SmuggleCheck
by smugglecheck.mike-tusa.workers.dev · dev.workers.mike-tusa.smugglecheck/smugglecheck
Find hidden prompt-injection text: ASCII smuggling, zero-width/emoji stego, bidi, homoglyphs.
- Category
- AI and agents
- Connection
- Remote (HTTP)
- Tools
- 2 reported
- Status
- Online
Connect it to your AI
Claude Code
claude mcp add --transport http smugglecheck https://smugglecheck.mike-tusa.workers.dev/mcpClaude, ChatGPT, Cursor and other apps
Add it as a custom connector with this URL (Streamable HTTP):
https://smugglecheck.mike-tusa.workers.dev/mcpThis server expects extra headers, usually an API key from its maker.
Cursor, VS Code and other apps (mcp.json)
{
"mcpServers": {
"smugglecheck": {
"url": "https://smugglecheck.mike-tusa.workers.dev/mcp"
}
}
}Tools it offers
2 tools, as the server itself reported during our check on Oct 31, 2026.
scan_textScan 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. bicompare_stringsCompare 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 return
Questions
What is the SmuggleCheck MCP server?
Find hidden prompt-injection text: ASCII smuggling, zero-width/emoji stego, bidi, homoglyphs. It is made by smugglecheck.mike-tusa.workers.dev and listed in the official MCP Registry as dev.workers.mike-tusa.smugglecheck/smugglecheck. MCP (Model Context Protocol) is the open standard that lets AI apps like Claude, ChatGPT and Cursor use outside tools.
How do I add SmuggleCheck to Claude?
In the Claude app or claude.ai, open Settings, then Connectors, choose "Add custom connector" and paste https://smugglecheck.mike-tusa.workers.dev/mcp. In Claude Code, run: claude mcp add --transport http smugglecheck https://smugglecheck.mike-tusa.workers.dev/mcp
How do I add SmuggleCheck to ChatGPT?
ChatGPT can use remote MCP servers as connectors. In ChatGPT settings, under Apps and Connectors, turn on developer mode if asked, create a new connector and paste https://smugglecheck.mike-tusa.workers.dev/mcp.
How do I add SmuggleCheck to Cursor?
Open Cursor settings, go to MCP, choose "Add new MCP server" (or edit ~/.cursor/mcp.json) and add: { "mcpServers": { "smugglecheck": { "url": "https://smugglecheck.mike-tusa.workers.dev/mcp" } } }
Does SmuggleCheck work right now?
Yes. It responded when we last checked on 31 Oct 2026. We check remote MCP servers every day.
What can SmuggleCheck do?
It gives your AI 2 tools, including scan_text, compare_strings. The full list is on this page.
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Markdown (GitHub README)
[](https://chen.media/mcp/dev-workers-mike-tusa-smugglecheck-smugglecheck)HTML (switches to dark mode on its own)
<a href="https://chen.media/mcp/dev-workers-mike-tusa-smugglecheck-smugglecheck"><picture><source media="(prefers-color-scheme: dark)" srcset="https://chen.media/mcp/badge/dev-workers-mike-tusa-smugglecheck-smugglecheck.svg?theme=dark"><img src="https://chen.media/mcp/badge/dev-workers-mike-tusa-smugglecheck-smugglecheck.svg" alt="Listed on chen.media/mcp" height="40"></picture></a>More in AI and agents
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