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Square

Square

Official

Process payments and manage orders, catalog, inventory, and bookings on Square — official MCP.

Score 71(?)SquareApache-2.0101Verified Top MCPs for Commerce & Payments →
InstallView on GitHub

Quick answer

What it does

Proxies the full Square API to MCP clients via three tools (service discovery, type introspection, and API execution), covering payments, orders, catalog, customers, inventory, invoices, and bookings.

Best for

  • Reading Square payments and orders
  • Catalog and inventory management
  • Invoice and booking workflows
  • Point-of-sale reporting

Not for

  • SaaS subscription billing (use Stripe/Paddle)
  • Teams wanting a minimal fixed tool set

Setup recipe

Pick your client, then follow the three steps.

  1. 1

    Install

    claude_desktop_config.json
    {
  "mcpServers": {
    "square": {
      "command": "npx",
      "args": [
        "square-mcp-server",
        "start"
      ]
    }
  }
}

    Paste under mcpServers. Fully quit and reopen Claude after editing.

    CLI or .mcp.json
    claude mcp add square -- npx square-mcp-server start

    Run from your repo. Commit .mcp.json to share with your team.

    .cursor/mcp.json
    {
  "mcpServers": {
    "square": {
      "command": "npx",
      "args": [
        "square-mcp-server",
        "start"
      ]
    }
  }
}

    Global path: ~/.cursor/mcp.json. Reload window after editing.

    .vscode/mcp.json
    {
  "servers": {
    "square": {
      "command": "npx",
      "args": [
        "square-mcp-server",
        "start"
      ]
    }
  }
}

    VS Code uses the "servers" key (not "mcpServers").

    ~/.codeium/windsurf/mcp_config.json
    {
  "mcpServers": {
    "square": {
      "command": "npx",
      "args": [
        "square-mcp-server",
        "start"
      ]
    }
  }
}

    Open via Cascade → hammer icon → Configure.

    cline_mcp_settings.json
    {
  "mcpServers": {
    "square": {
      "command": "npx",
      "args": [
        "square-mcp-server",
        "start"
      ]
    }
  }
}

    Open via the Cline sidebar → MCP Servers → Edit.

    ~/.continue/config.json
    {
  "experimental": {
    "modelContextProtocolServers": [
      {
        "transport": {
          "type": "stdio",
          "command": "npx",
          "args": [
            "square-mcp-server",
            "start"
          ]
        }
      }
    ]
  }
}

    Continue uses modelContextProtocolServers with a transport block.

    ~/.codex/config.toml
    # ~/.codex/config.toml
[mcp_servers.square]
command = "npx"
args = [
  "square-mcp-server",
  "start",
]

    Codex uses TOML. Each server is a [mcp_servers.<name>] subtable.

    ~/.config/zed/settings.json
    {
  "context_servers": {
    "square": {
      "command": {
        "path": "npx",
        "args": [
          "square-mcp-server",
          "start"
        ]
      }
    }
  }
}

    Zed calls them "context_servers". Settings live-reload on save.

    ChatGPT → Settings → Connectors (remote URL)
    {
  "name": "Square",
  "transport": "http",
  "url": "https://mcp.squareup.com/sse"
}

    Paste this into Settings → Connectors → Add custom connector. Requires ChatGPT Pro / Team / Enterprise / Edu with Developer mode enabled. ChatGPT supports remote HTTPS MCP servers only — stdio servers must be hosted on a public HTTPS endpoint first.

  2. 2

    Set required secrets

    No credentials required — this MCP runs over stdio without authentication.

  3. 3

    Try a minimum working prompt

    Minimum working prompt pending verification. Try any prompt from the MCP’s README once installed.

Tools & permissions

Tools list pending verification. The server exposes tools over MCP; we haven’t yet parsed its capability manifest into this page. Check the GitHub repo for the authoritative list.

Agent prompt pack

— copy into Claude, Cursor, or ChatGPT.
Paste into Claude, Cursor, or ChatGPT. Edit the [brackets] before sending.
Recommend the best MCP servers for [task: e.g. commerce & payments work] in [client: Claude].

Constraints:
- Prefer tools that are [official | open-source | read-only] — pick what matters for my use case.
- Exclude MCPs that require [e.g. a paid plan, OAuth-only flows, remote-only transport].
- Return at most 3 picks, ranked.

For each pick include:
1. One-sentence rationale.
2. The ready-to-paste install snippet for my client.
3. Any required secrets I need to create before installing.

Cross-check the top-mcps.com listing: https://top-mcps.com/top-mcps-for-commerce-payments
Compare Square against a real alternative. Swap the second MCP in [brackets] if you want a different match.
Compare Square MCP vs [Stripe MCP] for the following job: [describe the job, e.g. "let an agent create GitHub issues on bug triage"].

Judge them on:
- Setup time and complexity (what a new user hits first).
- Auth model (none / API key / OAuth 2.1) and credential risk.
- Transport (stdio / Streamable HTTP / SSE) and where the server runs.
- Required secrets and the blast radius if they leak.
- Operational risk in an unattended agent loop.
- Which one is "good enough" for a weekend prototype vs. production.

End with one sentence: which should I pick for my scenario, which is: [my scenario].

References:
- https://top-mcps.com/mcp/square
- top-mcps.com listing for Stripe
Asks the agent to install and verify. Works inside Claude Code, Cursor Agent, Codex CLI.
Install the Square MCP server for my [client: Claude] at the default config path for that client.

Use the exact install snippet published at https://top-mcps.com/mcp/square (fetch https://top-mcps.com/mcp/square.json for the canonical server.json if you can read URLs).

Before finishing:
1. Create the required secrets (no secrets) and put them in the appropriate env block — do not hard-code them.
2. Restart or reload the client so it picks up the new server.
3. Verify the server is connected (green / running state) and at least one tool is listed.
4. If anything fails, read the client's MCP logs and report the exact error — do not silently retry.

Confirm when done and list the tools the server now exposes.

Frequently asked questions

What changed

— 2 updates tracked.

  1. Refreshed install snippets and fact sheet; verified for 2026.

  2. Initial directory listing.

More Commerce & Payments MCPs

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Compared with Square

Side-by-side breakdowns for the choices people most often weigh against this MCP.

SquarevsStripeSquarevsPayPalSquarevsShopifySquarevsPaddle

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