@pipeworx/hibp

Have I Been Pwned MCP — breach history + pwned passwords.

Part of Pipeworx — an MCP gateway connecting AI agents to 1394+ live data sources.

Tools

Free (no key):

• check_password(password) — k-anonymity check; password never leaves the worker.

• check_password_prefix(sha1_prefix) — k-anonymity by SHA-1 prefix.

• list_breaches(domain?) — all breaches.

• get_breach(name) — single breach.

• list_data_classes() — canonical data-class tags.

Paid (BYO key):

• check_account(account, truncate?) — breaches an email appears in. Requires a paid HIBP subscription key (https://haveibeenpwned.com/API/Key).

Related MCP server: mcp-powo

Data sources

• https://api.pwnedpasswords.com/range/{prefix} — no auth

• https://haveibeenpwned.com/api/v3/ — hibp-api-key header for account lookups

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "hibp": {
      "url": "https://gateway.pipeworx.io/hibp/mcp"
    }
  }
}

Or connect to the full Pipeworx gateway for access to all 1394+ data sources:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English:

ask_pipeworx({ question: "your question about Hibp data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides

• pipeworx.io

License

MIT