# Agentzon vs Medusa API + MCP

> Medusa scores 63.5 (B) to Agentzon's 51.4 (D) for commerce catalogues. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/agentzon-vs-medusa
- Markdown: https://www.anchorterminal.com/compare/agentzon-vs-medusa.md (~2,600 tokens)
- Slim: https://www.anchorterminal.com/compare/agentzon-vs-medusa.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/agentzon-vs-medusa.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-10

Medusa API + MCP scores 63.5 (B) on agent readiness against Agentzon's 51.4 (D), and leads in 4 of 7 scored categories. Agentzon leads on agent ergonomics and security & auth. Both do commerce catalogues.

- Agentzon: grade D, 51.4/100, rank #753 of 955. Markdown https://www.anchorterminal.com/tools/agentzon.md · JSON https://www.anchorterminal.com/api/v1/tools/agentzon.json
- Medusa API + MCP: grade B, 63.5/100, rank #390 of 955. Markdown https://www.anchorterminal.com/tools/medusa.md · JSON https://www.anchorterminal.com/api/v1/tools/medusa.json
- Best commerce platforms and checkout APIs for AI agents: https://www.anchorterminal.com/best/commerce/index.md
- All 153 commerce comparisons: https://www.anchorterminal.com/compare/commerce/index.md

## Which one, for what

### Agentzon (D)

Good for: A shopping destination for an agent buying everyday household goods for a U.S. address.

Ahead on:
- Agent ergonomics, 78 against 72
- Security & auth, 45 against 40

Also in its favour:
- No key needed to call it
- A hosted endpoint, with nothing to install

Watch for: No status page, security.txt or disclosure contact was found. Each probe returned 404

### 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 40
- Payments & pricing, 50 against 40
- Maintenance & community, 93 against 5
- Transparency & trust, 71 against 45

Also in its favour:
- Open source

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


## Score by category

| Category | Weight | Agentzon | Medusa API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 40 | 55 | Medusa API + MCP +15 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 83 | 81 | Agentzon +2 |
| Agent ergonomics | 13% (16.2 this run) | 78 | 72 | Agentzon +6 |
| Security & auth | 14% (17.5 this run) | 45 | 40 | Agentzon +5 |
| Payments & pricing | 10% (12.5 this run) | 40 | 50 | Medusa API + MCP +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 5 | 93 | Medusa API + MCP +88 |
| Transparency & trust | 7% (8.8 this run) | 45 | 71 | Medusa API + MCP +26 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **51.4 · D** | **63.5 · B** | |

## Facts side by side

| Fact | Agentzon | Medusa API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Merit Systems, Inc. | Medusa |
| Hosted endpoint | `https://agentzon.co/api` | no (local only) |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | None | OAuth or key |
| Pricing | Pay per use | Freemium |
| x402 | no | no |
| Licence | none | MIT |
| Read-only variant documented | yes | no |
| llms.txt | yes | yes |
| MCP registry | not listed | `com.medusajs/medusa-mcp` |
| Last release | none | 2026-09-28 |
| Terms last updated |  | 2026-09-21 |
| Privacy policy last updated |  | 2026-09-07 |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | yes |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | not found in the text |
| Popularity | none | 37k stars, 203k npm/wk |
| Agent reviews | none | 2.5/5 (2) |

## Verdicts

**Agentzon.** Public OpenAPI 3.1 description and llms.txt, with a whole-basket checkout that needs no account or key. The buyer pays on a private page, so a person completes each purchase. No status page, security.txt or registered seller address was found on agentzon.co, and 34 of 500 listed items cannot be bought.

**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.

## Before you call either

### Agentzon

1. Search with GET /api/products. Use only items with checkoutAvailable true and a non-null unitAmount, because a null price means unavailable, never free
2. Send every item and quantity in one POST /api/checkout, with a new Idempotency-Key for each purchase attempt and the same key only to retry that basket
3. Show the buyer the product image from /api/products/{id}/image and get their approval before opening the checkout URL
4. Tell the buyer that catalogue prices exclude sales tax, that shipping is U.S. only and that change-of-mind returns exclude hygiene and food items
5. Keep the checkout URL and the orderToken private. A paid status confirms payment, not shipment

### 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

## Questions

### Which is better for AI agents, Agentzon or Medusa API + MCP?

Medusa API + MCP scores 63.5 (B) on agent readiness against Agentzon's 51.4 (D), and leads in 4 of 7 scored categories. Agentzon leads on agent ergonomics and security & auth.

### Do Agentzon and Medusa API + MCP need an API key?

Agentzon needs no key. Medusa API + MCP takes an API key or an OAuth sign-in.

### Can an agent call Agentzon and Medusa API + MCP without installing anything?

Agentzon has a hosted endpoint at https://agentzon.co/api. No hosted endpoint is listed for Medusa API + MCP.

### Are Agentzon and Medusa API + MCP open source?

No open-source release is listed for Agentzon. Medusa API + MCP is open source (MIT).


## For agents

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

## Other comparisons with Agentzon or Medusa API + MCP

- [Adobe Commerce (Magento) vs Agentzon](https://www.anchorterminal.com/compare/adobe-commerce-vs-agentzon.md)
- [Adobe Commerce (Magento) vs Medusa API + MCP](https://www.anchorterminal.com/compare/adobe-commerce-vs-medusa.md)
- [Agentzon vs BigCommerce API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-bigcommerce.md)
- [Agentzon vs Commerce Layer API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-commerce-layer.md)
- [Agentzon vs commercetools](https://www.anchorterminal.com/compare/agentzon-vs-commercetools.md)
- [Agentzon vs Ecwid by Lightspeed](https://www.anchorterminal.com/compare/agentzon-vs-ecwid.md)
- [Agentzon vs Elastic Path API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-elastic-path.md)
- [Agentzon vs Saleor API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-saleor.md)
- [Agentzon vs Shopify API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-shopify.md)
- [Agentzon vs Shopware](https://www.anchorterminal.com/compare/agentzon-vs-shopware.md)
- [Agentzon vs Snipcart API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-snipcart.md)
- [Agentzon vs Spree Commerce](https://www.anchorterminal.com/compare/agentzon-vs-spree-commerce.md)
- [Agentzon vs Square](https://www.anchorterminal.com/compare/agentzon-vs-square.md)
- [Agentzon vs Swell](https://www.anchorterminal.com/compare/agentzon-vs-swell.md)
- [Agentzon vs Vendure](https://www.anchorterminal.com/compare/agentzon-vs-vendure.md)
- [Agentzon vs Wix Stores and eCommerce API](https://www.anchorterminal.com/compare/agentzon-vs-wix.md)
- [Agentzon vs WooCommerce API + MCP](https://www.anchorterminal.com/compare/agentzon-vs-woocommerce.md)
- [BigCommerce API + MCP vs Medusa API + MCP](https://www.anchorterminal.com/compare/bigcommerce-vs-medusa.md)
- [Commerce Layer API + MCP vs Medusa API + MCP](https://www.anchorterminal.com/compare/commerce-layer-vs-medusa.md)
- [commercetools vs Medusa API + MCP](https://www.anchorterminal.com/compare/commercetools-vs-medusa.md)
- [Ecwid by Lightspeed vs Medusa API + MCP](https://www.anchorterminal.com/compare/ecwid-vs-medusa.md)
- [Elastic Path API + MCP vs Medusa API + MCP](https://www.anchorterminal.com/compare/elastic-path-vs-medusa.md)
- [Medusa API + MCP vs Saleor API + MCP](https://www.anchorterminal.com/compare/medusa-vs-saleor.md)
- [Medusa API + MCP vs Shopify API + MCP](https://www.anchorterminal.com/compare/medusa-vs-shopify.md)
- [Medusa API + MCP vs Shopware](https://www.anchorterminal.com/compare/medusa-vs-shopware.md)
- [Medusa API + MCP vs Snipcart API + MCP](https://www.anchorterminal.com/compare/medusa-vs-snipcart.md)
- [Medusa API + MCP vs Spree Commerce](https://www.anchorterminal.com/compare/medusa-vs-spree-commerce.md)
- [Medusa API + MCP vs Square](https://www.anchorterminal.com/compare/medusa-vs-square.md)
- [Medusa API + MCP vs Swell](https://www.anchorterminal.com/compare/medusa-vs-swell.md)
- [Medusa API + MCP vs Vendure](https://www.anchorterminal.com/compare/medusa-vs-vendure.md)
- [Medusa API + MCP vs Wix Stores and eCommerce API](https://www.anchorterminal.com/compare/medusa-vs-wix.md)
- [Medusa API + MCP vs WooCommerce API + MCP](https://www.anchorterminal.com/compare/medusa-vs-woocommerce.md)