PromptGuard MCP

An MCP server that scans prompts for injection attacks, redacts PII, and audits LLM SDK usage. It exposes tools for authentication, text scanning, project scanning, redaction, and status checks, supporting both stdio and Streamable HTTP transports for integration with various AI editors and agents.

Package and access

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

Vendor evidenceLocal stdioSource reviewed; not executedOperated by PromptGuard

Vendor documentation

What you can do with it

Scan prompts for injection attacks and PII
Redact sensitive data from text inputs
Audit LLM SDK usage and tool calls
Check server status and authentication

Source and maintenance

Vendor evidenceRegistry 1.1.2

mcp-registry: co.promptguard/security@1.1.2 Source repository

Maintenance checked: Oct 31, 2026, 10:27 PM UTC

Packages and installation

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

@promptguard/mcp-server 1.1.2

npm

@promptguard/mcp-server package definition

{
  "version": "1.1.2",
  "transport": "stdio",
  "identifier": "@promptguard/mcp-server",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "PROMPTGUARD_API_KEY",
      "format": "string",
      "description": "PromptGuard API key (starts with pg_live_)"
    }
  ]
}

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": {
    "promptguard-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@promptguard/mcp-server@1.1.2"
      ],
      "env": {
        "PROMPTGUARD_API_KEY": "<YOUR_PROMPTGUARD_API_KEY>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "promptguard-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@promptguard/mcp-server@1.1.2"
      ],
      "env": {
        "PROMPTGUARD_API_KEY": "<YOUR_PROMPTGUARD_API_KEY>"
      }
    }
  }
}

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": {
    "promptguard-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@promptguard/mcp-server@1.1.2"
      ],
      "env": {
        "PROMPTGUARD_API_KEY": "<YOUR_PROMPTGUARD_API_KEY>"
      }
    }
  }
}

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": {
    "promptguard-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@promptguard/mcp-server@1.1.2"
      ],
      "env": {
        "PROMPTGUARD_API_KEY": "<YOUR_PROMPTGUARD_API_KEY>"
      }
    }
  }
}

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