Koskamo

GuardBee Prompt Leak Scanner MCP

A security-focused MCP server component that detects leaked credentials and personally identifiable information (PII) such as API keys, credit cards, and national IDs within outbound LLM prompts. It functions as both an MCP scan tool and a live reverse proxy positioned in front of real LLM APIs to prevent data exfiltration.

Package and access

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

GuardBee Prompt Leak Scanner MCP logo, by GuardBeeCommunity listingLocal stdioSource reviewed; not executedPublished by GuardBee
Vendor documentation

What you can do with it

  • Catch leaked API keys in outbound LLM prompts
  • Detect PII like credit cards and national IDs in prompts
  • Act as a live reverse proxy for LLM API traffic

Source and maintenance

Community listingRegistry 0.1.6
mcp-registry: io.github.4hmetuyar/prompt-leak-scanner@0.1.6mcp-registry: io.github.GuardBee/prompt-leak-scanner@1.1.1Source repository
Maintenance checked

Packages and installation

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

@guardbee/mcp-prompt-leak-scanner 0.1.6

npm
@guardbee/mcp-prompt-leak-scanner package definition
{
  "version": "0.1.6",
  "transport": "stdio",
  "identifier": "@guardbee/mcp-prompt-leak-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-prompt-leak-scanner-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-prompt-leak-scanner@0.1.6"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "guardbee-prompt-leak-scanner-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-prompt-leak-scanner@0.1.6"
      ]
    }
  }
}

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-prompt-leak-scanner-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-prompt-leak-scanner@0.1.6"
      ]
    }
  }
}

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-prompt-leak-scanner-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-prompt-leak-scanner@0.1.6"
      ]
    }
  }
}

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