Formatting

client/src/App.tsx

@@ -1526,6 +1526,9 @@ const App = () => {
                       error={errors.prompts}
                     />
                     <ToolsTab
+                      serverSupportsTaskRequests={
+                        !!serverCapabilities?.tasks?.requests?.tools?.call
+                      }
                       tools={tools}
                       listTools={() => {
                         clearError("tools");

client/src/components/ToolsTab.tsx

@@ -177,6 +177,7 @@ const ToolsTab = ({
   error,
   resourceContent,
   onReadResource,
+  serverSupportsTaskRequests,
 }: {
   tools: Tool[];
   listTools: () => void;
@@ -195,6 +196,7 @@ const ToolsTab = ({
   error: string | null;
   resourceContent: Record<string, string>;
   onReadResource?: (uri: string) => void;
+  serverSupportsTaskRequests: boolean;
 }) => {
   const [params, setParams] = useState<Record<string, unknown>>({});
   const [runAsTask, setRunAsTask] = useState(false);
@@ -239,15 +241,17 @@ const ToolsTab = ({
       ];
     });
     setParams(Object.fromEntries(params));
-    const taskSupport = getTaskSupport(selectedTool);
+    const toolTaskSupport = serverSupportsTaskRequests
-    setRunAsTask(taskSupport === "required");
+      ? getTaskSupport(selectedTool)
+      : "forbidden";
+    setRunAsTask(toolTaskSupport === "required");
 
     // Reset validation errors when switching tools
     setHasValidationErrors(false);
 
     // Clear form refs for the previous tool
     formRefs.current = {};
-  }, [selectedTool]);
+  }, [selectedTool, serverSupportsTaskRequests]);
 
   const hasReservedMetadataEntry = metadataEntries.some(({ key }) => {
     const trimmedKey = key.trim();
@@ -264,7 +268,9 @@ const ToolsTab = ({
     return trimmedKey !== "" && !hasValidMetaName(trimmedKey);
   });
 
-  const taskSupport = getTaskSupport(selectedTool);
+  const taskSupport = serverSupportsTaskRequests
+    ? getTaskSupport(selectedTool)
+    : "forbidden";
 
   return (
     <TabsContent value="tools">

client/src/components/__tests__/ToolsTab.test.tsx

@@ -73,6 +73,7 @@ describe("ToolsTab", () => {
     error: null,
     resourceContent: {},
     onReadResource: jest.fn(),
+    serverSupportsTaskRequests: true,
   };
 
   const renderToolsTab = (props = {}) => {
@@ -155,6 +156,38 @@ describe("ToolsTab", () => {
     expect(requiredCheckbox).toBeDisabled();
   });
 
+  it("should hide run-as-task checkbox when serverSupportsTaskRequests is false even for required/optional tools", async () => {
+    const requiredTool: ExtendedTool = {
+      ...mockTools[0],
+      name: "requiredTool",
+      execution: { taskSupport: "required" },
+    };
+    const optionalTool: ExtendedTool = {
+      ...mockTools[0],
+      name: "optionalTool",
+      execution: { taskSupport: "optional" },
+    };
+
+    const { rerender } = renderToolsTab({
+      selectedTool: requiredTool,
+      serverSupportsTaskRequests: false,
+    });
+
+    expect(screen.queryByLabelText(/run as task/i)).not.toBeInTheDocument();
+
+    rerender(
+      <Tabs defaultValue="tools">
+        <ToolsTab
+          {...defaultProps}
+          selectedTool={optionalTool}
+          serverSupportsTaskRequests={false}
+        />
+      </Tabs>,
+    );
+
+    expect(screen.queryByLabelText(/run as task/i)).not.toBeInTheDocument();
+  });
+
   it("should handle integer type inputs", async () => {
     renderToolsTab({
       selectedTool: mockTools[1], // Use the tool with integer type