Building a Personal AI Agent in a couple of Hours

A developer and manager shares how they built a personal AI assistant called Fernão using Claude Code, Google AntiGravity, and Gemini Pro in just a few hours. The assistant handles daily scheduling by integrating Google Calendar (via ICS), Microsoft To Do, and Notion objectives into a single prompt that generates a structured daily plan. The post includes actual Python code for calendar and task fetching, the scheduling prompt template, and reflections on how AI-assisted building is changing the developer role — pushing even individual contributors toward coordination and management skills rather than pure implementation.