Google I/O Releases AI Agent Development Toolchain

谷歌I/O大会发布AI代理全套开发工具链

Google announced an AI agent development and deployment toolchain at I/O, including Antigravity 2.0, managed agent services in the Gemini API, WebMCP in Chrome 149, and Chrome DevTools access for automated agent debugging.

Why it matters: HKR-H/K/R all pass: Google is shipping a named agent stack across tooling, managed services, WebMCP, and Chrome. Single-source social summary lacks pricing, API details, and demos, so it stays in the 78–84 band.