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SmuggleCheck

dev.workers.mike-tusa.smugglecheck/smugglecheck · v0.1.2

Find hidden prompt-injection text: ASCII smuggling, zero-width/emoji stego, bidi, homoglyphs.

Connect Remote server

Terminal
claude mcp add --transport http smugglecheck https://smugglecheck.mike-tusa.workers.dev/mcp --header "Authorization: Bearer <YOUR_API_KEY>"
~/.cursor/mcp.json
{
  "mcpServers": {
    "smugglecheck": {
      "url": "https://smugglecheck.mike-tusa.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "smugglecheck": {
      "type": "http",
      "url": "https://smugglecheck.mike-tusa.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://smugglecheck.mike-tusa.workers.dev/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 2 found in our last check

  • scan_text

    Scan untrusted text for prompt-injection smuggling and deceptive Unicode before it reaches a model or a reader. Detects Unicode tag characters ("ASCII smuggling", decodes the hidden text), zero-width characters (incl. binary stego decode), variation-selector stego ("emoji smuggl…

  • compare_strings

    Compare two strings (usernames, domains, brand or command names) with Unicode UTS #39 skeletons and say whether they can look the same to a reader: identical, confusable, confusable_ignoring_case or distinct. Also returns each string's scripts, whether it mixes scripts, and its…

Headers

NameDescription
Authorization
Optional, secret
Optional. 'Bearer sc_live_…' free key (POST /api/keys, no sign-up) for a monthly quota of your own. Works without a key.

Details

Endpointhttps://smugglecheck.mike-tusa.workers.dev/mcp (Streamable HTTP)
First published18 Oct 2026
Last updated18 Oct 2026
Registry namedev.workers.mike-tusa.smugglecheck/smugglecheck

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