Pangea MCP proxy

Protect any MCP server. Now with 99% less prompt injection! The Pangea MCP proxy secures any existing MCP stdio-based server with the Pangea AI Guard service, guarding tools' inputs and outputs.

What it does: Protect MCP servers from common threat vectors by running all MCP server I/O through Pangea AI Guard, which blocks:

• Prompt injections (yes, even the ones wrapped in a riddle)
• Malicious links, IPs, domains (via CrowdStrike, DomainTools, WhoisXML threat intel)
• 50 types of confidential information and PII
• 10 content filters, including toxicity, self harm, violence, and filtering by topic
• Support for 104 spoken languages

Bonus: It stores your AI Guard token safely in Pangea Vault, with automatic rotation.

Extra bonus: Each request to AI Guard and its detection results are logged to your Secure Audit Log, giving you an immutable trail of activity for audits, debugging, and incident response.

Prerequisites

• Node.js v22.15.0 or greater.
• A Pangea API token with access to AI Guard. This token needs to be stored in Pangea Vault. See Service Tokens for documentation on how to create and manage Pangea API tokens.
• A Pangea API token with access to Vault. This will be used to fetch the above token at runtime.

Usage

In an existing MCP servers configuration like the following:

{
  "mcpServers": {
    "qrcode": {
      "command": "npx",
      "args": ["-y", "@jwalsh/mcp-server-qrcode"]
    }
  }
}

Wrap the original command with npx -y @pangeacyber/mcp-proxy and add an environment variable:

{
  "mcpServers": {
    "qrcode": {
      "command": "npx",
      "args": [
        "-y",
        "@pangeacyber/mcp-proxy",
        "--",
        "npx",
        "-y",
        "@jwalsh/mcp-server-qrcode"
      ],
      "env": {
        "PANGEA_VAULT_TOKEN": "pts_00000000000000000000000000000000",
        "PANGEA_VAULT_ITEM_ID": "pvi_00000000000000000000000000000000"
      }
    }
  }
}

1. Update the PANGEA_VAULT_TOKEN value to the Pangea Vault API token.
2. Update the PANGEA_VAULT_ITEM_ID value to the Vault item ID that contains the Pangea AI Guard API token.