Day 5 — Skills, Extensions & Production

Skills are the open standard for extending agent capabilities. Both Gemini CLI and Antigravity support the agentskills.io specification. Skills are markdown files with YAML frontmatter that teach an agent how to do specific tasks. Extensions connect external tools. And production deployment puts agents into team workflows. Today covers the skill ecosystem, browser-in-the-loop agents, Firebase integration, and enterprise deployment.

Lessons

1. The agentskills.io Standard — writing SKILL.md files, skill directories, and progressive disclosure
2. Browser-in-the-Loop Agents — agents that control a browser for frontend work and testing
3. Firebase & Cloud Integration — Firebase Skills, Cloud Shell, and Cloud Workstations
4. Enterprise Deployment — Gemini Enterprise, team management, and security
5. Building a Skill Library — organizing, versioning, and sharing skills across a team

Next: Capstone: Multi-Agent Dev Pipeline