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 finsilabs/awesome-ecommerce-skills --skill mega-menu-buildergit clone --depth 1 https://github.com/finsilabs/awesome-ecommerce-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/finsilabs/awesome-ecommerce-skills/mega-menu-builder)<a href="https://agentmods.dev/skills/finsilabs/awesome-ecommerce-skills/mega-menu-builder"><img src="https://agentmods.dev/badge/skills/finsilabs/awesome-ecommerce-skills/mega-menu-builder/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/finsilabs/awesome-ecommerce-skills/mega-menu-builder"><img src="https://agentmods.dev/badge/skills/finsilabs/awesome-ecommerce-skills/mega-menu-builder.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 | $0.00029 | $0.02603 |
| Opus 5 | $0.00015 | $0.01301 |
| Sonnet 5 | $0.00006 | $0.00521 |
| Haiku 4.5 | $0.00003 | $0.00260 |
Grade A, and why
mega-menu-builder 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 228 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mega Menu Builder
Overview
Build a horizontal navigation bar that expands into full-width panels containing category columns, featured product cards, and promotional banners. The mega menu is driven by content manageable in your platform's admin, supports keyboard navigation and screen readers, and degrades gracefully to a mobile hamburger drawer.
When to Use This Skill
- When a store has 3+ top-level categories, each with significant sub-categories
- When the navigation needs to surface promotional content (seasonal banners, featured products) alongside category links
- When rebuilding navigation as part of a storefront redesign
- When the current dropdown menu is not accessible to keyboard or screen reader users
- When navigation content needs to be managed by a merchandiser without code deploys
Core Instructions
Step 1: Determine the merchant's platform and choose the right approach
| Platform | Recommended Approach | Why |
|---|---|---|
| Shopify | Configure nested menus in Navigation admin + use an OS2.0 theme that supports mega menus (Impulse, Empire, Prestige) or install Meteor Mega Menu app | Shopify's Navigation admin supports 3-level menus; premium themes like Impulse include built-in mega menu sections with image and banner support |
| WooCommerce | Use Max Mega Menu plugin (free/pro) or WP Mega Menu with your existing WordPress theme | Max Mega Menu integrates with any WordPress theme, adds image widgets and custom content to any menu item, and works with Elementor and Gutenberg |
| BigCommerce | Use Header & Navigation section in the Theme Editor with a theme that supports mega menus (Cornerstone Advanced, Merchant); or install Shogun page builder which includes mega menu blocks | BigCommerce themes vary in mega menu support; Cornerstone Advanced has a built-in mega menu; Shogun adds it to any theme |
| Custom / Headless | Build a data-driven mega menu component with hover/focus open logic, keyboard navigation (arrow keys, Escape), and a mobile accordion drawer | Full control over content model, animations, and accessibility patterns; see implementation below |
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.
- evals/aria-roles-keyboard-navigation-and-hover/criteria.json 2.5 KB
- evals/aria-roles-keyboard-navigation-and-hover/task.md 2.2 KB
- evals/mega-panel-data-model-and-panel-content-/criteria.json 2.8 KB
- evals/mega-panel-data-model-and-panel-content-/task.md 3.5 KB
- evals/mobile-drawer-css-layout-and-focus-trap/criteria.json 2.7 KB
- evals/mobile-drawer-css-layout-and-focus-trap/task.md 2.8 KB
- tile.json 235 B
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.
- 8d ago First seen · 228 lines · 29 tokens per session scan A cc7d4c489cff
mega-menu-builder is a skill published in the GitHub repository finsilabs/awesome-ecommerce-skills (52 stars, last pushed 6mo ago), licensed MIT. It adds 29 tokens to every session and 2,603 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 2026-09-03.
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