AG Kit is an agent engineering toolkit that provides a complete workspace structure for building AI agents on the Google Antigravity runtime.
The tool solves the problem of setting up and managing agent-based systems by installing a standardized `.agents/` workspace contract with built-in support for rules, skills, specialist agents, workflows, and persistent memory. It includes intelligent routing across twenty role definitions, orchestration commands, Model Context Protocol integration, and a native safety hook that prevents destructive filesystem operations like root deletion and drive formatting while allowing normal project cleanup. The approach bundles these capabilities into a local Antigravity plugin with validation through CI checks, regression tests, and dependency review.
Developers should choose this tool if they are building agents within a Google Antigravity workspace and need a structured, production-ready foundation. It suits projects that require persistent context management, multi-agent orchestration, and safety guardrails for tool use. The tool requires Node.js 22 or newer for repository-level tooling, Python 3.10 or newer for validators, and a trusted Antigravity workspace. The native safety hook is deliberately narrow and does not replace Antigravity's own permissions, sandboxing, or human approval workflows. The project provides a production checklist, security documentation, and migration guidance for teams adopting it.
The project maintains a substantial base of adopters who report real-world issues, with almost all open issues raised by outside users rather than the core team. Maintainers typically respond to new issues and pull requests within a day.
