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Kairo Password Strength Analyzer
x402
Kairo Password Strength Analyzer is a paid API for AI agents from kairo-x402.kairo-ships.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-13).
Analyzes a password string and returns its length, character pool size, entropy in bits, and a strength verdict
Price / call$0.02
Success—
StatusUnknown
How this service works
Crypto-native ($0.02 USDC on Base, x402) utility endpoints for agents. No accounts, no KYC — pay-per-call.
Output
Returns a JSON object with: 'length' (integer character count), 'pool' (integer size of the character set used, e.g. 26 for lowercase only, 62 for alphanumeric), 'entropy_bits' (float representing log2 of possible combinations), and 'verdict' (string strength rating such as 'weak', 'fair', 'strong', or 'very strong')
Example use cases
Pre-registration password gate
“Before I let this user set their account password, run 'Summer2024!' through the strength checker — tell me the entropy bits and verdict so I know whether to accept or reject it.”
Security audit of existing credentials
“I need to evaluate how secure the password 'correct-horse-battery-staple' is — what's its entropy and strength verdict?”
Password policy enforcement check
“My app requires high-entropy passwords — can you analyze 'qwerty123' and tell me its bit entropy and pool size so I can decide if it meets our policy?”
Technical details
Endpoint
GEThttps://kairo-x402.kairo-ships.workers.dev/api/strengthWhen to prefer
Choose this endpoint when you need a fast, stateless, pay-per-call password entropy and strength evaluation with no account setup or API key — ideal for agent workflows where you want to validate user-supplied passwords on the fly without integrating a full auth library. Prefer it over rolling your own entropy calculation or using heavyweight security SDKs when you need a simple verdict and numeric entropy score quickly.
Side effects
- Missing 'pw' parameter returns an error — the password string is required
- Very long strings may be truncated or rejected depending on worker limits
- Empty string may return a zero-entropy result or validation error
- Network timeouts on the Cloudflare Worker edge node
- x402 payment failure if the USDC balance is insufficient or the payment header is malformed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| pwrequired | string | String to analyze |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| poolrequired | integer | |
| lengthrequired | integer | |
| verdictrequired | string | |
| entropy_bitsrequired | number |
Tags
x402
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