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 porcupine-md/jonggrang --skill gateway-frontendgit clone --depth 1 https://github.com/porcupine-md/jonggrangWrote 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/porcupine-md/jonggrang/gateway-frontend)<a href="https://agentmods.dev/skills/porcupine-md/jonggrang/gateway-frontend"><img src="https://agentmods.dev/badge/skills/porcupine-md/jonggrang/gateway-frontend/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/porcupine-md/jonggrang/gateway-frontend"><img src="https://agentmods.dev/badge/skills/porcupine-md/jonggrang/gateway-frontend.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00028 | $0.00600 |
| Opus 5 | $0.00014 | $0.00300 |
| Sonnet 5 | $0.00006 | $0.00120 |
| Haiku 4.5 | $0.00003 | $0.00060 |
Grade A, and why
gateway-frontend 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 11d 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
Purpose
You are the Frontend Gateway. Detect intent from the current task and return the exact library skill paths to load. Do NOT execute — only route.
Intent Detection → Skill Routing
| Intent Keywords | Load Skill |
|---|---|
infinite loop, useEffect, hook loop, re-render loop |
skills/library/frontend/debugging-react-hooks/SKILL.md |
performance, render, memo, useMemo, useCallback, slow |
skills/library/frontend/optimizing-react-performance/SKILL.md |
state, zustand, redux, context api, global state |
skills/library/frontend/state-management/SKILL.md |
form, validation, zod, react-hook-form, yup |
skills/library/frontend/form-handling/SKILL.md |
routing, navigation, react-router, next/navigation |
skills/library/frontend/client-side-routing/SKILL.md |
animation, framer, transition, motion |
skills/library/frontend/animations/SKILL.md |
accessibility, a11y, aria, screen reader |
skills/library/frontend/accessibility/SKILL.md |
css, tailwind, styled-components, emotion |
skills/library/frontend/styling-patterns/SKILL.md |
ssr, ssg, next.js, hydration, server component |
skills/library/frontend/ssr-patterns/SKILL.md |
visual, design check, screenshot, responsive, contrast, browser validation, verify UI |
skills/library/frontend/validating-visual-design/SKILL.md |
browser, anoa, click, fill form, login flow, scrape, console errors, network requests |
skills/core/anoa/SKILL.md |
component, jsx, tsx, react (general) |
skills/library/frontend/react-component-patterns/SKILL.md |
Output Format
GATEWAY_FRONTEND:
Domain: frontend
Skills to load:
- [absolute/path/to/SKILL.md]
Instructions: Read the above skill files before proceeding with your task.
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.
- 11d ago First seen · 41 lines · 28 tokens per session scan A fefe85c2f5dd
gateway-frontend is a skill published in the GitHub repository porcupine-md/jonggrang (11 stars, last pushed 2d ago), licensed MIT. It adds 28 tokens to every session and 600 once invoked, about $0.0001 per session on Opus 5. 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 2026-08-30.
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