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mcp_so

Square Model Context Protocol Server (Beta)

A Model Context Protocol (MCP) server for square

→ square/square-mcp-server· listed on mcp_so
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// key findings
🚨
Known vulnerabilities in dependencies: 1 critical, 3 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
🔐
You'll be asked for 1 credential: ACCESS_TOKEN
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies1 critical3 high1 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

criticalform-data@4.0.0GHSA-fjxv-7rqg-78g4

form-data uses unsafe random function in form-data for choosing boundary

high@modelcontextprotocol/sdk@1.5.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.5.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

highform-data@4.0.0GHSA-hmw2-7cc7-3qxx

form-data: CRLF injection in form-data via unescaped multipart field names and filenames

lowyaml@2.7.0GHSA-48c2-rrv3-qjmp

yaml is vulnerable to Stack Overflow via deeply nested YAML collections

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// required environment variables
This server reads these from process.env. You'll be asked to provide them before it can run.
🔐 secretACCESS_TOKEN— YOUR_SQUARE_ACCESS_TOKEN SANDBOX=true npx square-mcp-server start
configDISALLOW_WRITES— Restrict to read-only operations DISALLOW_WRITES=true
configPRODUCTION— Use Square production environment PRODUCTION=true
configSANDBOX— ACCESS_TOKEN=YOUR_SQUARE_ACCESS_TOKEN =true npx square-mcp-server start
configSQUARE_VERSION— Specify Square API version SQUARE_VERSION=2025-04-16
// full audit trail
The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.
// improvement guidance — verified publishers only
We have 4 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
[![M8ven Score](https://m8ven.ai/badge/mcp/square-square-mcp-server-1lqp72)](https://m8ven.ai/mcp/square-square-mcp-server-1lqp72)
commit: 9aeafc9cd2d9ff70b626123a12849a741ea3a162
code hash: b917ccc0a7053932cb2739c4ed64231efb5df85832fbe9c8276bb2b0da5a5600
verified: 6/16/2026, 1:06:10 PM
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