How to Use the Password Strength Scorer MCP in Cursor

Write secure authentication code in Cursor with real-time password entropy metrics.

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Connect Password Strength Scorer MCP to Cursor

Create your Vinkius account to connect Password Strength Scorer to Cursor — we handle the hosting, security, and runtime updates so you don't have to. No server setup required.

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Setup Password Strength Scorer with Cursor

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Test passwords directly in Cursor

The `score_password_strength` tool lets your Cursor agent test raw input strings against a dictionary of common words and keyboard patterns. It relies on the zxcvbn engine to calculate actual mathematical entropy. This setup lets you test your authentication logic in real time. Your editor can call the MCP Server to verify that your sign-up form rejects weak inputs before you commit the code.

Generate realistic mock credentials

Calling the `score_password_strength` tool calculates crack times for different attack vectors like online throttling or offline brute-forcing. Your Cursor agent can use these metrics to write unit tests for your database validation rules. You get real mathematical feedback instead of relying on regex. This allows you to build test suites that mimic actual attack scenarios.

Design smart registration tooltips

When you run the `score_password_strength` tool, it provides actionable warnings and suggestions when it detects weak patterns like sequential keys or l33t-speak. No AI can guess entropy accurately, but this engine does. Your Cursor agent can read these suggestions to generate precise, user-friendly error messages for your front-end code. This helps you build registration forms that improve security without ruining the user experience.

Setup guide

Set up Password Strength Scorer MCP in Cursor

Prerequisites

Cursor installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP Settings

Go to Cursor Settings → MCP or open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and search for "MCP: Add Server".
2

Add the Password Strength Scorer MCP

Cursor will create or open .cursor/mcp.json in your project root. Paste the JSON snippet on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Enable Agent mode

Open Composer (Cmd+I / Ctrl+I) and switch to Agent mode using the dropdown at the top. MCP tools are only available in Agent mode.
4

Verify the connection

Ask Cursor something like "List my recent Password Strength Scorer transactions." If the MCP tools are loaded correctly, Cursor will call the Password Strength Scorer tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

{
  "mcpServers": {
    "password-strength-scorer-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by zxcvbn. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Password Strength Scorer MCP in Cursor

Add the MCP Server to your project-level .cursor/mcp.json or global ~/.cursor/mcp.json file. Once added, enable Agent mode in the chat to let the editor access the tool.

No, the engine runs locally on your machine. This MCP Server processes all password strings offline, ensuring your development data remains completely private.

Yes, you can ask the agent to run the tool against your test data. It will help you write assertions based on the 0-4 score and crack time estimates.

It uses the Dropbox zxcvbn library. This library evaluates passwords based on pattern matching, dictionary checks, and keyboard sequences rather than simple character rules.

Yes, because the server runs as a local process on your computer. It never transmits your password strings to external APIs or cloud endpoints, keeping your secrets confined to your local sandbox.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

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