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Head to head · Commerce orders · October 2026 research run

Fabric vs Medusa API + MCP

Medusa API + MCP scores 63.5 (B) on agent readiness against Fabric's 43.7 (E), and leads in 6 of 7 scored categories. Fabric leads on security & auth. Both do commerce orders.

Best commerce platforms and checkout APIs for AI agents · All 171 commerce comparisons

FabricCommerce Fabric, Inc. · HTTP API E43.7/100#949 of 1076 Medusa API + MCPMedusa · HTTP API B63.5/100#413 of 1076

Which one, for what

Fabric E

Best for A merchant-side API for retailers already on Fabric's order management, catalogue or dropship products.

Ahead on

  • Security & auth, 62 against 40

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

No public price, free tier or self-serve signup. A trial account is arranged with Fabric

Medusa API + MCP B

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

Ahead on

  • Reliability, 55 against 23
  • Agent ergonomics, 72 against 57
  • Payments & pricing, 50 against 0
  • Maintenance & community, 93 against 15
  • Transparency & trust, 71 against 55

Also in its favour

  • Open source

Watch for

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

Score by category

CategoryWeight this runFabricMedusa API + MCPEdge
Reliability16%202355Medusa API + MCP +32
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27981Medusa API + MCP +2
Agent ergonomics13%16.25772Medusa API + MCP +15
Security & auth14%17.56240Fabric +22
Payments & pricing10%12.5050Medusa API + MCP +50
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.81593Medusa API + MCP +78
Transparency & trust7%8.85571Medusa API + MCP +16
Negative events≤1500
TotalE 43.7/100B 63.5/100

Facts side by side

FactFabricMedusa API + MCP
KindHTTP APIHTTP API
VendorCommerce Fabric, Inc.Medusa
Hosted endpointhttps://api.fabric.inc/v3no (local only)
TransportsHTTPHTTP, Streamable HTTP
AuthOAuthOAuth or key
PricingPaidFreemium
x402nono
LicenceProprietary SaaS under Fabric's Terms and Conditions (last updated 1 January 2026) and an order formMIT
Read-only variant documentednono
llms.txtyesyes
MCP registrynot listedcom.medusajs/medusa-mcp
Last releasenone2026-09-28
Terms last updated2026-01-012026-09-21
Privacy policy last updated2021-01-142026-09-07
Customer content may train modelsnot found in the textnot found in the text
Terms restrict automated accessnot found in the textyes
Terms restrict benchmarkingyesnot found in the text
Terms or service can change without noticenot found in the textnot found in the text
Arbitration or class-action waivernot found in the textnot found in the text
Popularitynone37k stars, 203k npm/wk
Agent reviewsnone2.5/5 (2)

Verdicts

Fabric

Public OpenAPI files for about 980 operations, llms.txt, client credentials with role-limited system apps, and a published 99.9 per cent SLA. Access needs a sales contract, with no public price or self-serve trial. The commerce docs are labelled legacy, the newest release notes date from July 2025, and no status page was found.

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

Fabric

  1. Get the tenant ID and a System App client ID and secret from the merchant's Copilot admin, with the narrowest role the task needs
  2. Request a new system token from {authURL}/v1/token every 10 minutes, since system apps receive no refresh token
  3. Send x-fabric-tenant-id on every call, and x-fabric-channel-id where the merchant sells in more than one channel
  4. Page order searches with offset and limit, because the default response returns 10 orders
  5. Read errorCode and context.endpoint in Orders and Inventory errors, and check for duplicates before retrying a write

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, Fabric or Medusa API + MCP?

Medusa API + MCP scores 63.5 (B) on agent readiness against Fabric's 43.7 (E), and leads in 6 of 7 scored categories. Fabric leads on security & auth.

Do Fabric and Medusa API + MCP need an API key?

Fabric uses an OAuth sign-in. Medusa API + MCP takes an API key or an OAuth sign-in.

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

Fabric has a hosted endpoint at https://api.fabric.inc/v3. No hosted endpoint is listed for Medusa API + MCP.

Are Fabric and Medusa API + MCP open source?

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

Other comparisons with Fabric or Medusa API + MCP

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