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Double Check

io.github.mgleonard-ops/double-check

This is a specialized tool for flagging potential scams in messages and images, with a focus on common US fraud patterns. It analyzes text from emails, SMS messages, and screenshots to identify phishing attempts, impersonation scams, and other suspicious content. You'd reach for this when building customer support tools, email clients, or messaging apps where you want to warn users about potential fraud before they click links or share personal information. The server runs as a hosted service over streamable HTTP, so you don't need to manage any local detection models or maintain fraud pattern databases yourself.

tool
1
transport
HTTP
last updated
May 23, 2026

Install

From registry metadata
$ npx add-mcp https://web-production-970ba.up.railway.app/mcp --name double-check

Run in your terminal. add-mcp asks which agents to add it to (Claude Code, Codex, Cursor and more). Add -g to install it for every project.

Review the command, arguments and environment values before installing. MCP servers run with your local permissions.

Other ways

Claude Code

$ claude mcp add --transport http double-check https://web-production-970ba.up.railway.app/mcp

Run in your terminal. Add --scope user to make it available in every project.

Tools

Verified live · 1 tools

Verified live against the running server on Nov 6, 2026.

checkCheck whether a message, URL, email, or piece of text is a scam. Returns a verdict (safe/scam/action/ignore), a plain-English summary, recommended next steps, and a confidence level.2 params

Check whether a message, URL, email, or piece of text is a scam. Returns a verdict (safe/scam/action/ignore), a plain-English summary, recommended next steps, and a confidence level.

Parameters* required
content*string
The message text, URL, or email content to analyze. Max 5000 characters.
input_typestring
Whether the content is plain text or a URL. Defaults to 'text'.one of text · link

Sponsors

Details

Transport
HTTP
Registry
MCP registry, active
Tools verified
Nov 6, 2026