What are reliable alternatives to SmuggleCheck?

Measured by Faceabot as working: Prompt Injection Scanner, cloakcheck, agentglass.

How do I connect an AI agent to SmuggleCheck?

Use the MCP streamable HTTP endpoint https://smugglecheck.mike-tusa.workers.dev/mcp.

Catalog › dev.workers.mike-tusa.smugglecheck/smugglecheck

Is SmuggleCheck reliable?

Reliable (measured) Yes. Faceabot measured SmuggleCheck 3 times: 100% of checks succeeded, including the last 3 in a row (last check 2026-10-19 21:50 UTC). It also does the job: its real read-only task worked 3 of 3 times.

Last check: 2026-10-19 21:50 UTC · answered in 9091 ms · remote (no install)

En français : Fiable (mesuré). Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

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

Source: official MCP registry (registry.modelcontextprotocol.io) · version 0.1.2 · publisher website

Connect your agent

{
  "mcpServers": {
    "smugglecheck": {
      "url": "https://smugglecheck.mike-tusa.workers.dev/mcp"
    }
  }
}

Or ask Faceabot first: MCP tool check_reliability {"id":"dev.workers.mike-tusa.smugglecheck/smugglecheck"} on https://faceabot.com/api/mcp.

Does it actually do the job?

Does the job (tested) — Faceabot asked scan_text to do a small read-only task 3 time(s): 3 returned a real result, the last 3 in a row. Last result: ok in 2934 ms.

Sample input: {"text":"hello world"}. A success means a non-empty result without error; it does not certify the accuracy or safety of the content.

Other proven tools for the same job

Prompt Injection Scanner Reliable (measured) · 100%
Check text before your agent reads it: hidden instructions, invisible text and links that leak data. · https://injectionscan.openkrill.app/mcp

cloakcheck Reliable (measured) · 100%
Scan a page for hidden prompt-injection payloads targeting AI agents. · https://cloakcheck-wheat.vercel.app/api/mcp

agentglass Reliable (measured) · 100%
Scan any public URL for hidden instructions aimed at AI agents (prompt injection). Free, no auth. · https://agentglass.net/mcp

Picked from Faceabot's live measurements. Or let Faceabot choose: GET https://faceabot.com/resolve?need=…

Faceabot measurements

When	Answers	Real task	Latency
2026-10-19 21:50 UTC	✅ ok	✅ done	9091 ms
2026-10-19 09:25 UTC	✅ ok	✅ done	8858 ms
2026-10-18 16:30 UTC	✅ ok	✅ done	7319 ms

Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

Find tools similar to SmuggleCheck →

Publisher of SmuggleCheck?

Show your measured reliability on your README or website:

[![Measured by Faceabot](https://faceabot.com/badge/dev.workers.mike-tusa.smugglecheck/smugglecheck.svg)](https://faceabot.com/tools/dev.workers.mike-tusa.smugglecheck/smugglecheck)

Data in JSON: /api/catalog?id=dev.workers.mike-tusa.smugglecheck/smugglecheck · Stop probes: POST /api/reliability/opt-out

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

Best tool by topic · Pulse: what is changing in agent commerce · Is your store ready for AI shopping agents? · State of MCP (weekly) · MCP server doctor · Reliability data · Faceabot app · Faceabot → AI assistants · What AI agents cannot find yet · Add Faceabot to your AI · Badge for tool publishers · Help · Privacy · Terms