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Official · by square

Square MCP server

The Square MCP server enables AI assistants to work with Square's Connect API, including finding available methods and carrying out API calls.

  • Hosted (remote) · Runs locally
  • Apache-2.0 licence
  • ★ 108 on GitHub
  • Verified against its source 19 Oct 2026
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What the Square MCP server does

Assistants can call get_service_info to find the methods a Square service offers, and make_api_request to carry out calls against Square. Square runs a hosted remote endpoint at https://mcp.squareup.com/mcp that authenticates through OAuth, letting you log in with your Square account. You can also start a local instance via npx on your own computer, supplying your own access token.

Tools it gives your assistant

2 tools or toolsets, as its documentation lists them.

  • get_service_info Discover methods available for a service
  • make_api_request Execute API calls to Square

How to install it

Hosted server

Add this address to your assistant's MCP settings:

https://mcp.squareup.com/mcp

Run it locally

With Node.js (npx)

npx square-mcp-server start

What you need

In the square documentation's own words:

  • “The remote server is recommended: it uses OAuth, so you sign in with your Square account”
  • “Get up and running with the local server using npx. This runs the server on your own machine with your own access token”
  • “Replace YOUR_SQUARE_ACCESS_TOKEN with your actual Square access token”

Commands and settings change between versions. Check the official instructions before you install.