Medusa API + MCP vs WooCommerce API + MCP

Medusa API + MCP

MIT core you can self-host, with Medusa Cloud running the same APIs and no GMV fee. The official MCP server is docs-only and limited to Cloud accounts.

WooCommerce API + MCP

Free GPL software with no platform fee or revenue share. Uptime, speed and security depend on each store's host and plugins. No vendor status page.

Medusa API + MCP

1. Send x-publishable-api-key on every /store call. It decides which sales channels and products the agent sees
2. Ask for only the fields you need with fields. Store routes reject relations nested more than three deep since 2.20.0
3. Read the store's regions before creating a cart, since prices and shipping options depend on region
4. Place the order with POST /store/carts/{id}/complete after shipping and payment sessions are set
5. Read the release notes before upgrading a minor version. Breaking changes land there

WooCommerce API + MCP

1. Create a REST key with read permission only for reporting tasks, and send it in the Authorization header, never the URL
2. Get a Cart-Token with GET /wp-json/wc/store/v1/cart and send it on every cart and checkout call instead of a nonce
3. Add _fields=id,name,price to REST calls to cut response size
4. Page with per_page up to 100 and stop at X-WP-TotalPages
5. Product delete only trashes unless you pass force true, so check the trash before assuming it's gone