What is prompt injection in MCP tool definitions?

It's hiding malicious instructions in tool descriptions, tricking AI agents into leaking data or running bad code before they even use the tool.

How do I install and use asqav-mcp?

Pip install asqav-mcp, then run scan_tool_definition() for single tools or scan_all_tools() for everything. Runs locally, instant results.

Does asqav-mcp catch all AI tool threats?

It scans five key categories like unicode hides and typosquatting, but evolving attacks might slip through — scan regularly.

🔒 Security & Privacy

asqav-mcp's Scanner Spots Prompt Injection Hiding in AI Tool Definitions

Your AI agent might be exfiltrating data right now, thanks to sneaky instructions buried in tool descriptions. asqav-mcp just dropped a scanner to catch that crap before it calls the tool.

theAIcatchup Apr 08, 2026 3 min read

asqav-mcp scanning MCP tool definitions for prompt injection risks

⚡ Key Takeaways

MCP tool definitions are vulnerable to prompt injection, exfiltrating data via hidden instructions. 𝕏
asqav-mcp 0.3.2 scanner checks five threats locally with zero latency before agents call tools. 𝕏
Essential for devs building AI agents; echoes early web security scanners like OWASP tools. 𝕏

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theAIcatchup

Community-driven. Code-first.

#AI agents #MCP Tools #MCP servers #MCP servers #prompt injection #prompt injection #tool scanner

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Originally reported by Dev.to

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