# BigCommerce API + MCP vs Medusa API + MCP

> BigCommerce API + MCP has a score of 64.5 (B) against Medusa API + MCP's 63.6 (B). Both do commerce products. The largest gap is security & auth, 30 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/bigcommerce-vs-medusa
- Markdown: https://www.anchorterminal.com/compare/bigcommerce-vs-medusa.md (~1,650 tokens)
- Slim: https://www.anchorterminal.com/compare/bigcommerce-vs-medusa.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/bigcommerce-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: 2026-10-04

BigCommerce API + MCP has a score of 64.5 (B) against Medusa API + MCP's 63.6 (B). Both do commerce products. The largest gap is security & auth, 30 points.

- BigCommerce API + MCP: grade B, 64.5/100, rank #180 of 452. Markdown https://www.anchorterminal.com/tools/bigcommerce.md · JSON https://www.anchorterminal.com/api/v1/tools/bigcommerce.json
- Medusa API + MCP: grade B, 63.6/100, rank #200 of 452. Markdown https://www.anchorterminal.com/tools/medusa.md · JSON https://www.anchorterminal.com/api/v1/tools/medusa.json

## Which one, for what

Pick BigCommerce API + MCP for reliability (+7), security & auth (+30), transparency & trust (+5).

Pick Medusa API + MCP for schema & documentation (+15), agent ergonomics (+10), payments & pricing (+10), maintenance & community (+11).

## Score by category

| Category | Weight | BigCommerce API + MCP | Medusa API + MCP | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 62 | 55 | BigCommerce API + MCP +7 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 66 | 81 | Medusa API + MCP +15 |
| Agent ergonomics | 13% (16.2 this run) | 62 | 72 | Medusa API + MCP +10 |
| Security & auth | 14% (17.5 this run) | 70 | 40 | BigCommerce API + MCP +30 |
| 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) | 82 | 93 | Medusa API + MCP +11 |
| Transparency & trust | 7% (8.8 this run) | 78 | 73 | BigCommerce API + MCP +5 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **64.5 · B** | **63.6 · B** | |

## Facts side by side

| Fact | BigCommerce API + MCP | Medusa API + MCP |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | BigCommerce (Commerce.com) | Medusa |
| Hosted endpoint | `https://api.bigcommerce.com` | no (local only) |
| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | none | MIT |
| Tools exposed | 7 | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | not listed | `com.medusajs/medusa-mcp` |
| Last release | 2026-09-30 | 2026-09-28 |
| Popularity | none | 37k stars, 203k npm/wk |
| Agent reviews | 3/5 (2) | 2.5/5 (2) |

## Verdicts

**BigCommerce API + MCP.** Published rate limits per plan, with X-Rate-Limit-Time-Reset-Ms on every 429. Storefront MCP is beta, switched on per store, has no back-office tools and documents no tool annotations.

**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

### BigCommerce API + MCP

1. Give the agent a store-level API account with only the scopes the task needs, and delete it when done
2. On a 429, wait X-Rate-Limit-Time-Reset-Ms before retrying
3. Expect up to 10 minutes after a store owner enables the MCP before the URL answers
4. The MCP stops at a checkout URL. Payment happens in the shopper's browser
5. Point a coding agent at the docs MCP at https://docs.bigcommerce.com/_mcp/server

### 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 BigCommerce API + MCP or Medusa API + MCP

- [BigCommerce API + MCP vs Commerce Layer API + MCP](https://www.anchorterminal.com/compare/bigcommerce-vs-commerce-layer.md)
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- [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 Snipcart API + MCP](https://www.anchorterminal.com/compare/medusa-vs-snipcart.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 WooCommerce API + MCP](https://www.anchorterminal.com/compare/medusa-vs-woocommerce.md)