🚀 Antigravity Skill Porter & Optimizer

Bridge the AI Agent Ecosystem: The ultimate transpiler and optimizer that imports, converts, and elevates agent skills from Claude Code, Cursor, and OpenAI into high-performance, native Google Antigravity (AGY) plugins and multi-agent workflows.

💡 Why This Exists

The AI agent community is experiencing rapid innovation, with developers publishing thousands of open-standard SKILL.md workflows for Claude Code and Cursor.

However, running external skills inside Google Antigravity naively creates severe friction:

• ❌ Tool Hallucinations: External skills hardcode Claude-specific tools (Bash, Glob, Read, Edit, StrReplaceEditor) which fail or cause confusion in Antigravity.
• ❌ Context Blindness: They search for CLAUDE.md, ignoring Antigravity's GEMINI.md, AGENTS.md, and hierarchical .agents/rules/.
• ❌ Single-Agent Bottlenecks: Claude skills are serialized for linear chat loops. They fail to tap Antigravity's native parallel subagent dispatch (invoke_subagent) with non-blocking Reactive Wakeup.
• ❌ Missing Packaging: They lack plugin.json manifests, preventing toggling and management via Antigravity's UI.

antigravity-skill-porter solves this in one command. It deterministically maps tools, synthesizes plugin manifests, injects multi-agent parallelism, and delivers ready-to-run Antigravity plugins.

✨ Features

• 🌐 Direct Ingestion from Any Source:
  • Ingest directly from GitHub URLs: https://github.com/owner/repo
  • Ingest specific subfolders/trees: https://github.com/owner/repo/tree/main/skills/sub-skill
  • Ingest multi-skill plugin bundles automatically (e.g. slavingia/skills)
  • Ingest local directories or standalone SKILL.md files
• 🔄 Deterministic Tool Translation:

  Legacy Claude Tool / File	Antigravity Native Equivalent
  CLAUDE.md, claude.md	GEMINI.md, AGENTS.md
  Bash	run_command
  Read / cat	view_file
  Glob	find_by_name
  Grep	grep_search
  Edit / StrReplaceEditor	replace_file_content
  Write	write_to_file

• ⚡ Multi-Agent & Subagent Up-Leveling:
  • Detects parallelizable steps and injects Antigravity's invoke_subagent batch arrays with Reactive Wakeup mechanics.
• 📦 Dual Packaging:
  • Automatically generates plugin.json manifests.
  • Installs to both Global Plugins (~/.gemini/config/plugins/<name>/) and Global Skills (~/.gemini/config/skills/<name>/).
  • Supports --workspace installation to install strictly into the project's .agents/skills/ (preventing global config pollution).
• 🔍 Interactive Diff & Dry-Run Mode:
  • Run --dry-run to inspect a unified diff before any files are written to disk.

⚡ Quickstart

1. Run via CLI (Python 3.8+)

Clone the repository and port any skill instantly:

git clone https://github.com/Pranav-Nexus/antigravity-skill-porter.git
cd antigravity-skill-porter

# 1. Preview changes with dry-run
python port_skill.py https://github.com/aiwithremy/claude-skills-llm-council --dry-run

# 2. Port and install globally into Antigravity
python port_skill.py https://github.com/aiwithremy/claude-skills-llm-council

# 3. Port a multi-skill plugin repository
python port_skill.py https://github.com/slavingia/skills

2. Install as an Antigravity Native Skill

You can also use this tool directly inside Antigravity as a skill:

1. Clone or copy this repository into ~/.gemini/config/plugins/skill-porter/:

   git clone https://github.com/Pranav-Nexus/antigravity-skill-porter.git ~/.gemini/config/plugins/skill-porter
   

2. In any Antigravity chat, simply ask:

   "Import and optimize this skill for Antigravity: https://github.com/owner/repo"

Because the skill is organized under skills/skill-porter/SKILL.md, Antigravity will automatically discover and register it in your sessions.

🧪 Tested & Verified Examples

Included in the examples/ directory are pre-ported, verified skills:

1. llm-council: Karpathy-style 5-advisor council with blind peer review, converted from Claude Code to Antigravity parallel subagents (invoke_subagent).
2. frontend-design: Anthropic's official frontend design craft skill, optimized for Antigravity with modern web guidance and visual inspection hooks.
3. minimalist-entrepreneur: Sahil Lavingia's full 10-skill business suite, converted from .claude-plugin into a unified Antigravity plugin bundle.

🤝 Contributing & Community

Contributions, issues, and feature requests are welcome!

• Have a skill you want pre-ported? Open an Issue or submit a PR into examples/.
• Want to add support for new agent platforms? Check out skills/skill-porter/references/translation_rules.md.

If this tool saved you time or improved your Antigravity workflows, please drop a star ⭐ on GitHub! It helps other agentic developers discover the project.

📄 License

MIT © Pranav-Nexus