tool poisoning scanner for Claude Code

io.github.guardbee/tool-poisoning-scanner

Scans MCP tool definitions for hidden instructions and confused-deputy sinks

client:Claude Code transport:stdio runtime:npm

Install tool poisoning scanner in Claude Code

run in your project directory

claude mcp add tool-poisoning-scanner -- npx -y @guardbee/mcp-tool-poisoning-scanner

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs