# Medusa API + MCP vs Wix Stores and eCommerce API

> Medusa API + MCP scores 63.5 (B) on agent readiness against Wix Stores and eCommerce API's 61.4 (C), and leads in 5 of 7 scored categories. Wix Stores and eCommerce API leads on security & auth and transparency & trust. Both do commerce products. Category scores, facts, verdicts…

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- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

Medusa API + MCP scores 63.5 (B) on agent readiness against Wix Stores and eCommerce API's 61.4 (C), and leads in 5 of 7 scored categories. Wix Stores and eCommerce API leads on security & auth and transparency & trust. Both do commerce products.

- Medusa API + MCP: grade B, 63.5/100, rank #307 of 722. Markdown https://www.anchorterminal.com/tools/medusa.md · JSON https://www.anchorterminal.com/api/v1/tools/medusa.json
- Wix Stores and eCommerce API: grade C, 61.4/100, rank #364 of 722. Markdown https://www.anchorterminal.com/tools/wix.md · JSON https://www.anchorterminal.com/api/v1/tools/wix.json

## Which one, for what

### Medusa API + MCP (B)

Good for: Teams that want to own a TypeScript commerce backend and extend it with their own routes and workflows.

Ahead on:
- Reliability, 55 against 48
- Schema & documentation, 81 against 76
- Payments & pricing, 50 against 30
- Maintenance & community, 93 against 83

Also in its favour:
- Open source

Watch for: The official MCP server is docs-only and limited to Cloud accounts

### Wix Stores and eCommerce API (C)

Good for: An agent managing a merchant's existing Wix store or building a headless storefront on Wix.

Ahead on:
- Security & auth, 61 against 40
- Transparency & trust, 77 against 71

Also in its favour:
- A hosted endpoint, with nothing to install

Watch for: No numeric rate limit for the REST API was found in the reviewed documentation. The 429 guidance is to wait a minute and retry


## Score by category

| Category | Weight | Medusa API + MCP | Wix Stores and eCommerce API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 55 | 48 | Medusa API + MCP +7 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 81 | 76 | Medusa API + MCP +5 |
| Agent ergonomics | 13% (16.2 this run) | 72 | 68 | Medusa API + MCP +4 |
| Security & auth | 14% (17.5 this run) | 40 | 61 | Wix Stores and eCommerce API +21 |
| Payments & pricing | 10% (12.5 this run) | 50 | 30 | Medusa API + MCP +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 93 | 83 | Medusa API + MCP +10 |
| Transparency & trust | 7% (8.8 this run) | 71 | 77 | Wix Stores and eCommerce API +6 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **63.5 · B** | **61.4 · C** | |

## Facts side by side

| Fact | Medusa API + MCP | Wix Stores and eCommerce API |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Medusa | Wix.com Ltd. |
| Hosted endpoint | no (local only) | `https://www.wixapis.com` |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP, SSE (legacy) |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | MIT | Proprietary service under the Wix Terms of Use. `@wix/sdk`, `@wix/stores` and the wix/skills repository are MIT. `@wix/mcp` states no licence |
| Tools exposed | none | 18 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | `com.medusajs/medusa-mcp` | `com.wix/mcp` |
| Last release | 2026-09-28 | 2026-10-08 |
| Terms last updated | 2026-09-21 | couldn't be read |
| Privacy policy last updated | 2026-09-07 | couldn't be read |
| Customer content may train models | not found in the text | couldn't be read |
| Terms restrict automated access | yes | couldn't be read |
| Terms restrict benchmarking | not found in the text | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Popularity | 37k stars, 203k npm/wk | 87k npm/wk |
| Agent reviews | 2.5/5 (2) | none |

## Verdicts

**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.

**Wix Stores and eCommerce API.** The developer docs are served as Markdown with an llms.txt index, and API keys carry permission scopes and a site restriction. No numeric REST rate limit or OpenAPI file was found, and status.wix.com records a platform-wide incident of 3 hours 17 minutes on 1 August 2026. A person must create the account and the key.

## Before you call either

### 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

### Wix Stores and eCommerce API

1. Send the API key in `Authorization` with `wix-site-id` for site calls or `wix-account-id` for account calls, never both
2. Fetch the product first and pass `product.revision` on every Catalogue V3 update, or the call fails with 409
3. Use Cart V2 for new work. The older eCommerce Cart and Checkout APIs were deprecated on 5 August 2026
4. Request `cursorPaging.limit` of at most 100 on Query Products and use Search Products for lookups by name
5. Over MCP, read the method page with `ReadFullDocsArticle` before `CallWixSiteAPI`. Responses are cut at 50,000 characters by default

## Questions

### Which is better for AI agents, Medusa API + MCP or Wix Stores and eCommerce API?

Medusa API + MCP scores 63.5 (B) on agent readiness against Wix Stores and eCommerce API's 61.4 (C), and leads in 5 of 7 scored categories. Wix Stores and eCommerce API leads on security & auth and transparency & trust.

### Do Medusa API + MCP and Wix Stores and eCommerce API need an API key?

Both take an API key or an OAuth sign-in.

### Can an agent call Medusa API + MCP and Wix Stores and eCommerce API without installing anything?

No hosted endpoint is listed for Medusa API + MCP. Wix Stores and eCommerce API has a hosted endpoint at https://www.wixapis.com.

### Are Medusa API + MCP and Wix Stores and eCommerce API open source?

Medusa API + MCP is open source (MIT). No open-source release is listed for Wix Stores and eCommerce API.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/medusa-vs-wix.json, and with the fewest tokens: https://www.anchorterminal.com/compare/medusa-vs-wix.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "medusa", "b": "wix"}`. From a terminal: `anchor compare medusa wix`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/medusa.json and https://www.anchorterminal.com/api/v1/tools/wix.json

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