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Pwned Password Check
x402
Pwned Password Check is a paid API for AI agents from 164.160.90.241.sslip.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).
Checks whether a password has appeared in known data breaches using the Have I Been Pwned k-anonymity range API, returning the breach count without exposing the full hash.
Price / call$0.02
Success—
StatusUnknown
How this service works
Check whether a password's SHA-1 hash appears in known breaches (Have I Been Pwned range API, k-anonymity, the full hash never leaves our server). Returns breach count.
Output
Returns the number of times the given password's SHA-1 hash has appeared across known breach datasets. A count of zero means the password was not found in any breach. A non-zero count indicates how many times it has been seen, allowing the caller to assess compromise risk. The k-anonymity model ensures only the first 5 characters of the SHA-1 hash are transmitted externally.
Example use cases
Pre-registration password safety check
“Before I let a user set their new account password, check if 'Sunshine2023' has ever shown up in a breach database — compute the SHA-1 and do a k-anonymity pwned check so the full hash stays private.”
Auditing stored passwords for compromise
“I'm auditing our password list — take the SHA-1 hash 8CB2237D0679CA88DB6464EAC60DA96345513964 and tell me how many times it's appeared in known data breaches via the Have I Been Pwned range lookup.”
Security policy enforcement for new passwords
“My app needs to reject passwords that are known to be breached. Check whether the password 'Password123' has been pwned and return the breach count so I can block it if it's been seen before.”
Technical details
Endpoint
GEThttps://164.160.90.241.sslip.io/api/sec-haveibeenpwned-hash-lookup?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need privacy-safe password breach checking using k-anonymity — meaning the full password hash never leaves your server and is never sent to a third party. Ideal for agents enforcing password security policies, auditing credential lists, or blocking compromised passwords at registration. Prefer this over direct HIBP API calls when you want a managed, paid-per-call service that handles the range API logic for you.
Side effects
- Invalid or malformed SHA-1 hash (not 40 hex characters) — returns an error response
- Network timeout reaching the upstream Have I Been Pwned API — may return a 502 or 504
- Rate limiting by the upstream HIBP range API — may return an error if called excessively
- Non-hex characters in the hash parameter cause a bad request error
- HIBP service outage results in unavailable response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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