MCP Ecommerce
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Payments

Square MCP Server

Square's beta MCP server bridges AI assistants to the full Square API (customers, orders, catalog items, payments). Square recommends the hosted server with OAuth; a local server can target Sandbox.

What it does

  • Query customers, orders and catalog items
  • Create and update Square records
  • Run against Sandbox locally for safe testing
  • A flag makes the local server read-only

Best for

Omnichannel retailers using Square POS plus online checkout.

Watch out for

The remote server only touches production data, writes are on by default locally and Square keeps an allowlist of MCP clients.

Other servers to compare

Varies by tool

Stripe MCP Server

Stripe · Payments

Stripe's remote MCP server lets an assistant work with Stripe objects such as customers, products, invoices and payment links.

View details →

Read and write

PayPal MCP Server

PayPal · Payments

PayPal offers both a local npm package and hosted remote servers (production and sandbox) that let merchants run invoicing, payments and other PayPal tasks from an AI client using natural language.

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Read and write

Mollie MCP Server

Mollie · Payments

Mollie's hosted MCP server proxies its public API so AI tools can list and manage payments, payment links, customers, subscriptions, settlements, invoices, terminals and webhooks after an OAuth sign-in.

View details →