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 OrcaQubits/agentic-commerce-skills-plugins --skill shopify-checkout-uigit clone --depth 1 https://github.com/OrcaQubits/agentic-commerce-skills-pluginsWrote 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/orcaqubits/agentic-commerce-skills-plugins/shopify-checkout-ui)<a href="https://agentmods.dev/skills/orcaqubits/agentic-commerce-skills-plugins/shopify-checkout-ui"><img src="https://agentmods.dev/badge/skills/orcaqubits/agentic-commerce-skills-plugins/shopify-checkout-ui/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/orcaqubits/agentic-commerce-skills-plugins/shopify-checkout-ui"><img src="https://agentmods.dev/badge/skills/orcaqubits/agentic-commerce-skills-plugins/shopify-checkout-ui.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 | $0.00049 | $0.01222 |
| Opus 5.5 | $0.00020 | $0.00489 |
| Sonnet 5.5 | $0.00010 | $0.00244 |
| Haiku 4.5 | $0.00005 | $0.00122 |
Grade A, and why
shopify-checkout-ui 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 1mo 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 — 162 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Shopify Checkout UI Extensions
Before writing code
Fetch live docs:
- Fetch
https://shopify.dev/docs/apps/build/checkoutfor checkout extensions - Web-search
site:shopify.dev checkout ui extension targetsfor available targets - Web-search
site:shopify.dev checkout ui componentsfor UI primitives
What Are Checkout UI Extensions
Client-side extensions that add UI to Shopify's checkout:
- Render at specific extension targets (locations in checkout flow)
- Use Shopify's UI primitives (not Polaris, not HTML)
- Built with Preact and Remote DOM — sandboxed rendering
- Access checkout state via APIs (no direct DOM access)
Important: You cannot replace Shopify's checkout — only extend it at designated points.
Extension Targets
Locations where extensions can render:
Checkout Page
purchase.checkout.block.render— general block in checkoutpurchase.checkout.header.render-after— after checkout headerpurchase.checkout.footer.render-after— after checkout footerpurchase.checkout.contact.render-after— after contact infopurchase.checkout.shipping-option-list.render-after— after shipping optionspurchase.checkout.payment-method-list.render-after— after payment methodspurchase.checkout.actions.render-before— before pay button
Thank You Page
purchase.thank-you.block.render— block on thank-you page
Order Status Page
customer-account.order-status.block.render— block on order status
Post-Purchase
purchase.post-purchase.render— full-page post-purchase upsellpurchase.post-purchase.should-render— decide whether to show post-purchase
UI Primitives
Checkout extensions use Shopify's UI components (NOT Polaris, NOT HTML):
| Component | Purpose |
|---|---|
Banner |
Information/warning/error messages |
BlockStack |
Vertical layout |
Button |
Action buttons |
Checkbox |
Boolean input |
ChoiceList |
Radio/checkbox groups |
Divider |
Visual separator |
Form |
Form container |
Heading |
Section headings |
Icon |
Icons |
Image |
Images |
InlineStack |
Horizontal layout |
Link |
Navigation links |
Select |
Dropdown selection |
Text |
Text content |
TextBlock |
Block of text |
TextField |
Text input |
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.
- 1mo ago First seen · 162 lines · 49 tokens per session scan A 4821f458655c
shopify-checkout-ui is a skill published in the GitHub repository OrcaQubits/agentic-commerce-skills-plugins (40 stars, last pushed 1mo ago), licensed MIT. It adds 49 tokens to every session and 1,222 once invoked, about $0.0002 per session on Opus 5.5. 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 2026-09-15.
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