I built Karios, a Google Workspace Add-on that turns Google Calendar into a time-tracking and invoicing engine, and I used Antigravity 2.0 and its AI agents to do it. In this session I'll demo the full stack: how a calendar event enriched with client metadata flows through Cloud Run into BigQuery, generates PDF specifications, pulls invoices from Gmail, and drafts everything to Drive and email without leaving Google Workspace.

Along the way I'll be honest about where AI agents genuinely accelerated the Go development process and where they just got in the way. You'll leave with a reusable blueprint for building business tools on Google Workspace, and a realistic picture of what AI-paired development actually looks like today.