Square MCP

Name: Square MCP Review
Item: Square MCP
Rating: 3.1
Author: Aaron Matthews

Connector Data & Analytics Usable

Works inClaude Code Claude Cowork Claude Chat

Usable Reviewed

Vendor-official Square MCP (beta) for payment processing, catalog management, and merchant operations. Connects Claude to Square's commerce platform.

Vendor-official Square MCP server (beta). Payment processing, catalog management, and merchant operations from Claude.

Manage product catalogs and inventory from your editor
Query transaction records and payment history directly
Test payment workflows during application development

106 starsApache-2.0 (commercial OK)FreeNo code needed

Usable rating — This tool is functional but has notable gaps. Review the evaluation notes below before deploying.

Why it matters

Vendor-official Square MCP (beta) for payment processing, catalog management, and merchant operations. Connects Claude to Square's commerce platform.

Best for

Developers building on Square's APIs who want Claude to manage product catalogs, query transactions, and test payment flows.

Works in

Claude Code Claude Cowork Claude Chat

Source

https://github.com/square/square-mcp-server

How to Get It

Option 1: Claude Desktop AppOpen the Customize panel in the sidebar → browse connectors → search and add. Works in Claude Code, Claude Cowork, and Claude Chat.

Option 2: Paste into Claude CodeCopy the command below and paste it into a Claude Code conversation. Claude will run it for you.

Command

claude mcp add square -- npx mcp-remote https://mcp.squareup.com/sse

Tip: Paste this into a Claude Code conversation. Verify command matches your Claude Code version.

First thing to try

Once it’s connected, paste this into Claude:

Help me manage product catalogs and inventory from my editor

PrerequisitesSquare account (remote hosted server authenticates via OAuth); for the local server, a Square access token set as ACCESS_TOKEN — sandbox mode available via SANDBOX=trueCostFree

Trust Signals Reviewed

Stars106Contributors4Last updated2026-04-09LicenseApache-2.0 (OK for commercial use)Known CVEsNone foundSources: GitHub Advisory Database + OSV.dev · Scanned 2026-08-16 · scanner v1

Data & Access

Data processingPrompts sent to Anthropic API. Enterprise/Team plans exclude training.

Community Pulse Growing

Discussed on Reddit

Calculator MCP – A Model Context Protocol server that provides basic calculator — Reddit · 3 pts
Square MCP Server – A server that enables interaction with Square's API via Goos — Reddit · 2 pts
MCP Server for Ticketmaster Events – Provides tools for discovering events at Ma — Reddit · 2 pts

3 mentions across 1 sources

Reviewer notes

Reviewed review. These are observations, not a security certification.

Vendor-official beta. 50 stars. Payment + catalog + merchant operations.

Vendor-official MCP server. Hosted by the vendor. Connectors are account-scoped (JJ Englert finding).

Things to check

Beta status means API contracts and capabilities may shift. Requires valid Square API credentials and OAuth setup, which adds operational overhead for multi-tenant deployments.

How to evaluate tools before deploying →

Data shown here comes from public APIs and automated scanning. Reviewer notes reflect one person's experience. This is not a security certification or legal recommendation. Always evaluate tools according to your own organization's policies.

Evaluation Scores

Evaluation

Ease of Use

3/5

Versatility

2/5

Reliability

4/5

Security

4/5

Overall score3.15 / 5.00 UsableEvaluatedApr 2026

Vendor-official beta. 50 stars. Payment + catalog + merchant operations.

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