diff --git a/src/Squidex/Areas/Api/Config/OpenApi/OpenApiServices.cs b/src/Squidex/Areas/Api/Config/OpenApi/OpenApiServices.cs
index c5a2f8e5d..f8f055ee4 100644
--- a/src/Squidex/Areas/Api/Config/OpenApi/OpenApiServices.cs
+++ b/src/Squidex/Areas/Api/Config/OpenApi/OpenApiServices.cs
@@ -32,6 +32,9 @@ namespace Squidex.Areas.Api.Config.OpenApi
             services.AddSingletonAs<ThemeProcessor>()
                 .As<IDocumentProcessor>();
 
+            services.AddSingletonAs<VersionProcessor>()
+                .As<IDocumentProcessor>();
+
             services.AddSingletonAs<XmlTagProcessor>()
                 .As<IDocumentProcessor>();
 
diff --git a/src/Squidex/Areas/Api/Config/OpenApi/ThemeProcessor.cs b/src/Squidex/Areas/Api/Config/OpenApi/ThemeProcessor.cs
index 62cb20c48..eda3eb2f3 100644
--- a/src/Squidex/Areas/Api/Config/OpenApi/ThemeProcessor.cs
+++ b/src/Squidex/Areas/Api/Config/OpenApi/ThemeProcessor.cs
@@ -26,7 +26,7 @@ namespace Squidex.Areas.Api.Config.OpenApi
 
         public void Process(DocumentProcessorContext context)
         {
-            context.Document.BasePath = $"{Constants.ApiPrefix}/";
+            context.Document.BasePath = Constants.ApiPrefix;
 
             context.Document.Info.ExtensionData = new Dictionary<string, object>
             {
diff --git a/src/Squidex/Areas/Api/Config/OpenApi/VersionProcessor.cs b/src/Squidex/Areas/Api/Config/OpenApi/VersionProcessor.cs
new file mode 100644
index 000000000..5a150f082
--- /dev/null
+++ b/src/Squidex/Areas/Api/Config/OpenApi/VersionProcessor.cs
@@ -0,0 +1,31 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using NSwag.Generation.Processors;
+using NSwag.Generation.Processors.Contexts;
+using Squidex.Web;
+
+namespace Squidex.Areas.Api.Config.OpenApi
+{
+    public sealed class VersionProcessor : IDocumentProcessor
+    {
+        private readonly ExposedValues exposedValues;
+
+        public VersionProcessor(ExposedValues exposedValues)
+        {
+            this.exposedValues = exposedValues;
+        }
+
+        public void Process(DocumentProcessorContext context)
+        {
+            if (exposedValues.TryGetValue("version", out var version))
+            {
+                context.Document.Info.Version = version;
+            }
+        }
+    }
+}
diff --git a/src/Squidex/Areas/Api/Controllers/Contents/Generator/SchemasOpenApiGenerator.cs b/src/Squidex/Areas/Api/Controllers/Contents/Generator/SchemasOpenApiGenerator.cs
index 6e502cf24..db56218fa 100644
--- a/src/Squidex/Areas/Api/Controllers/Contents/Generator/SchemasOpenApiGenerator.cs
+++ b/src/Squidex/Areas/Api/Controllers/Contents/Generator/SchemasOpenApiGenerator.cs
@@ -9,7 +9,6 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using Microsoft.AspNetCore.Http;
-using Microsoft.Extensions.Options;
 using Namotion.Reflection;
 using NJsonSchema;
 using NJsonSchema.Generation;
@@ -23,23 +22,19 @@ using Squidex.Domain.Apps.Entities.Apps;
 using Squidex.Domain.Apps.Entities.Schemas;
 using Squidex.Infrastructure;
 using Squidex.Pipeline.OpenApi;
-using Squidex.Web;
 
 namespace Squidex.Areas.Api.Controllers.Contents.Generator
 {
     public sealed class SchemasOpenApiGenerator
     {
-        private readonly UrlsOptions urlOptions;
         private readonly OpenApiDocumentGeneratorSettings settings = new OpenApiDocumentGeneratorSettings();
         private OpenApiSchemaGenerator schemaGenerator;
         private OpenApiDocument document;
         private JsonSchema statusSchema;
         private JsonSchemaResolver schemaResolver;
 
-        public SchemasOpenApiGenerator(IOptions<UrlsOptions> urlOptions, IEnumerable<IDocumentProcessor> documentProcessors)
+        public SchemasOpenApiGenerator(IEnumerable<IDocumentProcessor> documentProcessors)
         {
-            this.urlOptions = urlOptions.Value;
-
             settings.ConfigureSchemaSettings();
 
             foreach (var processor in documentProcessors)
@@ -50,7 +45,7 @@ namespace Squidex.Areas.Api.Controllers.Contents.Generator
 
         public OpenApiDocument Generate(HttpContext httpContext, IAppEntity app, IEnumerable<ISchemaEntity> schemas)
         {
-            document = NSwagHelper.CreateApiDocument(httpContext, urlOptions, app.Name);
+            document = NSwagHelper.CreateApiDocument(httpContext, app.Name);
 
             schemaGenerator = new OpenApiSchemaGenerator(settings);
             schemaResolver = new OpenApiSchemaResolver(document, settings);
diff --git a/src/Squidex/Areas/Api/Views/Shared/Docs.cshtml b/src/Squidex/Areas/Api/Views/Shared/Docs.cshtml
index b32732b73..2781fc1dd 100644
--- a/src/Squidex/Areas/Api/Views/Shared/Docs.cshtml
+++ b/src/Squidex/Areas/Api/Views/Shared/Docs.cshtml
@@ -17,8 +17,19 @@
     </style>
 </head>
 <body>
-    <redoc spec-url="@Url.Content(Model.Specification)"></redoc>
+    <div id="redoc-container"></div>
 
     <script src="https://cdn.jsdelivr.net/npm/redoc@next/bundles/redoc.standalone.js"></script>
+    <script>
+        Redoc.init('@Url.Content(Model.Specification)', {
+            theme: {
+                colors: {
+                    primary: {
+                        main: '#3f83df'
+                    }
+                }
+            },
+        }, document.getElementById('redoc-container'))
+    </script>
 </body>
 </html>
\ No newline at end of file
diff --git a/src/Squidex/Docs/schemabody.md b/src/Squidex/Docs/schemabody.md
index 57a6e9d40..4f1830f1a 100644
--- a/src/Squidex/Docs/schemabody.md
+++ b/src/Squidex/Docs/schemabody.md
@@ -1,7 +1,6 @@
 The data of the content to be created or updated.
             
 Please note that each field is an object with one entry per language. 
-If the field is not localizable you must use iv (Invariant Language) as a key.
-When you change the field to be localizable the value will become the value for the master language, depending what the master language is at this point of time.
+If the field is not localizable you must use `iv` (Invariant Language) as a key.
 
 Read more about it at: https://docs.squidex.io/04-guides/02-api.html
\ No newline at end of file
diff --git a/src/Squidex/Pipeline/OpenApi/NSwagHelper.cs b/src/Squidex/Pipeline/OpenApi/NSwagHelper.cs
index 3aa04f1d3..67efac0bd 100644
--- a/src/Squidex/Pipeline/OpenApi/NSwagHelper.cs
+++ b/src/Squidex/Pipeline/OpenApi/NSwagHelper.cs
@@ -11,7 +11,6 @@ using System.IO;
 using Microsoft.AspNetCore.Http;
 using NJsonSchema;
 using NSwag;
-using Squidex.Web;
 
 namespace Squidex.Pipeline.OpenApi
 {
@@ -30,7 +29,7 @@ namespace Squidex.Pipeline.OpenApi
             }
         }
 
-        public static OpenApiDocument CreateApiDocument(HttpContext context, UrlsOptions urlOptions, string appName)
+        public static OpenApiDocument CreateApiDocument(HttpContext context, string appName)
         {
             var scheme =
                 string.Equals(context.Request.Scheme, "http", StringComparison.OrdinalIgnoreCase) ?