Payments and finance - official Square (Block) server
Square MCP server
MCP server that bridges AI assistants to the Square REST API, covering customers, orders, catalog, payments, invoices and other Square services through a discover-then-call tool pattern. Available as a hosted remote server with OAuth or as a local npm package using an access token. Square (Block) hosts it at https://mcp.squareup.com/mcp, or you can run square-mcp-server (npm) locally with OAuth or API key auth.
Last verified 3 tools4 sources
Install
Cursor
About Cursornpx mcp-remote https://mcp.squareup.com/mcpGeneric
{
"mcpServers": {
"mcp_square_api": {
"command": "npx",
"args": ["mcp-remote", "https://mcp.squareup.com/mcp"]
}
}
}Tools
get_service_info- Discover methods available for a service.
get_type_info- Get detailed parameter requirements.
make_api_request- Execute API calls to Square.
As documented on October 17, 2026. A running server reports its current list through tools/list.
Notes and caveats
- Square labels the server Beta.
- The remote server (recommended) uses OAuth with granular scopes and only accesses production resources; use the local server with SANDBOX=true for Sandbox testing.
- Legacy SSE endpoint https://mcp.squareup.com/sse is still served.
- Square maintains an allowlist of MCP clients for the remote server; request additions in the Square developer forum.
- Local server needs ACCESS_TOKEN and supports DISALLOW_WRITES=true for read-only.
- The Cursor snippet is the command entered with Type set to Command.
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FAQ
What does the Square MCP server do?
MCP server that bridges AI assistants to the Square REST API, covering customers, orders, catalog, payments, invoices and other Square services through a discover-then-call tool pattern. Available as a hosted remote server with OAuth or as a local npm package using an access token. The vendor documents 3 tools, including get_service_info, get_type_info and make_api_request.
How do I add the Square MCP server to Cursor?
Run npx mcp-remote https://mcp.squareup.com/mcp, copied from Square (Block)'s docs. This page also has snippets for Generic.
Does the Square MCP server need authentication?
Yes, OAuth or API key. Transport: Streamable HTTP, SSE, stdio. Status: Beta, last checked October 17, 2026.
Sources
Last verified against 4 Square (Block) pages, then re-checked independently.
- developer.squareup.comhttps://developer.squareup.com/docs/mcp
- github.comhttps://github.com/square/square-mcp-server
- npmjs.comhttps://www.npmjs.com/package/square-mcp-server
- registry.npmjs.orghttps://registry.npmjs.org/square-mcp-server
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