Extend Antigravity CLI with plugins, skills, and agents

Antigravity CLI can be extended with plugins — packages that add custom skills or specialized agents to the core agent. When you install a plugin, the CLI automatically scans your plugin directories and makes the new capabilities available without any manual registration step.

How plugin discovery works

When the CLI starts, it scans your installed plugin directories and registers any custom skills or specialized agents it finds. You do not need to restart the CLI or edit a configuration file; the scan happens automatically so that newly installed plugins are picked up on the next launch.

What are skills?

Skills are custom capabilities you can add to the agent. A skill typically provides the agent with specialized instructions, workflows, or domain-specific knowledge — for example, a skill for a particular framework or internal toolchain. Once discovered, a skill is available for the agent to invoke during a session.

What are specialized agents?

Specialized agents are fully scoped agent definitions that focus on a particular task or domain. Unlike skills, which extend what the existing agent knows, a specialized agent operates as its own agent with its own configuration. Both skills and specialized agents are discovered and loaded through the same plugin directory scan.