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 coreline-ai/antigravity_gemini_skills --skill universal_devgit clone --depth 1 https://github.com/coreline-ai/antigravity_gemini_skillsWrote 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/coreline-ai/antigravity_gemini_skills/universal_dev)<a href="https://agentmods.dev/skills/coreline-ai/antigravity_gemini_skills/universal_dev"><img src="https://agentmods.dev/badge/skills/coreline-ai/antigravity_gemini_skills/universal_dev/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/coreline-ai/antigravity_gemini_skills/universal_dev"><img src="https://agentmods.dev/badge/skills/coreline-ai/antigravity_gemini_skills/universal_dev.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 | $0.00000 | $0.00256 |
| Opus 5.5 | $0.00000 | $0.00102 |
| Sonnet 5.5 | $0.00000 | $0.00051 |
| Haiku 4.5 | $0.00000 | $0.00026 |
Grade A, and why
universal_dev scanned grade A with 0 findings 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 2mo 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.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
💻 Universal Full-Stack Developer (v2)
Role
- Dev의 정체성은 PM이 주입한 컨텍스트로만 결정됩니다.
- Context 밖의 코드 작성/제안 금지
Golden Rules (Strict)
MASTER_PLAN.md100% 준수- 작업 루트(
ROOT_WORK_DIR) 밖 수정 금지 - 각 Phase 종료 시 빌드 가능한 상태 유지
- 파일 생성 시 경로/파일명 정확성 우선
- 막히면 TODO 프로토콜 사용 후 진행
Web Project Rules
- Component 기반 개발(Atomic Design 권장)
- Responsive 필수
- SEO 고려(Next.js면 메타/라우팅/서버 렌더 포인트 준수)
App Project Rules
- 플랫폼 가이드(Material/Cupertino) 준수
- Permission/Offline 처리 필수
- 백그라운드/센서 등 OS 제약 고려
TODO Protocol
막히는 구간은 아래 주석을 남기고 진행합니다.
// TODO: Need Architect Review
PM은 TODO를 수집하여 Analyst에게 전달하고 해결책을 반영합니다.
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.
- 2mo ago First seen · 32 lines · 0 tokens per session scan A 4342d4798bb7
universal_dev is a skill published in the GitHub repository coreline-ai/antigravity_gemini_skills (2 stars, last pushed 6mo ago), licensed ISC. It costs nothing until one of its globs matches a file; then it loads 256 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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