medusa-expert

medusa-expert is an agent for Claude Code from OrcaQubits/agentic-commerce-skills-plugins. It costs 160 tokens per session (2,740 once invoked), scanned A, original, MIT.

An agent for developing Medusa v2 commerce applications with TypeScript, Node.js, and Next.js. It covers the platform's data models, workflows, APIs, admin dashboard, storefront, and payment and fulfillment integrations.

In plain words
What is it for?
Use it when building custom modules, workflows, API routes, event subscribers, scheduled jobs, admin extensions, Next.js storefronts, or commerce integrations.
Why use it?
It gives guidance across the parts of a Medusa project and requires checking current Medusa documentation before writing implementation code.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the medusa-commerce plugin — 19 skills, 1 agent shipped together

Good fit Use it when building custom modules, workflows, API routes, event subscribers, scheduled jobs, admin extensions, Next.js storefronts, or commerce integrations.

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Install with agentmods
npx agentmods add agents/orcaqubits/agentic-commerce-skills-plugins/medusa-expert
Install

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.

Clone the repo
git clone --depth 1 https://github.com/OrcaQubits/agentic-commerce-skills-plugins

Made for: Claude Code.

Or install medusa-commerce, the plugin that ships this one along with the rest of its 19 skills, 1 agent.

Wrote 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.

agentmods badge for medusa-expert

README.md
[![agentmods](https://agentmods.dev/badge/agents/orcaqubits/agentic-commerce-skills-plugins/medusa-expert/github.svg)](https://agentmods.dev/agents/orcaqubits/agentic-commerce-skills-plugins/medusa-expert)
Your own site
<a href="https://agentmods.dev/agents/orcaqubits/agentic-commerce-skills-plugins/medusa-expert"><img src="https://agentmods.dev/badge/agents/orcaqubits/agentic-commerce-skills-plugins/medusa-expert/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.

agentmods 80×15 button for medusa-expert

Your own site · 80×15
<a href="https://agentmods.dev/agents/orcaqubits/agentic-commerce-skills-plugins/medusa-expert"><img src="https://agentmods.dev/badge/agents/orcaqubits/agentic-commerce-skills-plugins/medusa-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 160 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,740 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00160 $0.02740
Opus 5 $0.00080 $0.01370
Sonnet 5 $0.00032 $0.00548
Haiku 4.5 $0.00016 $0.00274

Measured 2d ago against content hash 7a0a71d43cb5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-16, from the pricing page.

Security

Grade A, and why

medusa-expert 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.

medusa-commerce/agents/medusa-expert.md · 218 lines

How it starts

The opening of the file, as written. The whole thing — 218 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Medusa Expert — Commerce Platform + TypeScript/Node.js/Next.js

You are an expert Medusa v2 developer with deep knowledge of the platform architecture, custom modules, DML data models, workflow engine, API routes, subscribers, admin dashboard extensions, Next.js storefronts, payment and fulfillment providers, and the full commerce domain. You also have strong TypeScript, Node.js, and Next.js expertise since Medusa development heavily uses these technologies.

Live Documentation Rule

Before writing any Medusa implementation code, you MUST web-search and/or web-fetch the relevant official documentation. Medusa v2 is a rapidly evolving open-source platform — APIs change, DML syntax evolves, new module features are added, and v1 patterns are deprecated. Never rely solely on your training data for:

  • DML (Data Model Language) model definitions and relationship types
  • Workflow step APIs, compensation patterns, and hook signatures
  • API route conventions, middleware configuration, and validator schemas
  • Module service methods and container resolution patterns
  • Admin dashboard widget injection zones and UI route APIs
  • JS SDK client methods and Tanstack Query integration
  • CLI commands and flags (npx medusa, npx @medusajs/medusa-cli)
  • Commerce module APIs (cart, order, payment, fulfillment, pricing)
  • medusa-config.ts configuration options and module registration
  • MikroORM entity decorators and migration patterns

Official Sources

Resource URL Use For
Medusa Docs https://docs.medusajs.com/ Primary reference
Medusa v2 Docs https://docs.medusajs.com/learn Learning path and guides
Admin API Reference https://docs.medusajs.com/api/admin Admin REST API endpoints
Store API Reference https://docs.medusajs.com/api/store Storefront REST API endpoints
JS SDK Reference https://docs.medusajs.com/resources/references/js-sdk JavaScript SDK methods
Medusa GitHub https://github.com/medusajs/medusa Source code and examples
Next.js Starter https://github.com/medusajs/nextjs-starter-medusa Storefront template
CLI Reference https://docs.medusajs.com/resources/medusa-cli CLI commands
Modules Reference https://docs.medusajs.com/learn/fundamentals/modules Module architecture
Workflows Reference https://docs.medusajs.com/learn/fundamentals/workflows Workflow engine
Commerce Modules https://docs.medusajs.com/resources/commerce-modules Product, Order, Cart, etc.
Recipes https://docs.medusajs.com/resources/recipes Common patterns
Medusa UI (GitHub) https://github.com/medusajs/ui Admin UI component library
Medusa Blog https://medusajs.com/blog/ Announcements and tutorials
Discord Community https://discord.gg/medusajs Community support

Read the full file on GitHub · 218 lines

Changes

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.

  1. 2d ago First seen · 218 lines · 160 tokens per session scan A 7a0a71d43cb5

Subscribe to this mod's changes

medusa-expert is an agent published in the GitHub repository OrcaQubits/agentic-commerce-skills-plugins (39 stars, last pushed 2d ago), licensed MIT. It adds 160 tokens to every session and 2,740 once invoked, about $0.0008 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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