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mcp/harbor
Gemini CLI

tool poisoning scanner for Gemini CLI

io.github.guardbee/tool-poisoning-scanner

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

client:Gemini CLI transport:stdio runtime:npm

Install tool poisoning scanner in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json 

{
  "mcpServers": {
    "tool-poisoning-scanner": {
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-tool-poisoning-scanner"
      ]
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs

tool poisoning scanner in other clients

tool poisoning scanner MCP server