Koskamo

prompt-protection MCP

An open-source npm package that inspects text before it reaches your model and inspects the model's response before it reaches your user. It runs in-process with zero runtime dependencies, normalizing input to detect prompt injection, jailbreaks, and data exfiltration. It also acts as a tool-call guard for JavaScript agents, ensuring tainted tool results never reach dangerous sinks like network, email, exec, file, or payment endpoints.

Package and access

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

prompt-protection MCP logo, by mughalhereCommunity listingLocal stdioSource reviewed; not executedPublished by mughalhere
Vendor documentation

What you can do with it

  • Scan prompts and tool definitions for injection attacks
  • Guard agent tool calls to prevent untrusted data reaching sinks
  • Detect leaked system prompts and exposed credentials in model output
  • Prevent indirect injection from documents or tool responses

Source and maintenance

Community listingRegistry 4.3.0
mcp-registry: io.github.mughalhere/prompt-protection@4.3.0Source repositoryProject website
Maintenance checked

Packages and installation

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

prompt-protection 4.3.0

npm
prompt-protection package definition
{
  "version": "4.3.0",
  "transport": "stdio",
  "identifier": "prompt-protection",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org"
}

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.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "prompt-protection-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "prompt-protection@4.3.0"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "prompt-protection-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "prompt-protection@4.3.0"
      ]
    }
  }
}

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": {
    "prompt-protection-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "prompt-protection@4.3.0"
      ]
    }
  }
}

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": {
    "prompt-protection-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "prompt-protection@4.3.0"
      ]
    }
  }
}

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