Google ADK Finally Gets It: Skills are here and they’re absolutely wild

“Your AI agent can follow instructions. But can it write new ones?” - Google Developers Blog, April 2026 I’ve been building AI agents for a while now. And if there’s one thing that every developer hits eventually, it’s the context window wall. You start packing your system prompt with everything your agent might ever need - weather logic, compliance checklists, security review steps, data validation rules,and before you know it, you’re burning thousands of tokens before the user has even said hello. For a long time, the industry’s answer was: just make the context window bigger.