Google Antigravity powers upcoming Gemini Spark agents
google's gemini spark agent runs on a closed-source go binary called antigravity, replacing the open-source gemini cli tool on june 18th.
simon willison analyzed google i/o announcements, highlighting gemini spark, an agent that integrates with gmail, drive, and other google services. spark relies on 'antigravity', a closed-source go runtime and sdk, which replaces the previous apache-licensed typescript cli tool on june 18th. security details reveal spark executes every task in a strictly isolated, ephemeral vm to prevent data crossover between sessions, relying on an agent gateway for dlp enforcement. this architecture aims to secure sensitive enterprise data against prompt injection attacks as google rolls out agents broadly.