Koskamo

GuardBee MCP Security Proxy

An open-source MCP gateway that sits between agents and tools to mask PII, block prompt injection, and maintain audit logs. It supports MCP 2026-07-28 and 2025-11-25 revisions, runs locally without accounts, and includes scanners for OWASP MCP Top 10 compliance.

Package and access

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

GuardBee MCP Security Proxy logo, by GuardBeeCommunity listingLocal stdioSource reviewed; not executedPublished by GuardBee
Vendor documentation

What you can do with it

  • Mask personal data and secrets in agent communications
  • Block prompt injection and toxic data flows
  • Scan codebases against OWASP MCP Top 10
  • Maintain tamper-evident audit logs for agent actions

Source and maintenance

Community listingRegistry 1.4.0
mcp-registry: io.github.4hmetuyar/security-proxy@1.4.0mcp-registry: io.github.GuardBee/security-proxy@1.36.0Source repository
Maintenance checked

Packages and installation

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

@guardbee/mcp-security-proxy 1.4.0

npm
@guardbee/mcp-security-proxy package definition
{
  "version": "1.4.0",
  "transport": "stdio",
  "identifier": "@guardbee/mcp-security-proxy",
  "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-security-proxy": {
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-security-proxy@1.4.0"
      ]
    }
  }
}

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-security-proxy": {
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-security-proxy@1.4.0"
      ]
    }
  }
}

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-security-proxy": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-security-proxy@1.4.0"
      ]
    }
  }
}

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-security-proxy": {
      "command": "npx",
      "args": [
        "-y",
        "@guardbee/mcp-security-proxy@1.4.0"
      ]
    }
  }
}

Let your agent find its tools

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