diff --git a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Models/McpToolDefinition.cs b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Models/McpToolDefinition.cs
index 1c76a805b1..787b4e3802 100644
--- a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Models/McpToolDefinition.cs
+++ b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Models/McpToolDefinition.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Text.Json;
 
 namespace Volo.Abp.Cli.Commands.Models;
 
@@ -7,6 +8,7 @@ public class McpToolDefinition
     public string Name { get; set; }
     public string Description { get; set; }
     public McpToolInputSchema InputSchema { get; set; }
+    public JsonElement? OutputSchema { get; set; }
 }
 
 public class McpToolInputSchema
diff --git a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Services/AbpMcpServerTool.cs b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Services/AbpMcpServerTool.cs
index 71f0f206f6..6858cf7571 100644
--- a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Services/AbpMcpServerTool.cs
+++ b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Services/AbpMcpServerTool.cs
@@ -13,17 +13,20 @@ internal class AbpMcpServerTool : McpServerTool
     private readonly string _name;
     private readonly string _description;
     private readonly JsonElement _inputSchema;
+    private readonly JsonElement? _outputSchema;
     private readonly Func<RequestContext<CallToolRequestParams>, CancellationToken, ValueTask<CallToolResult>> _handler;
 
     public AbpMcpServerTool(
         string name,
         string description,
         JsonElement inputSchema,
+        JsonElement? outputSchema,
         Func<RequestContext<CallToolRequestParams>, CancellationToken, ValueTask<CallToolResult>> handler)
     {
         _name = name;
         _description = description;
         _inputSchema = inputSchema;
+        _outputSchema = outputSchema;
         _handler = handler;
     }
 
@@ -31,7 +34,8 @@ internal class AbpMcpServerTool : McpServerTool
     {
         Name = _name,
         Description = _description,
-        InputSchema = _inputSchema
+        InputSchema = _inputSchema,
+        OutputSchema = _outputSchema
     };
 
     public override IReadOnlyList<object> Metadata => Array.Empty<object>();
diff --git a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Services/McpServerService.cs b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Services/McpServerService.cs
index a591c42371..7be6af6688 100644
--- a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Services/McpServerService.cs
+++ b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/Commands/Services/McpServerService.cs
@@ -82,7 +82,7 @@ public class McpServerService : ITransientDependency
             ["required"] = toolDef.InputSchema?.Required ?? new List<string>()
         };
 
-        RegisterTool(options, toolDef.Name, toolDef.Description, inputSchemaObject);
+        RegisterTool(options, toolDef.Name, toolDef.Description, inputSchemaObject, toolDef.OutputSchema);
     }
 
     private Dictionary<string, object> ConvertProperties(Dictionary<string, McpToolProperty> properties)
@@ -121,7 +121,8 @@ public class McpServerService : ITransientDependency
         McpServerOptions options,
         string name,
         string description,
-        object inputSchema)
+        object inputSchema,
+        JsonElement? outputSchema)
     {
         if (options.ToolCollection == null)
         {
@@ -132,6 +133,7 @@ public class McpServerService : ITransientDependency
             name,
             description,
             JsonSerializer.SerializeToElement(inputSchema),
+            outputSchema,
             (context, cancellationToken) => HandleToolInvocationAsync(name, context, cancellationToken)
         );