Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add 2428424081cn/Skill-mcp --skill agy-customizationsgit clone --depth 1 https://github.com/2428424081cn/Skill-mcpWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/2428424081cn/skill-mcp/agy-customizations)<a href="https://agentmods.dev/skills/2428424081cn/skill-mcp/agy-customizations"><img src="https://agentmods.dev/badge/skills/2428424081cn/skill-mcp/agy-customizations/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/2428424081cn/skill-mcp/agy-customizations"><img src="https://agentmods.dev/badge/skills/2428424081cn/skill-mcp/agy-customizations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00051 | $0.01055 |
| Opus 5 | $0.00026 | $0.00528 |
| Sonnet 5 | $0.00010 | $0.00211 |
| Haiku 4.5 | $0.00005 | $0.00105 |
Grade B, and why
agy-customizations scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
* Path: `~/.gemini/config/` How it starts
The opening of the file, as written. The whole thing — 105 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Antigravity Customization System Guide
The Antigravity Customization System allows you to tailor the agent's behavior, teach it new workflows, enforce guidelines, and integrate it with external tools. By customizing the agent, you can transition it from a general-purpose assistant to an expert pair programmer specialized in your project's codebase and processes.
Customization Types: Quick Reference
Choose the right customization type based on your goal:
| Type | Config File/Folder | Scope | Best For | Learn More |
|---|---|---|---|---|
| Rules | GEMINI.md, AGENTS.md |
Contextual / Hierarchical | Enforcing coding styles, API restrictions, and local guidelines. | Rules Guide |
| Skills | skills/<name>/SKILL.md |
On-Demand (Progressive) | Teaching the agent multi-step procedures, runbooks, and tool workflows. | Skills Guide |
| Plugins | plugins/<name>/plugin.json |
Bundle | Packaging related skills, rules, and MCP configs into a single unit. | Plugins Guide |
| Hooks | hooks.json |
Lifecycle Event | Running scripts/commands at specific agent lifecycle points (e.g., pre-tool execution). | Hooks Guide |
| MCP Servers | mcp_config.json |
Tool Integration | Connecting the agent to external services and custom tool providers. | MCP Guide |
Customization Discovery and Locations
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 105 lines · 51 tokens per session scan B 4f8b0eab3c14
agy-customizations is a skill published in the GitHub repository 2428424081cn/Skill-mcp (1 stars, last pushed 16d ago), licensed MIT. It adds 51 tokens to every session and 1,055 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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