diff --git a/src/services/tools/toolExecution.ts b/src/services/tools/toolExecution.ts
index d2d6d90..ccf98a8 100644
--- a/src/services/tools/toolExecution.ts
+++ b/src/services/tools/toolExecution.ts
@@ -1473,10 +1473,8 @@ async function checkPermissionsAndCallTool(
       })
     }
 
-    // TOOD(hackyon): refactor so we don't have different experiences for MCP tools
-    if (!isMcpTool(tool)) {
-      await addToolResult(toolOutput, mappedToolResultBlock)
-    }
+    // All tools get the same rendering path — no MCP/built-in bifurcation
+    await addToolResult(toolOutput, mappedToolResultBlock)
 
     const postToolHookInfos: StopHookInfo[] = []
     const postToolHookStart = Date.now()
@@ -1537,10 +1535,6 @@ async function checkPermissionsAndCallTool(
       )
     }
 
-    if (isMcpTool(tool)) {
-      await addToolResult(toolOutput)
-    }
-
     // Show PostToolUse hook timing inline below tool result when > 500ms.
     // Use wall-clock time (not sum of individual durations) since hooks run in parallel.
     if (process.env.USER_TYPE === 'ant' && postToolHookInfos.length > 0) {
diff --git a/src/tools/MCPTool/MCPTool.ts b/src/tools/MCPTool/MCPTool.ts
index 3896868..9f80983 100644
--- a/src/tools/MCPTool/MCPTool.ts
+++ b/src/tools/MCPTool/MCPTool.ts
@@ -15,7 +15,7 @@ export const inputSchema = lazySchema(() => z.object({}).passthrough())
 type InputSchema = ReturnType<typeof inputSchema>
 
 export const outputSchema = lazySchema(() =>
-  z.string().describe('MCP tool execution result'),
+  z.any().describe('MCP tool execution result'),
 )
 type OutputSchema = ReturnType<typeof outputSchema>