Google's Antigravity Platform Launches Custom Agents With Execution Symmetry and Granular Command Controls

Google's Antigravity platform launches Custom Agents, offering developers flexible YAML-configured agents with execution symmetry, granular command controls, and nested lifecycle hooks to streamline workflows and manage task-specific AI operations more efficiently.

• Google's Antigravity platform introduces Custom Agents, specialized file-based configurations that reduce context window bloat and improve task efficiency by allowing developers to define scoped instructions, tools, and constraints for specific workflows.
• Unlike competing tools where custom agents are restricted to subagent roles, Antigravity enables true execution symmetry, letting custom agents run as either a main agent or a subagent through simple YAML frontmatter flags, giving developers direct interactive access to their specialized configurations.
• Custom agents in Antigravity also feature granular command execution policies and nested lifecycle hooks, allowing autonomous background execution of safe commands while keeping high-risk operations gated, and enabling precise script interception at key points in the agent's execution cycle.