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 medusa-cart-checkoutgit 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/medusa-cart-checkout)<a href="https://agentmods.dev/skills/orcaqubits/agentic-commerce-skills-plugins/medusa-cart-checkout"><img src="https://agentmods.dev/badge/skills/orcaqubits/agentic-commerce-skills-plugins/medusa-cart-checkout/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/medusa-cart-checkout"><img src="https://agentmods.dev/badge/skills/orcaqubits/agentic-commerce-skills-plugins/medusa-cart-checkout.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 | $0.00042 | $0.01400 |
| Opus 5 | $0.00021 | $0.00700 |
| Sonnet 5 | $0.00008 | $0.00280 |
| Haiku 4.5 | $0.00004 | $0.00140 |
Grade A, and why
medusa-cart-checkout 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 2d 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 — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Medusa v2 Cart and Checkout
Before writing code
Fetch live docs:
- Web-search
site:docs.medusajs.com cart modulefor cart data model and service methods - Web-search
site:docs.medusajs.com checkout flowfor the end-to-end checkout process - Web-search
site:docs.medusajs.com sales channelfor sales channel scoping - Fetch
https://docs.medusajs.com/resources/references/cartand review theICartModuleServiceinterface - Web-search
medusajs v2 cart workflow 2026for latest cart-related workflow steps
Cart Lifecycle
Flow
Create Cart ──> Add Line Items ──> Set Address
──> Select Shipping ──> Init Payment ──> Complete
Cart States
| State | Description |
|---|---|
| Active | Cart is open, items can be added/removed |
| Completing | Checkout in progress, payment being processed |
| Completed | Cart converted to order, no further modifications |
Cart Data Model
| Entity | Key Fields |
|---|---|
| Cart | region_id, customer_id, sales_channel_id, email |
| LineItems[] | variant_id, quantity, unit_price, Adjustments[] |
| ShippingMethods[] | shipping_option_id, amount, data |
| Addresses | shipping_address, billing_address |
| PaymentCollection | PaymentSessions[] |
Module Architecture
| Link Target | Purpose |
|---|---|
| Product Module | Variant resolution |
| Region Module | Currency, tax rules |
| Sales Channel Module | Storefront scoping |
| Promotion Module | Discount application |
| Payment Module | Payment sessions |
| Fulfillment Module | Shipping methods |
Fetch live docs for cross-module link definitions and
remoteQueryusage for cart enrichment.
Checkout Steps
Step 1: Create Cart
// Skeleton: create cart in storefront
// Fetch live docs for createCartWorkflow input
const cart = await createCartWorkflow(container)
.run({ input: { region_id, sales_channel_id } })
// Fetch live docs for required vs optional fields
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.
- 2d ago First seen · 167 lines · 42 tokens per session scan A d6308786331d
medusa-cart-checkout is a skill published in the GitHub repository OrcaQubits/agentic-commerce-skills-plugins (39 stars, last pushed 2d ago), licensed MIT. It adds 42 tokens to every session and 1,400 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 2026-09-15.
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