How to Use the Password Strength Scorer MCP in Claude

Q: How do I install the Password Strength Scorer on Claude Desktop?

Open your claudedesktopconfig.json file and add the server configuration under the mcpServers key with your command and arguments. Restart the app, and you will see the tool icon in your chat window.

Let Claude Desktop run real entropy checks on your passwords using the zxcvbn engine.

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Connect Password Strength Scorer MCP to Claude Desktop

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Setup Password Strength Scorer with Claude Desktop

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Analyze real password entropy in Claude Desktop

The `score_password_strength` tool lets your Claude Desktop client evaluate raw strings against known dictionaries, keyboard patterns, and l33t-speak. Instead of relying on dumb regex rules, it uses Dropbox's zxcvbn engine to calculate actual combinatorial math. This MCP setup runs locally on your machine, so you can feed it raw inputs during development without sending sensitive data to third-party APIs. Your agent gets instant feedback on password viability directly inside the chat.

Get accurate crack time estimates

Running the `score_password_strength` tool returns concrete timeframes for offline, online, and slow-hashing attack scenarios. You get hard numbers showing exactly how long an attacker would take to brute-force a credential. Your Claude Desktop agent uses these metrics to suggest real-world improvements. It helps you design smarter user sign-up gates that block weak credentials before they hit your database.

Generate smart password feedback

By invoking the `score_password_strength` tool, you can identify specific weaknesses like common dates, names, or sequential keys. It does not just say a password is weak; it explains why. This MCP Server feeds these exact warnings to Claude Desktop so your agent can write precise UI tooltips. You can build registration forms that guide users toward secure choices without causing frustration.

Setup guide

Set up Password Strength Scorer MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The Password Strength Scorer MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the Password Strength Scorer MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under password-strength-scorer-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 Claude Desktop

Open your claude_desktop_config.json file and add the server configuration under the mcpServers key with your command and arguments. Restart the app, and you will see the tool icon in your chat window.

No, it runs entirely on your local machine. The MCP Server processes the password strings locally using the built-in zxcvbn engine, keeping your credentials off the internet.

Yes, you can ask your agent to analyze a list of credentials. The tool will check each string and flag the ones that fall below a safe entropy score.

It returns an integer from 0 to 4. A score of 0 means extremely weak, while a 4 indicates a strong passphrase that resists modern dictionary attacks.

Every raw password string you test stays inside your local environment. This server does not log inputs or connect to external databases, meaning your secrets never leave your memory space.

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