cloakcheck
Scan a page for hidden prompt-injection payloads targeting AI agents.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"cloakcheck": {
"url": "https://cloakcheck-wheat.vercel.app/api/mcp"
}
}
}Remote endpoints
https://cloakcheck-wheat.vercel.app/api/mcpstreamable-httpWhat it can do
Tool inventory
Tools (1)
🟢check_page_for_injection(url)
Scan 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).
Input Schema
{
"type": "object",
"properties": {
"url": {
"type": "string",
"description": "The full URL (http:// or https://) of the page to scan"
}
},
"required": [
"url"
]
}Community
Evidence