Square
Search and manage transaction, merchant, and payment data
About Square
Square is a commerce platform for transactions, merchants, customers, inventory, payments, and sales reporting. Its connector gives assistants business-operations context for payment data, point-of-sale workflows, financial reports, and customer profiles.
Connection details
https://mcp.squareup.com/sse- Transport
- SSE (Server-Sent Events)
- Authentication
- OAuth
Setup
claude mcp add square --transport sse https://mcp.squareup.com/sseFrequently asked questions
What is the Square remote MCP server?
The Square remote MCP server is a hosted Model Context Protocol endpoint at https://mcp.squareup.com/sse, so AI assistants can connect to it without installing or running anything locally. Square is a commerce platform for transactions, merchants, customers, inventory, payments, and sales reporting. Its connector gives assistants business-operations context for payment data, point-of-sale workflows, financial reports, and customer profiles.
How do I connect to the Square MCP server?
Add the endpoint https://mcp.squareup.com/sse to any MCP-compatible client such as Claude Code, Codex, Cursor, or VS Code. The setup snippets on this page configure each client in one step.
Does the Square MCP server require authentication?
Yes. Square uses OAuth: the first time you connect, your MCP client opens a browser window to sign in and authorize access, then reuses the credentials for future sessions.
Which transport does the Square MCP server use?
Square exposes an SSE (Server-Sent Events) endpoint. Most MCP clients still support SSE, although Streamable HTTP is the newer standard transport.
