Have I Been Pwned MCP MCP server

Official MCP server enabling AI agents to query breach intelligence, check email and domain exposure, investigate stealer logs, and query Pwned Passwords using k-anonymity. Supports both public metadata and authenticated subscriber features via OAuth.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by Have I Been Pwned

MCP endpoint (Streamable HTTP)

https://haveibeenpwned.com/mcp

Vendor documentation

What you can do with it

Check if an email address appears in known data breaches
Investigate exposure across verified domains
Research breach details and exposed data classes
Query Pwned Passwords using k-anonymity

Tools advertised by the last live check:

hibp_list_breaches
hibp_get_breach
hibp_get_latest_breach
hibp_list_data_classes
hibp_get_pwned_passwords_range
hibp_get_breached_account
hibp_get_breached_account_range
hibp_get_paste_account
hibp_get_breached_domain
hibp_list_subscribed_domains
hibp_get_subscription_status
hibp_get_stealer_logs_by_email
hibp_get_stealer_logs_by_website_domain
hibp_get_stealer_logs_by_email_domain
hibp_generate_domain_verification_dns_token
hibp_verify_domain_verification_dns_token
hibp_send_domain_verification_email

Connect from your client

Each snippet registers the same endpoint; pick the client you 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.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http have-i-been-pwned-mcp https://haveibeenpwned.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add have-i-been-pwned-mcp --url https://haveibeenpwned.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable have-i-been-pwned-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "have-i-been-pwned-mcp": {
      "url": "https://haveibeenpwned.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "have-i-been-pwned-mcp": {
      "type": "streamableHttp",
      "url": "https://haveibeenpwned.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start have-i-been-pwned-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "have-i-been-pwned-mcp": {
      "type": "http",
      "url": "https://haveibeenpwned.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http have-i-been-pwned-mcp https://haveibeenpwned.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "have-i-been-pwned-mcp": {
      "url": "https://haveibeenpwned.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "have-i-been-pwned-mcp": {
      "serverUrl": "https://haveibeenpwned.com/mcp"
    }
  }
}

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