Use an official supported Node.js release. No dependency installation is required. Run node server.js, then request http://127.0.0.1:3000/tasks. POST JSON {"title":"Pack workshop kits"}; PATCH /tasks/1 with {"done":true}. Run node test_api.js for actual local HTTP checks. Restart clears all tasks. This teaching server has no authentication or persistent storage and must remain bound to localhost.