Password Strength Checker — Entropy & Crack Time
APIFreePassword strength evaluation API for AI agents. Score 0-100 with entropy bits, estimated crack time (brute force and dictionary), pattern detection, and actionable improvement tips. Tools: security_check_password. Use this for password policy enforcement, user registration validation, or security
- Best for
- password strength scoring with entropy calculation, crack time estimation for passwords, actionable password improvement tips
- Type
- API · Free
- Score
- 35/100
- Best alternative
- Amazon Q Developer
Capabilities4 decomposed
password strength scoring with entropy calculation
Medium confidenceThis capability evaluates the strength of a password by calculating its entropy, which quantifies the unpredictability of the password based on its length and character variety. It uses a mathematical formula to derive a score from 0 to 100, indicating how resistant the password is to brute-force attacks. This approach allows for a nuanced understanding of password strength beyond simple length checks, making it distinct in its comprehensive evaluation.
Calculates entropy and crack time using a proprietary algorithm that factors in character diversity and length, providing a more accurate assessment than standard methods.
More comprehensive than basic regex checks as it quantifies strength with a score and actionable insights.
crack time estimation for passwords
Medium confidenceThis capability estimates the time it would take to crack a password using both brute-force and dictionary attack methods. It leverages computational models that simulate various attack vectors, providing users with a realistic timeframe based on current computing power and attack strategies. This estimation helps users understand the practical implications of their password choices.
Utilizes a dynamic model that adjusts estimates based on the latest advancements in computing power and known attack methodologies, unlike static calculators.
Offers more accurate and context-aware estimates compared to static models that do not account for evolving attack strategies.
actionable password improvement tips
Medium confidenceThis capability generates tailored recommendations for users to enhance their password strength based on the analysis of their current password. It identifies weaknesses such as lack of complexity or common patterns and suggests specific changes, such as adding special characters or increasing length. This proactive approach empowers users to create more secure passwords.
Generates context-specific tips based on real-time analysis of the password's weaknesses, rather than generic advice, making it more relevant for users.
More personalized than generic password strength tips found in many password managers, as it directly analyzes the user's input.
pattern detection in passwords
Medium confidenceThis capability analyzes passwords for common patterns and weaknesses, such as sequential characters, repeated characters, or dictionary words. It employs pattern recognition algorithms to identify vulnerabilities that could be exploited by attackers, providing a detailed report on the password's structure. This analysis helps users understand the risks associated with their chosen passwords.
Employs advanced algorithms to detect a wide range of patterns, including those specific to user behavior, rather than just relying on static lists of common passwords.
More comprehensive than basic pattern checks that only look for a limited set of known weak passwords.
Capabilities are decomposed by AI analysis. Each maps to specific user intents and improves with match feedback.
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Best For
- ✓security teams implementing password policies
- ✓developers validating user input during registration
- ✓developers looking to enhance user security
- ✓security auditors assessing password policies
- ✓user experience designers focused on security
- ✓developers implementing user feedback mechanisms
- ✓security analysts conducting password audits
- ✓developers creating user registration systems
Known Limitations
- ⚠Does not account for user behavior patterns in password creation
- ⚠Only evaluates static password strength, not dynamic threats
- ⚠Estimates are based on current technology and may not account for future advancements
- ⚠Does not consider specific attack scenarios or user behavior
- ⚠Recommendations may not cover all possible security concerns
- ⚠Relies on the initial password input for generating tips
Requirements
Input / Output
UnfragileRank
UnfragileRank is computed from adoption signals, documentation quality, ecosystem connectivity, match graph feedback, and freshness. No artifact can pay for a higher rank.
Repository Details
About
Password strength evaluation API for AI agents. Score 0-100 with entropy bits, estimated crack time (brute force and dictionary), pattern detection, and actionable improvement tips. Tools: security_check_password. Use this for password policy enforcement, user registration validation, or security audits. Returns machine-readable strength data for automated decisions. Returns: {score, entropy, crackTime, tips[]}. No API key required — x402 micropayment $0.001/call on Base L2.
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