app.vercel.cloakcheck-wheat/cloakcheck
https://cloakcheck-wheat.vercel.app/api/mcp ↗
Description
Scan a page for hidden prompt-injection payloads targeting AI agents.
What our measurements say
app.vercel.cloakcheck-wheat/cloakcheck is a remote MCP server published at cloakcheck-wheat.vercel.app. It has been probed 6 times since 9/14/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 411 ms, placing it among the faster endpoints. It offers a narrow, focused set of 1 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool name clearly indicates purpose (checking pages for injection)
- No tool conflicts due to single function
Weaknesses
- No error handling documentation for invalid URLs or unreachable pages
- Parameter validation constraints (e.g. URL format requirements) not specified
check_page_for_injection— Missing error handling documentation for invalid inputcheck_page_for_injection— Parameter validation constraints (e.g. URL format) not specified
Verdict
Event narrative
Sign up free to generateRaw observations
| Run | Era | Modern | ms | Legacy |
|---|
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 138ms → warm 151ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
check_page_for_injectionScan a single web page for content planted to hijack an AI agent reading it -- invisible unicode (zero-width chars, the unicode 'tag' block used for steganographic prompt injection), CSS-hidden instruction text, and instruction-shaped language in alt/title/aria-label attributes a human would never read. Does NOT judge whether visible body text is safe -- only content hidden from normal human reading flow is flagged, so a page that legitimately discusses prompt injection won't false-positive on itself. Call this before an autonomous shopping/browsing agent acts on a page's content (add to cart, follow instructions found on the page, etc).
urlstringrequired
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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[](https://mcpmetrics.io/servers/app-vercel-cloakcheck-wheat-cloakcheck)<a href="https://mcpmetrics.io/servers/app-vercel-cloakcheck-wheat-cloakcheck"><img src="https://mcpmetrics.io/badge/app.vercel.cloakcheck-wheat/cloakcheck/era.svg" alt="mcpmetrics"></a>You are seeing the last 7 days. Sign up for the full history. Which check failed and why is in the dashboard.
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