Koskamo

@guardbee/mcp-tool-poisoning-scanner

A security scanner for Model Context Protocol (MCP) servers that detects tool poisoning attacks and confused-deputy vulnerabilities. It analyzes tool definitions to identify hidden instructions in descriptions and mismatches where read-only tools have dangerous handlers like shell execution or file writes.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

@guardbee/mcp-tool-poisoning-scanner logo, by GuardBeeCommunity listingLocal stdioSource reviewed; not executedPublished by GuardBee
Vendor documentation

What you can do with it

  • Scan MCP tool definitions for hidden instructions
  • Detect confused-deputy mismatches in tool handlers
  • Identify shell or eval sinks in read-only tools

Source and maintenance

Community listingRegistry 0.2.1
mcp-registry: io.github.4hmetuyar/tool-poisoning-scanner@0.2.1mcp-registry: io.github.GuardBee/tool-poisoning-scanner@0.5.1Source repository
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

@guardbee/mcp-tool-poisoning-scanner 0.2.1

npm
@guardbee/mcp-tool-poisoning-scanner package definition
{
  "version": "0.2.1",
  "transport": "stdio",
  "identifier": "@guardbee/mcp-tool-poisoning-scanner",
  "registryType": "npm"
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "guardbee-mcp-tool-poisoning-scanner": {
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-tool-poisoning-scanner@0.2.1"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "guardbee-mcp-tool-poisoning-scanner": {
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-tool-poisoning-scanner@0.2.1"
      ]
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "guardbee-mcp-tool-poisoning-scanner": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-tool-poisoning-scanner@0.2.1"
      ]
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "guardbee-mcp-tool-poisoning-scanner": {
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-tool-poisoning-scanner@0.2.1"
      ]
    }
  }
}

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