feat: Add OpenAPI support with comprehensive configuration options and client integration (#184)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

test-openapi.ts

@@ -0,0 +1,64 @@
+// Test script to verify OpenAPI server functionality
+// Run this in the MCPHub project directory with: tsx test-openapi.ts
+
+import { OpenAPIClient } from './src/clients/openapi.js';
+import type { ServerConfig } from './src/types/index.js';
+
+async function testOpenAPIClient() {
+  console.log('Testing OpenAPI client...');
+
+  // Test configuration
+  const testConfig: ServerConfig = {
+    type: 'openapi',
+    openapi: {
+      url: 'https://petstore3.swagger.io/api/v3/openapi.json', // Public Swagger Petstore API
+      version: '3.1.0',
+      security: {
+        type: 'none',
+      },
+    },
+    headers: {
+      'Content-Type': 'application/json',
+    },
+  };
+
+  try {
+    // Initialize the OpenAPI client
+    const client = new OpenAPIClient(testConfig);
+    await client.initialize();
+
+    console.log('✅ OpenAPI client initialized successfully');
+
+    // Get available tools
+    const tools = client.getTools();
+    console.log(`✅ Found ${tools.length} tools:`);
+
+    tools.slice(0, 5).forEach((tool) => {
+      console.log(`  - ${tool.name}: ${tool.description}`);
+    });
+
+    // Test a simple GET operation if available
+    const getTool = tools.find(
+      (tool) => tool.method === 'get' && tool.path.includes('/pet') && !tool.path.includes('{'),
+    );
+
+    if (getTool) {
+      console.log(`\n🔧 Testing tool: ${getTool.name}`);
+      try {
+        const result = await client.callTool(getTool.name, {});
+        console.log('✅ Tool call successful');
+        console.log('Result type:', typeof result);
+      } catch (error) {
+        console.log('⚠️ Tool call failed (expected for demo API):', (error as Error).message);
+      }
+    }
+
+    console.log('\n🎉 OpenAPI integration test completed!');
+  } catch (error) {
+    console.error('❌ Test failed:', error);
+    process.exit(1);
+  }
+}
+
+// Run the test
+testOpenAPIClient().catch(console.error);