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 commerce-js-integrationgit 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/commerce-js-integration)<a href="https://agentmods.dev/skills/finsilabs/awesome-ecommerce-skills/commerce-js-integration"><img src="https://agentmods.dev/badge/skills/finsilabs/awesome-ecommerce-skills/commerce-js-integration/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/commerce-js-integration"><img src="https://agentmods.dev/badge/skills/finsilabs/awesome-ecommerce-skills/commerce-js-integration.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 | $0.02947 |
| Opus 5 | $0.00015 | $0.01473 |
| Sonnet 5 | $0.00006 | $0.00589 |
| Haiku 4.5 | $0.00003 | $0.00295 |
Grade A, and why
commerce-js-integration 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.
How it starts
The opening of the file, as written. The whole thing — 344 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Commerce.js Integration
Overview
Commerce.js (Chec) is a headless commerce platform offering a JavaScript SDK that wraps its REST API for managing products, carts, checkouts, and orders. It is designed for developers who want to add commerce functionality to any website or JavaScript framework without the complexity of a full e-commerce platform. The SDK handles product fetching, cart lifecycle, checkout token creation, and order capture in a straightforward, promise-based API.
When to Use This Skill
- When you want to add e-commerce to a static site or simple React/Vue/Svelte project quickly
- When you don't need a complex backend and want a managed commerce API without server-side code
- When building a portfolio project, MVP, or proof-of-concept headless store
- When your catalog is small (under 1,000 products) and you don't need custom fulfillment logic
- When you want a simple SDK without managing a full Shopify or commercetools environment
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)
- Stripe account and API keys
- An email sending service (SendGrid, AWS SES, or Postmark)
Core Instructions
-
Install the SDK and initialize the client
npm install @chec/commerce.js
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/cart-management-with-react-context-and-v/criteria.json 2.5 KB
- evals/cart-management-with-react-context-and-v/task.md 3.0 KB
- evals/checkout-flow-with-token-generation-and-/criteria.json 2.8 KB
- evals/checkout-flow-with-token-generation-and-/task.md 2.2 KB
- evals/product-catalog-rendering-with-safe-html/criteria.json 2.6 KB
- evals/product-catalog-rendering-with-safe-html/task.md 1.7 KB
- tile.json 234 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.
- 11d ago First seen · 344 lines · 29 tokens per session scan A 069621ce2afc
commerce-js-integration 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 2,947 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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