Open-sourced Antigravity-OS: a cross-platform runtime, dual-memory architecture, and 182-skill playbook for Google Antigravity, Gemini, and Claude Code.
GitHub: https://github.com/ratulbd/antigravity-os
It solves three common agent pain points:
Context amnesia: Uses a 4-Pillar protocol with Tree-sitter AST graphs (codebase-memory-mcp) and episodic memory (.trail/) to cut token usage by 85–95%.
Scope creep: Locks write boundaries (allowed_write_scope) so agents don't refactor unrelated files.
Premature completion: Gravitas validator gates physically block the agent from declaring "fixed" until a test runs after the last edit.
One-command installer for Windows (PowerShell), macOS, and Linux
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