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Pwned Password Checker
x402
Pwned Password Checker is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-31).
Checks whether a given password has appeared in known data breaches using Have I Been Pwned-style lookup
Price / call$0.002
Success—
StatusUnknown
How this service works
Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.
Output
Returns a JSON object indicating whether the password has been found in known breach databases (pwned: true/false), the password that was checked, and the number of times it has appeared across breach datasets (pwned_count).
Example use cases
Pre-registration password safety check
“Before I create my new account, can you check if the password 'Sunshine2023!' has ever been found in a data breach so I know if it's safe to use?”
Security audit of stored credentials
“I have a list of candidate passwords I want to allow users to set — start by checking if 'letmein123' has been compromised in any known breach and how many times it appears.”
User-facing password strength validation
“My user just typed in 'password1' as their new password — can you check whether it's been pwned and how many breach records it shows up in so I can warn them?”
Technical details
Endpoint
GEThttps://anibalb.duckdns.org/x402/pwned-password?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, keyless, pay-per-use breach check for a password without setting up API keys or accounts. Ideal for agents performing on-the-fly password validation, security audits, or enforcing breach-aware password policies. Useful when HIBP direct API access is unavailable or when you want a unified multi-tool API that includes breach checking alongside other security and utility functions.
Side effects
- Missing 'password' query parameter returns an error
- Network timeout or upstream HIBP service unavailability
- Payment failure via x402 protocol blocks the request
- Invalid or empty password string may return unexpected results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"pwned": true,
"password": "hunter2",
"pwned_count": 12345
}
}Tags
x402
Reviews
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