Koskamo

Have I Been Pwned MCP

This MCP server provides access to the Have I Been Pwned breach catalogue, allowing agents to query for every known data breach and retrieve details for specific breaches. It is part of a monorepo of community-built MCP servers that generally read public data without requiring vendor API keys.

Package and access

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

Have I Been Pwned MCP logo, by mrfentmenCommunity listingLocal stdioSource reviewed; not executedPublished by mrfentmen
Vendor documentation

What you can do with it

  • Query the catalogue of every known data breach
  • Retrieve detailed information for a specific breach
  • Check if an email or domain has been involved in a breach

Source and maintenance

Community listingRegistry 1.0.1
mcp-registry: io.github.mrfentmen/haveibeenpwned-mcp@1.0.1Source repository
Maintenance checked

Packages and installation

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

@mrfentmen/haveibeenpwned-mcp 1.0.0

npm
@mrfentmen/haveibeenpwned-mcp package definition
{
  "version": "1.0.0",
  "transport": "stdio",
  "identifier": "@mrfentmen/haveibeenpwned-mcp",
  "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": {
    "have-i-been-pwned-mcp-mrfentmen-haveibeenpwned-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/haveibeenpwned-mcp@1.0.0"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "have-i-been-pwned-mcp-mrfentmen-haveibeenpwned-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/haveibeenpwned-mcp@1.0.0"
      ]
    }
  }
}

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": {
    "have-i-been-pwned-mcp-mrfentmen-haveibeenpwned-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/haveibeenpwned-mcp@1.0.0"
      ]
    }
  }
}

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": {
    "have-i-been-pwned-mcp-mrfentmen-haveibeenpwned-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@mrfentmen/haveibeenpwned-mcp@1.0.0"
      ]
    }
  }
}

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