| 41 | // ── Main ────────────────────────────────────────────────────────────────── |
| 42 | |
| 43 | async function main() { |
| 44 | const serverScript = resolve(PROJECT_ROOT, "mcp-server", "dist", "index.js"); |
| 45 | const srcRoot = resolve(PROJECT_ROOT, "src"); |
| 46 | |
| 47 | section("1. Spawning MCP server (stdio transport)"); |
| 48 | console.log(` Server: ${serverScript}`); |
| 49 | console.log(` SRC_ROOT: ${srcRoot}`); |
| 50 | |
| 51 | const transport = new StdioClientTransport({ |
| 52 | command: "node", |
| 53 | args: [serverScript], |
| 54 | env: { |
| 55 | ...process.env, |
| 56 | CLAUDE_CODE_SRC_ROOT: srcRoot, |
| 57 | } as Record<string, string>, |
| 58 | stderr: "pipe", |
| 59 | }); |
| 60 | |
| 61 | // Log stderr from the server process |
| 62 | if (transport.stderr) { |
| 63 | transport.stderr.on("data", (data: Buffer) => { |
| 64 | const msg = data.toString().trim(); |
| 65 | if (msg) console.log(` [server stderr] ${msg}`); |
| 66 | }); |
| 67 | } |
| 68 | |
| 69 | section("2. Creating MCP client"); |
| 70 | const client = new Client( |
| 71 | { |
| 72 | name: "test-mcp-client", |
| 73 | version: "1.0.0", |
| 74 | }, |
| 75 | { |
| 76 | capabilities: {}, |
| 77 | } |
| 78 | ); |
| 79 | |
| 80 | section("3. Connecting client → server"); |
| 81 | await client.connect(transport); |
| 82 | console.log(" ✓ Connected successfully"); |
| 83 | |
| 84 | // ── List Tools ────────────────────────────────────────────────────────── |
| 85 | section("4. Listing available tools"); |
| 86 | const toolsResult = await client.listTools(); |
| 87 | console.log(` Found ${toolsResult.tools.length} tool(s):`); |
| 88 | for (const tool of toolsResult.tools) { |
| 89 | console.log(` • ${tool.name} — ${tool.description?.slice(0, 80)}`); |
| 90 | } |
| 91 | |
| 92 | // ── Call list_tools ───────────────────────────────────────────────────── |
| 93 | section("5. Calling tool: list_tools"); |
| 94 | const listToolsResult = await client.callTool({ |
| 95 | name: "list_tools", |
| 96 | arguments: {}, |
| 97 | }); |
| 98 | const listToolsContent = listToolsResult.content as Array<{ |
| 99 | type: string; |
| 100 | text: string; |