Merge pull request modelcontextprotocol#662 from alex210501/alejandro.borbolla/copy-input

feat: Copy the tool input parameters

Author: olaservo

client/src/components/JsonView.tsx

@@ -1,10 +1,11 @@
-import { useState, memo, useMemo, useCallback, useEffect } from "react";
+import { useState, memo, useMemo, useCallback } from "react";
 import type { JsonValue } from "@/utils/jsonUtils";
 import clsx from "clsx";
 import { Copy, CheckCheck } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { useToast } from "@/lib/hooks/useToast";
 import { getDataType, tryParseJson } from "@/utils/jsonUtils";
+import useCopy from "@/lib/hooks/useCopy";
 
 interface JsonViewProps {
   data: unknown;
@@ -25,21 +26,7 @@ const JsonView = memo(
     isError = false,
   }: JsonViewProps) => {
     const { toast } = useToast();
-    const [copied, setCopied] = useState(false);
-
-    useEffect(() => {
-      let timeoutId: NodeJS.Timeout;
-      if (copied) {
-        timeoutId = setTimeout(() => {
-          setCopied(false);
-        }, 500);
-      }
-      return () => {
-        if (timeoutId) {
-          clearTimeout(timeoutId);
-        }
-      };
-    }, [copied]);
+    const { copied, setCopied } = useCopy();
 
     const normalizedData = useMemo(() => {
       return typeof data === "string"

client/src/components/ToolsTab.tsx

@@ -17,11 +17,20 @@ import {
   ListToolsResult,
   Tool,
 } from "@modelcontextprotocol/sdk/types.js";
-import { Loader2, Send, ChevronDown, ChevronUp } from "lucide-react";
+import {
+  Loader2,
+  Send,
+  ChevronDown,
+  ChevronUp,
+  Copy,
+  CheckCheck,
+} from "lucide-react";
 import { useEffect, useState } from "react";
 import ListPane from "./ListPane";
 import JsonView from "./JsonView";
 import ToolResults from "./ToolResults";
+import { useToast } from "@/lib/hooks/useToast";
+import useCopy from "@/lib/hooks/useCopy";
 
 // Type guard to safely detect the optional _meta field without using `any`
 const hasMeta = (tool: Tool): tool is Tool & { _meta: unknown } =>
@@ -55,6 +64,8 @@ const ToolsTab = ({
   const [isToolRunning, setIsToolRunning] = useState(false);
   const [isOutputSchemaExpanded, setIsOutputSchemaExpanded] = useState(false);
   const [isMetaExpanded, setIsMetaExpanded] = useState(false);
+  const { toast } = useToast();
+  const { copied, setCopied } = useCopy();
 
   useEffect(() => {
     const params = Object.entries(
@@ -291,29 +302,54 @@ const ToolsTab = ({
                       </div>
                     </div>
                   )}
-                <Button
-                  onClick={async () => {
-                    try {
-                      setIsToolRunning(true);
-                      await callTool(selectedTool.name, params);
-                    } finally {
-                      setIsToolRunning(false);
-                    }
-                  }}
-                  disabled={isToolRunning}
-                >
-                  {isToolRunning ? (
-                    <>
-                      <Loader2 className="w-4 h-4 mr-2 animate-spin" />
-                      Running...
-                    </>
-                  ) : (
-                    <>
-                      <Send className="w-4 h-4 mr-2" />
-                      Run Tool
-                    </>
-                  )}
-                </Button>
+                <div className="flex gap-2">
+                  <Button
+                    onClick={async () => {
+                      try {
+                        setIsToolRunning(true);
+                        await callTool(selectedTool.name, params);
+                      } finally {
+                        setIsToolRunning(false);
+                      }
+                    }}
+                    disabled={isToolRunning}
+                  >
+                    {isToolRunning ? (
+                      <>
+                        <Loader2 className="w-4 h-4 mr-2 animate-spin" />
+                        Running...
+                      </>
+                    ) : (
+                      <>
+                        <Send className="w-4 h-4 mr-2" />
+                        Run Tool
+                      </>
+                    )}
+                  </Button>
+                  <Button
+                    onClick={async () => {
+                      try {
+                        navigator.clipboard.writeText(
+                          JSON.stringify(params, null, 2),
+                        );
+                        setCopied(true);
+                      } catch (error) {
+                        toast({
+                          title: "Error",
+                          description: `There was an error copying input to the clipboard: ${error instanceof Error ? error.message : String(error)}`,
+                          variant: "destructive",
+                        });
+                      }
+                    }}
+                  >
+                    {copied ? (
+                      <CheckCheck className="h-4 w-4 mr-2 dark:text-green-700 text-green-600" />
+                    ) : (
+                      <Copy className="h-4 w-4 mr-2" />
+                    )}
+                    Copy Input
+                  </Button>
+                </div>
                 <ToolResults
                   toolResult={toolResult}
                   selectedTool={selectedTool}

client/src/lib/hooks/useCopy.ts

@@ -0,0 +1,29 @@
+"use client";
+
+import { useEffect, useState } from "react";
+
+type UseCopyProps = {
+  timeout?: number;
+};
+
+function useCopy({ timeout = 500 }: UseCopyProps = {}) {
+  const [copied, setCopied] = useState(false);
+
+  useEffect(() => {
+    let timeoutId: NodeJS.Timeout;
+    if (copied) {
+      timeoutId = setTimeout(() => {
+        setCopied(false);
+      }, timeout);
+    }
+    return () => {
+      if (timeoutId) {
+        clearTimeout(timeoutId);
+      }
+    };
+  }, [copied]);
+
+  return { copied, setCopied };
+}
+
+export default useCopy;