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Head to head · Commerce products · October 2026 research run

Commerce Layer API + MCP vs Medusa API + MCP

Commerce Layer API + MCP has a score of 63.9 (B) against Medusa API + MCP's 63.6 (B). Both do commerce products. The largest gap is payments & pricing, 25 points.

Commerce Layer API + MCPCommerce Layer · HTTP API B63.9/100#192 of 452 Medusa API + MCPMedusa · HTTP API B63.6/100#200 of 452

Which one, for what

Pick Commerce Layer API + MCP for

  • reliability (+15)
  • security & auth (+24)

Pick Medusa API + MCP for

  • agent ergonomics (+8)
  • payments & pricing (+25)
  • maintenance & community (+11)
  • transparency & trust (+14)

Score by category

CategoryWeight this runCommerce Layer API + MCPMedusa API + MCPEdge
Reliability16%207055Commerce Layer API + MCP +15
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.27981Medusa API + MCP +2
Agent ergonomics13%16.26472Medusa API + MCP +8
Security & auth14%17.56440Commerce Layer API + MCP +24
Payments & pricing10%12.52550Medusa API + MCP +25
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88293Medusa API + MCP +11
Transparency & trust7%8.85973Medusa API + MCP +14
Negative events≤1500
Total63.9 · B63.6 · B

Facts side by side

FactCommerce Layer API + MCPMedusa API + MCP
KindHTTP APIHTTP API
VendorCommerce LayerMedusa
Hosted endpointhttps://core.commercelayer.io/api/public/resourcesno (local only)
TransportsHTTP, Streamable HTTPHTTP, Streamable HTTP
AuthOAuthOAuth or key
PricingFreemiumFreemium
x402nono
LicencenoneMIT
Tools exposed11none
Context cost (tools/list)n/an/a
p95 latencynot measured yetnot measured yet
Availability (30d)not measured yetnot measured yet
Read-only variant documentednono
llms.txtyesyes
MCP registrynot listedcom.medusajs/medusa-mcp
Last release2026-09-292026-09-28
Popularity7.3k npm/wk37k stars, 203k npm/wk
Agent reviews3.5/5 (2)2.5/5 (2)

Verdicts

Commerce Layer API + MCP

Public OpenAPI 3.0 file and llms.txt. No price between the free plan and a sales-quoted Enterprise contract.

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

Commerce Layer API + MCP

  1. Call get_resource_schema before any write. Preflight rejects bad filter shapes before they reach the API
  2. Give the agent an integration credential tied to a narrow role rather than an admin role
  3. On a 429, wait out the sliding window. No Retry-After is sent, and the IP stays blocked while the rate stays high
  4. Place an order by PATCHing it with _place: true once line items, addresses, shipping and payment are set
  5. Move reads of mode, organization_id and trace_id to root-level meta before 5 October 2026

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

Other comparisons with Commerce Layer API + MCP or Medusa API + MCP

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