
+                SpellCheckKind.Identifier => LSP.VSInternalSpellCheckableRangeKind.Identifier,
+                SpellCheckKind.Comment => LSP.VSInternalSpellCheckableRangeKind.Comment,
+                SpellCheckKind.String => LSP.VSInternalSpellCheckableRangeKind.String,
+                _ => throw ExceptionUtilities.UnexpectedValue(kind),
+            };
+
         public static Glyph SymbolKindToGlyph(LSP.SymbolKind kind)
         {
             switch (kind)
diff --git a/src/LanguageServer/Protocol/Handler/References/FindImplementationsHandler.cs b/src/LanguageServer/Protocol/Handler/References/FindImplementationsHandler.cs
index 343299bec39e4..edc18420b5433 100644
--- a/src/LanguageServer/Protocol/Handler/References/FindImplementationsHandler.cs
+++ b/src/LanguageServer/Protocol/Handler/References/FindImplementationsHandler.cs
@@ -11,6 +11,7 @@
 using Microsoft.CodeAnalysis.Options;
 using Microsoft.CodeAnalysis.PooledObjects;
 using Microsoft.CodeAnalysis.Shared.Extensions;
+using Microsoft.CodeAnalysis.Text;
 using LSP = Roslyn.LanguageServer.Protocol;
 
 namespace Microsoft.CodeAnalysis.LanguageServer.Handler
@@ -33,18 +34,24 @@ public FindImplementationsHandler(IGlobalOptionService globalOptions)
 
         public LSP.TextDocumentIdentifier GetTextDocumentIdentifier(LSP.TextDocumentPositionParams request) => request.TextDocument;
 
-        public async Task<LSP.Location[]> HandleRequestAsync(LSP.TextDocumentPositionParams request, RequestContext context, CancellationToken cancellationToken)
+        public Task<LSP.Location[]> HandleRequestAsync(LSP.TextDocumentPositionParams request, RequestContext context, CancellationToken cancellationToken)
         {
             var document = context.GetRequiredDocument();
-            var clientCapabilities = context.GetRequiredClientCapabilities();
+            var supportsVisualStudioExtensions = context.GetRequiredClientCapabilities().HasVisualStudioLspCapability();
+            var linePosition = ProtocolConversions.PositionToLinePosition(request.Position);
+            var classificationOptions = _globalOptions.GetClassificationOptionsProvider();
+
+            return FindImplementationsAsync(document, linePosition, classificationOptions, supportsVisualStudioExtensions, cancellationToken);
+        }
 
+        internal static async Task<LSP.Location[]> FindImplementationsAsync(Document document, LinePosition linePosition, OptionsProvider<ClassificationOptions> classificationOptions, bool supportsVisualStudioExtensions, CancellationToken cancellationToken)
+        {
             var locations = ArrayBuilder<LSP.Location>.GetInstance();
 
             var findUsagesService = document.GetRequiredLanguageService<IFindUsagesLSPService>();
-            var position = await document.GetPositionFromLinePositionAsync(ProtocolConversions.PositionToLinePosition(request.Position), cancellationToken).ConfigureAwait(false);
+            var position = await document.GetPositionFromLinePositionAsync(linePosition, cancellationToken).ConfigureAwait(false);
 
             var findUsagesContext = new SimpleFindUsagesContext();
-            var classificationOptions = _globalOptions.GetClassificationOptionsProvider();
             await findUsagesService.FindImplementationsAsync(findUsagesContext, document, position, classificationOptions, cancellationToken).ConfigureAwait(false);
 
             foreach (var definition in findUsagesContext.GetDefinitions())
@@ -52,7 +59,7 @@ public FindImplementationsHandler(IGlobalOptionService globalOptions)
                 var text = definition.GetClassifiedText();
                 foreach (var sourceSpan in definition.SourceSpans)
                 {
-                    if (clientCapabilities.HasVisualStudioLspCapability() == true)
+                    if (supportsVisualStudioExtensions)
                     {
                         locations.AddIfNotNull(await ProtocolConversions.DocumentSpanToLocationWithTextAsync(sourceSpan, text, cancellationToken).ConfigureAwait(false));
                     }
diff --git a/src/LanguageServer/Protocol/Handler/SpellCheck/AbstractSpellCheckingHandler.cs b/src/LanguageServer/Protocol/Handler/SpellCheck/AbstractSpellCheckingHandler.cs
index f63aed313296e..d7fe19248adff 100644
--- a/src/LanguageServer/Protocol/Handler/SpellCheck/AbstractSpellCheckingHandler.cs
+++ b/src/LanguageServer/Protocol/Handler/SpellCheck/AbstractSpellCheckingHandler.cs
@@ -156,7 +156,6 @@ private async IAsyncEnumerable<TReport> ComputeAndReportCurrentSpansAsync(
         {
             var textDocumentIdentifier = ProtocolConversions.DocumentToTextDocumentIdentifier(document);
 
-            var text = await document.GetValueTextAsync(cancellationToken).ConfigureAwait(false);
             var spans = await service.GetSpansAsync(document, cancellationToken).ConfigureAwait(false);
 
             // protocol requires the results be in sorted order
@@ -186,13 +185,7 @@ private async IAsyncEnumerable<TReport> ComputeAndReportCurrentSpansAsync(
                 {
                     var span = spans[i];
 
-                    var kind = span.Kind switch
-                    {
-                        SpellCheckKind.Identifier => VSInternalSpellCheckableRangeKind.Identifier,
-                        SpellCheckKind.Comment => VSInternalSpellCheckableRangeKind.Comment,
-                        SpellCheckKind.String => VSInternalSpellCheckableRangeKind.String,
-                        _ => throw ExceptionUtilities.UnexpectedValue(span.Kind),
-                    };
+                    var kind = ProtocolConversions.SpellCheckSpanKindToSpellCheckableRangeKind(span.Kind);
 
                     triples[triplesIndex++] = (int)kind;
                     triples[triplesIndex++] = span.TextSpan.Start - lastSpanEnd;
diff --git a/src/Tools/ExternalAccess/Razor/Cohost/Handlers/DocumentSpellCheck.cs b/src/Tools/ExternalAccess/Razor/Cohost/Handlers/DocumentSpellCheck.cs
new file mode 100644
index 0000000000000..c1d9310d3cd6a
--- /dev/null
+++ b/src/Tools/ExternalAccess/Razor/Cohost/Handlers/DocumentSpellCheck.cs
@@ -0,0 +1,39 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.Immutable;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis.LanguageServer;
+using Microsoft.CodeAnalysis.PooledObjects;
+using Microsoft.CodeAnalysis.Shared.Extensions;
+using Microsoft.CodeAnalysis.SpellCheck;
+using Roslyn.LanguageServer.Protocol;
+
+namespace Microsoft.CodeAnalysis.ExternalAccess.Razor.Cohost.Handlers;
+
+internal static class SpellCheck
+{
+    public readonly record struct SpellCheckSpan(int StartIndex, int Length, VSInternalSpellCheckableRangeKind Kind);
+
+    public static async Task<ImmutableArray<SpellCheckSpan>> GetSpellCheckSpansAsync(Document document, CancellationToken cancellationToken)
+    {
+        var service = document.GetLanguageService<ISpellCheckSpanService>();
+        if (service is null)
+        {
+            return [];
+        }
+
+        var spans = await service.GetSpansAsync(document, cancellationToken).ConfigureAwait(false);
+
+        using var _ = ArrayBuilder<SpellCheckSpan>.GetInstance(spans.Length, out var razorSpans);
+        foreach (var span in spans)
+        {
+            var kind = ProtocolConversions.SpellCheckSpanKindToSpellCheckableRangeKind(span.Kind);
+            razorSpans.Add(new SpellCheckSpan(span.TextSpan.Start, span.TextSpan.Length, kind));
+        }
+
+        return razorSpans.ToImmutable();
+    }
+}
diff --git a/src/Tools/ExternalAccess/Razor/Cohost/Handlers/GoToImplementation.cs b/src/Tools/ExternalAccess/Razor/Cohost/Handlers/GoToImplementation.cs
new file mode 100644
index 0000000000000..6124fb821981a
--- /dev/null
+++ b/src/Tools/ExternalAccess/Razor/Cohost/Handlers/GoToImplementation.cs
@@ -0,0 +1,25 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis.LanguageServer.Handler;
+using Microsoft.CodeAnalysis.Classification;
+using Microsoft.CodeAnalysis.Options;
+using Microsoft.CodeAnalysis.Text;
+
+namespace Microsoft.CodeAnalysis.ExternalAccess.Razor.Cohost.Handlers;
+
+using Location = Roslyn.LanguageServer.Protocol.Location;
+
+internal static class GoToImplementation
+{
+    public static Task<Location[]> FindImplementationsAsync(Document document, LinePosition linePosition, bool supportsVisualStudioExtensions, CancellationToken cancellationToken)
+    {
+        var globalOptions = document.Project.Solution.Services.ExportProvider.GetService<IGlobalOptionService>();
+        var classificationOptions = globalOptions.GetClassificationOptionsProvider();
+
+        return FindImplementationsHandler.FindImplementationsAsync(document, linePosition, classificationOptions, supportsVisualStudioExtensions, cancellationToken);
+    }
+}