NCP - Natural Context Provider

#!/usr/bin/env node /** * Test code execution using official Anthropic MCP SDK Client * Reproduces exact sequence that Claude Desktop sends */ const { Client } = require('@modelcontextprotocol/sdk/client/index.js'); const { StdioClientTransport } = require('@modelcontextprotocol/sdk/client/stdio.js'); const { spawn } = require('child_process'); async function testCodeExecution() { console.log('🧪 Testing Code Execution with MCP SDK Client\n'); console.log('='.repeat(60)); // Start NCP server const serverProcess = spawn('node', ['dist/index-mcp.js'], { stdio: ['pipe', 'pipe', 'pipe'], env: { ...process.env, NCP_ENABLE_CODE_MODE: 'true', NCP_ENABLE_SKILLS: 'true', NO_COLOR: 'true' } }); // Capture stderr for debugging const stderrLines = []; serverProcess.stderr.on('data', (data) => { const msg = data.toString(); stderrLines.push(msg); if (process.env.DEBUG) { console.log('[SERVER STDERR]', msg.trim()); } }); try { // Create transport and client const transport = new StdioClientTransport({ command: 'node', args: ['dist/index-mcp.js'], env: { ...process.env, NCP_ENABLE_CODE_MODE: 'true', NCP_ENABLE_SKILLS: 'true', NO_COLOR: 'true' } }); const client = new Client({ name: 'claude-ai', version: '0.1.0' }, { capabilities: {} }); // Connect console.log('1️⃣ Connecting to NCP server...'); await client.connect(transport); console.log('✅ Connected\n'); // List tools console.log('2️⃣ Listing tools...'); const toolsResponse = await client.listTools(); console.log('✅ Tools available:', toolsResponse.tools.map(t => t.name).join(', ')); const hasCodeTool = toolsResponse.tools.some(t => t.name === 'code'); if (!hasCodeTool) { console.error('❌ ERROR: "code" tool not found! Available:', toolsResponse.tools.map(t => t.name)); console.error(' This means code mode is not enabled properly.'); await client.close(); serverProcess.kill(); process.exit(1); } console.log(''); // Execute simple code EXACTLY as Claude Desktop sends it (with newlines) console.log('3️⃣ Executing code (with newlines like Claude Desktop): return "test"'); const codeResult = await client.callTool({ name: 'code', arguments: { code: '\nreturn "test"\n' } }); console.log(''); console.log('='.repeat(60)); console.log('📊 RESULT:'); console.log('='.repeat(60)); console.log(JSON.stringify(codeResult, null, 2)); console.log('='.repeat(60)); console.log(''); // Check for success if (codeResult.content && codeResult.content[0]) { const text = codeResult.content[0].text; if (text.includes('Unexpected token') || text.includes('Arg string terminates')) { console.log('❌ FAILED: Got parameter parsing error'); console.log('Error text:', text); } else if (text.includes('"test"')) { console.log('✅ SUCCESS: Code executed correctly and returned "test"!'); console.log(''); // Test more complex code console.log('4️⃣ Testing complex code with await...'); const complexResult = await client.callTool({ name: 'code', arguments: { code: ` const result = await Promise.resolve({ success: true, message: "Async works!" }); return result; `.trim() } }); console.log(''); console.log('='.repeat(60)); console.log('📊 COMPLEX CODE RESULT:'); console.log('='.repeat(60)); console.log(JSON.stringify(complexResult, null, 2)); console.log('='.repeat(60)); if (complexResult.content[0].text.includes('Async works!')) { console.log('✅ SUCCESS: Complex async code works!'); } else { console.log('❌ FAILED: Complex code did not execute correctly'); } } else { console.log('⚠️ UNEXPECTED: Got response but not the expected result'); console.log('Response text:', text); } } else if (codeResult.isError) { console.log('❌ FAILED: Code execution returned error'); } // Close connection await client.close(); serverProcess.kill(); console.log(''); console.log('='.repeat(60)); console.log('🏁 Test Complete'); console.log('='.repeat(60)); } catch (error) { console.error(''); console.error('='.repeat(60)); console.error('💥 ERROR:'); console.error('='.repeat(60)); console.error(error.message); console.error(''); console.error('Stack:', error.stack); console.error('='.repeat(60)); if (stderrLines.length > 0) { console.error(''); console.error('Server stderr:'); console.error(stderrLines.join('')); } serverProcess.kill(); process.exit(1); } } // Run test testCodeExecution().catch(error => { console.error('Test crashed:', error); process.exit(1); });