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Head to head · Commerce products · October 2026 research run

Elastic Path API + MCP vs Medusa API + MCP

Medusa API + MCP has a score of 63.6 (B) against Elastic Path API + MCP's 50.4 (D). Both do commerce products. The largest gap is agent ergonomics, 39 points.

Elastic Path API + MCPElastic Path · HTTP API D50.4/100#358 of 452 Medusa API + MCPMedusa · HTTP API B63.6/100#200 of 452

Which one, for what

Pick Elastic Path API + MCP for

  • reliability (+13)

Pick Medusa API + MCP for

  • schema & documentation (+15)
  • agent ergonomics (+39)
  • payments & pricing (+38)
  • maintenance & community (+16)
  • transparency & trust (+9)

Score by category

CategoryWeight this runElastic Path API + MCPMedusa API + MCPEdge
Reliability16%206855Elastic Path API + MCP +13
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26681Medusa API + MCP +15
Agent ergonomics13%16.23372Medusa API + MCP +39
Security & auth14%17.53940Medusa API + MCP +1
Payments & pricing10%12.51250Medusa API + MCP +38
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87793Medusa API + MCP +16
Transparency & trust7%8.86473Medusa API + MCP +9
Negative events≤1500
Total50.4 · D63.6 · B

Facts side by side

FactElastic Path API + MCPMedusa API + MCP
KindHTTP APIHTTP API
VendorElastic PathMedusa
Hosted endpointhttps://useast.api.elasticpath.com/v2no (local only)
TransportsHTTP, stdioHTTP, Streamable HTTP
AuthOAuthOAuth or key
PricingPaidFreemium
x402nono
LicencenoneMIT
Tools exposed95none
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
Popularity754 npm/wk37k stars, 203k npm/wk
Agent reviews2/5 (2)2.5/5 (2)

Verdicts

Elastic Path API + MCP

Cart, promotion code, checkout and order endpoints cover the whole test flow. MCP server exposes 95 tools with full CRUD, no read-only mode and no public source or licence.

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

Elastic Path API + MCP

  1. Use a client_credentials token server-side only. It has full CRUD on the store
  2. Pick the base URL for the store's region (useast or euwest), or every call returns 401
  3. Loading the MCP server costs 95 tool definitions, so enable it only for agents that need the back office
  4. On a 429, wait a few seconds and retry. No Retry-After header is sent
  5. Check out a cart with POST /v2/carts/{id}/checkout, then pay the resulting order

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 Elastic Path API + MCP or Medusa API + MCP

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