Open-source BigCommerce MCP alternatives
The BigCommerce server is open source: a maintained community project you can read, audit, and fork, even though it only grounds an agent in BigCommerce's API docs rather than touching store data. The reason to look further is usually that you want a server that operates a real store or processes payments, not one that documents an API.
Every option below publishes its code. Most are store or payments runtimes you can audit before granting access; several install locally so you can keep the process on your own machine.
The 8 best open-source alternatives
- SaleorOfficial
Saleor's official server is open source and reads real store data: products, orders, customers, channels, and stock, though read-only. You can confirm from the repo exactly what it can see before connecting it.
Set up Saleor → - WooCommerceOfficial
WooCommerce's official integration is open source and queries and manages products and orders in a store. It runs locally, so a WordPress shop can audit the connector and keep the process on its own server.
Set up WooCommerce → Open source and built for billing, the official Stripe server creates customers, payment links, and invoices and reads balances. Read the repo before pointing it at live billing, then reach for it when payments are the job, not catalog.
Set up Stripe →Processor-side and published, the official Razorpay server creates orders and payment links, captures and refunds payments, and reads settlements and payouts. A payments runtime you can inspect before wiring into checkout.
Set up Razorpay →Merchant-of-record with public code, the official Polar server manages products, subscriptions, orders, customers, and revenue metrics. The auditable pick for digital and subscription commerce.
Set up Polar →Open source and broad, the official Square server reaches the full Square API: payments, catalog, orders, customers, bookings, and inventory. The widest commerce runtime here, with code you can read before connecting.
Set up Square →Built on the Paddle Billing API with published source, the official Paddle server manages the product catalog, billing, subscriptions, and reports. Audit the repo before handing it your billing for software sales.
Set up Paddle →Terminal-aware and inspectable, the official Adyen server creates payment sessions and links, refunds and cancels payments, and manages merchant accounts, terminals, and webhooks. Inspect the code before connecting it to real terminals.
Set up Adyen →
How to choose
Every option here is open source, so all of them can be audited before you connect them. For operating a real store you can read end to end, Saleor, WooCommerce, and Square are the strongest, with Square the broadest. Stripe, Razorpay, Polar, Paddle, and Adyen cover payments and billing. Unlike BigCommerce, these touch live commerce data, so read the repo before granting access.
FAQ
- Is the BigCommerce MCP server open source?
- Yes. It is a maintained community server with public code you can read, audit, and fork, though it grounds an agent in BigCommerce's API docs rather than touching store data. Every alternative on this page is open source too.
- Which open-source alternative actually operates a store?
- Square reaches the broadest commerce surface, including catalog, orders, and payments, and its code is public. Saleor reads store data read-only, and WooCommerce queries and manages products and orders. All three can be audited before you grant access, unlike a closed vendor server.