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 pwa-storefrontgit 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/pwa-storefront)<a href="https://agentmods.dev/skills/finsilabs/awesome-ecommerce-skills/pwa-storefront"><img src="https://agentmods.dev/badge/skills/finsilabs/awesome-ecommerce-skills/pwa-storefront/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/pwa-storefront"><img src="https://agentmods.dev/badge/skills/finsilabs/awesome-ecommerce-skills/pwa-storefront.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 | $0.00030 | $0.03401 |
| Opus 5 | $0.00015 | $0.01700 |
| Sonnet 5 | $0.00006 | $0.00680 |
| Haiku 4.5 | $0.00003 | $0.00340 |
Grade A, and why
pwa-storefront 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 12d 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 — 382 lines — stays where its author put it; the contents beside it link to each section on GitHub.
PWA Storefront
Overview
A Progressive Web App (PWA) storefront combines the reach of the web with native-app-like capabilities: offline catalog browsing, push notifications, home screen installation, and fast repeat loads from cache. Service workers intercept network requests and implement caching strategies that keep the store functional on flaky connections. This skill covers implementing a service worker with Workbox, creating a Web App Manifest, caching product catalogs, and sending push notifications for order updates.
When to Use This Skill
- When your customers are in regions with unreliable mobile internet connectivity
- When you want to enable "Add to Home Screen" for higher re-engagement rates without a native app
- When repeat page loads should be instant by serving assets from cache
- When you want to send push notifications for order status updates, back-in-stock alerts, or promotions
- When building a mobile-first storefront that needs to compete with native apps in UX quality
Prerequisites & Platform Notes
This skill is written for custom/headless storefronts (Node.js, Python, or similar backend). The code examples use TypeScript/Node.js and can be adapted to any stack.
Shopify: Shopify Hydrogen is Shopify's headless framework. MACH/composable patterns apply when using Shopify as the commerce backend with a custom frontend, or when mixing Shopify with other best-of-breed services. WooCommerce: WooCommerce can serve as a headless backend via its REST API and WPGraphQL. These patterns apply when decoupling the frontend from WordPress. Magento: Magento's GraphQL API and PWA Studio support headless architectures. These composable patterns apply to Magento as a backend service in a MACH stack.
You'll need:
- Node.js 18+ (or adapt to your backend language)
- PostgreSQL (or your preferred relational database)
- Redis for caching/queues
- An email sending service (SendGrid, AWS SES, or Postmark)
- CDN (Cloudflare, CloudFront, or Fastly)
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/push-notifications-and-offline-ux/criteria.json 3.3 KB
- evals/push-notifications-and-offline-ux/task.md 2.1 KB
- evals/service-worker-caching-strategies/criteria.json 3.0 KB
- evals/service-worker-caching-strategies/task.md 1.8 KB
- evals/web-app-manifest-and-installability/criteria.json 2.5 KB
- evals/web-app-manifest-and-installability/task.md 1.6 KB
- tile.json 219 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.
- 12d ago First seen · 382 lines · 30 tokens per session scan A 04111573b668
pwa-storefront is a skill published in the GitHub repository finsilabs/awesome-ecommerce-skills (52 stars, last pushed 6mo ago), licensed MIT. It adds 30 tokens to every session and 3,401 once invoked, about $0.0002 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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