add very simple test client

Author: pcarleton

examples/clients/typescript/test1.ts

@@ -0,0 +1,47 @@
+#!/usr/bin/env node
+
+import { Client } from '@modelcontextprotocol/sdk/client/index.js';
+import { StreamableHTTPClientTransport } from '@modelcontextprotocol/sdk/client/streamableHttp.js';
+
+async function main(): Promise<void> {
+  const serverUrl = process.argv[2];
+
+  if (!serverUrl) {
+    console.error('Usage: test-client <server-url>');
+    process.exit(1);
+  }
+
+  console.log(`Connecting to MCP server at: ${serverUrl}`);
+
+  try {
+    const client = new Client({
+      name: 'test-client',
+      version: '1.0.0'
+    }, {
+      capabilities: {}
+    });
+
+    const transport = new StreamableHTTPClientTransport(
+      new URL(serverUrl)
+    );
+
+    await client.connect(transport);
+    console.log('✅ Successfully connected to MCP server');
+
+    await client.listTools();
+    console.log('✅ Successfully listed tools');
+
+    await transport.close();
+    console.log('✅ Connection closed successfully');
+
+    process.exit(0);
+  } catch (error) {
+    console.error('❌ Failed to connect to MCP server:', error);
+    process.exit(1);
+  }
+}
+
+main().catch((error) => {
+  console.error('Unhandled error:', error);
+  process.exit(1);
+});