medusajs/medusa: The world's most flexible commerce platform for agents and developers

The world's most flexible commerce platform for agents and developers - medusajs/medusa

Summary

Medusa is an open-source TypeScript commerce platform for building B2B and DTC stores, marketplaces, distributor platforms, point-of-sale systems, and other commerce applications. It supplies reusable primitives—including products, carts, orders, pricing, and payments—along with a customization framework for extending core behavior.

The repository is a Yarn workspaces monorepo containing the main Medusa package, framework runtime, commerce and infrastructure modules, provider integrations, admin dashboard, CLI tools, plugins, and integration tests.

What it is useful for

Medusa is useful when an engineering team needs standard commerce functionality but needs to control how the application behaves. For example, a team building a distributor portal could use the product, cart, order, pricing, and payment modules without rebuilding each domain from scratch.

The main @medusajs/medusa package provides Store and Admin API routes, CLI commands, subscribers, and jobs. Separate packages contain the Workflows SDK, Modules SDK, query and orchestration tooling, and predefined workflows. This gives engineers several supported extension points rather than requiring every customization to be built directly inside an application.

The module and provider packages cover common infrastructure concerns. Documented providers include Stripe for payments, S3 for file storage, SendGrid for notifications, and Redis for locking and caching. There are also authentication providers for email/password, GitHub, Google, and OIDC.

This structure is particularly relevant for teams working across both backend and admin interfaces: the repository includes the Medusa Admin dashboard, its SDK, a Vite plugin and bundler, and a React-based design system.

How engineers can use it

The quickest documented starting point is Medusa Cloud, a managed environment with automated deployments, scaling, and maintenance. For a local application, the README specifies Node.js v22.22.0 or later and a running PostgreSQL database. Create an application with:

npx create-medusa-app@latest my-medusa-store

That command sets up the Medusa server and admin dashboard, and can optionally include a Next.js Starter Storefront. The installation documentation also covers additional options and Docker-based setup.

Engineers working directly with the repository can find published packages under packages, with core libraries under packages/core, commerce and infrastructure modules under packages/modules, and provider implementations under packages/modules/providers. The integration-tests directory contains HTTP and module test suites that run against a real PostgreSQL database; the README does not provide a test command, so contributors should consult the contribution documentation for exact execution steps.

There is one licensing boundary to account for: the core is MIT-licensed, while RBAC-based Enterprise Edition materials require a commercial agreement with MedusaJS, Inc. Upgrades should be tracked through the repository’s release notes.