# Password Strength Scorer MCP for AI Agents AI Agent Connect

> Password Strength Scorer uses the Dropbox zxcvbn engine to evaluate password security. It provides a 0-4 score, real crack time estimates for different attack scenarios, and specific feedback on why a password is weak. It's a local tool, so your data never leaves your machine.

## Overview
- **Category:** loved-by-devs
- **Price:** Free
- **Endpoint:** https://edge.vinkius.com/vk_preview_NJZOdN2hIY4Yj0pMDCcP324aC60LQVkrwnFN1xP0/ai-agent-connect
- **Tags:** password-strength, entropy-analysis, security-best-practices, crack-time-estimation, authentication-security

## Description

Most AI models fail at assessing password security. If you ask one if a password is strong, it usually just looks for a mix of uppercase letters, numbers, and symbols. It'll tell you a password like 'P@ssw0rd123' is safe because it's complex. It isn't. A hacker can crack that in seconds because it's just a common word with simple substitutions. This Connector changes that by using the zxcvbn engine, the same tech Dropbox trusts to protect over 700 million users. It doesn't just check for rules. It performs a real combinatorial analysis against dictionaries, keyboard patterns, and dates. When you use this through Vinkius, your agent stops guessing and starts calculating. You'll get a score from 0 to 4, along with specific crack times for different attack types like online throttled or local fast hashes. It even points out the exact reasons for a low score, like common l33t-speak patterns. Because the engine runs locally, your passwords stay private. No data ever hits a network. It's a tool for people who need actual security, not just a checklist.

## Tools

### score_password_strength
Send a password to the engine to get a 0-4 score and crack time estimates. This tool identifies patterns like keyboard sequences and dates to give you a real sense of security.

## Prompt Examples

**Prompt:** 
```
Our new hire set their password to 'Summer2024!'. Is that actually secure?
```

**Response:** 
```
### Security Analysis

**Score:** 1 (Weak)

**Warnings:**
* Common word used
* Predictable year
* Single symbol

**Crack Time:** ~3 minutes (Local)

**Suggestion:** Use a phrase that is unrelated to your name, location, or current year.
```

**Prompt:** 
```
Is 'correct horse battery staple' really stronger than 'Tr0ub4dor&3'?
```

**Response:** 
```
### Entropy Comparison

| Password | Score | Strength | Crack Time |
| :--- | :--- | :--- | :--- |
| **correct horse battery staple** | 4 | Very Strong | Centuries |
| **Tr0ub4dor&3** | 1 | Weak | Seconds |

**Verdict:** The first option is significantly more secure because it avoids common l33t-speak patterns and dictionary words.
```

**Prompt:** 
```
Audit our auto-generated API keys for security compliance before deployment.
```

**Response:** 
```
### API Key Audit

**Score:** 4 (Very Strong)

**Analysis:**
* Entropy exceeds compliance minimums.
* No dictionary patterns detected.
* Crack time is estimated in centuries at 10B guesses/sec.

**Status:** ✅ Approved for deployment.
```

## Capabilities

### Get a 0-4 security score
Receive a standardized rating based on real combinatorial analysis.

### See crack time estimates
View how long it would take an attacker to crack a password in various scenarios.

### Identify l33t-speak patterns
Detect common substitutions like '3' for 'e' that hackers easily bypass.

### Detect keyboard sequences
Flag passwords based on common patterns like 'qwerty' or 'asdf'.

### Receive actionable feedback
Get specific instructions on how to improve a weak password.

### Run analysis 100% locally
Ensure all password data remains on your machine with zero network calls.

## Use Cases

### Auditing API keys
A developer asks the agent to check a set of auto-generated API keys for security compliance before deployment.

### User feedback loops
A sign-up flow tells a user why their password is weak and provides specific suggestions on how to fix it.

### Corporate policy verification
An IT admin verifies if new employee passwords meet actual security standards rather than just checking for a symbol.

### Security research
A security researcher analyzes the entropy of various common password types to find patterns in weak credentials.

## Benefits

- Stop relying on AI hallucinations for security. Use score_password_strength to get actual entropy data instead of a guess.
- Get real-world crack times. You'll see exactly how long an attacker has before they get in based on different attack scenarios.
- Identify specific weaknesses. The tool tells you if a password relies on common l33t-speak or dictionary words.
- Keep data private. Since this Connector runs locally, your passwords never leave your environment during the audit.
- Speed up security audits. You can batch-check passwords and get actionable feedback for users immediately.

## How It Works

The bottom line is you get a data-driven security score instead of a generic AI guess.

1. Pass a password string to your agent to be evaluated.
2. The Connector runs the string through the zxcvbn engine for analysis.
3. You get a score, crack time estimates, and specific warnings back.

## Frequently Asked Questions

**How does Password Strength Scorer work for my data?**
It runs 100% locally on your machine. Your passwords never leave your environment or hit a network, making it safe for sensitive security audits.

**Can I use Password Strength Scorer to check API keys?**
Yes, it's excellent for that. It analyzes the entropy of the key to give you a score and a crack time estimate, helping you verify security before deployment.

**Is Password Strength Scorer better than standard complexity checks?**
Yes, because it looks at real crack difficulty. Instead of just checking for symbols, it detects common patterns, keyboard sequences, and l33t-speak.

**Does Password Strength Scorer give actual crack times?**
It does. You'll get estimates for different scenarios, including online throttled attacks and local fast hash attacks.

**Can I use Password Strength Scorer to help users create better passwords?**
Absolutely. The tool provides actionable feedback that explains exactly why a password is weak and gives specific suggestions on how to improve it.

**Is Password Strength Scorer safe for production use?**
It is safe for analysis because it's local. You can use it to audit credentials or build feedback loops without exposing your data to third-party APIs.

**Why can't my AI evaluate password strength?**
AI checks superficial rules like 'has uppercase + number + symbol'. zxcvbn does combinatorial analysis — it knows 'P@ssw0rd' is just 'Password' with l33t substitutions, and rates it as weak despite passing every 'rule-based' check.

**Is the password sent to any external server?**
No. 100% local. The embedded dictionary and pattern matching engine run entirely in-process. Zero network calls, zero data leakage, zero risk.

**What do the crack time numbers actually mean?**
Four real attack scenarios: Online throttled (100/hour — most login pages), Online unthrottled (10/sec), Local slow hash (10K/sec — bcrypt), Local fast hash (10B/sec — MD5/SHA). Choose the scenario matching your system.