Password Breach Check MCP Server: Install & Setup

Install Password Breach Check in Claude Code

Claude Code

claude mcp add password-breach-check -- npx -y password-breach-check-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "password-breach-check": {
      "command": "npx",
      "args": [
        "-y",
        "password-breach-check-mcp"
      ]
    }
  }
}

Frequently asked questions

What does the Password Breach Check MCP server do?

Check if a password has appeared in known breaches without sending the password. No key required.

Is the Password Breach Check MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Password Breach Check run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Password Breach Check to Claude Code?

Run: claude mcp add password-breach-check -- npx -y password-breach-check-mcp

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