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HaveIBeenPwned Password Breach Checker (k-Anonymity)
x402
HaveIBeenPwned Password Breach Checker (k-Anonymity) is a paid API for AI agents from netintel-production-440c.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Checks whether a password has appeared in known data breaches using the HaveIBeenPwned Pwned Passwords API with k-anonymity, returning a breach count and risk classification without ever transmitting the full password.
Price / call$0.01
Success—
StatusUnknown
How this service works
Check if a password has appeared in known data breaches using the HaveIBeenPwned Pwned Passwords API with k-anonymity — the full password is never transmitted, only a 5-character SHA-1 hash prefix — returns breach count and a risk classification so agents can enforce password policies without storing or exposing credentials.
Output
Returns a JSON object with: a boolean 'breached' flag indicating if the password was found in known breaches, a numeric 'breach_count' showing how many times it appeared, a 'risk_level' string (e.g. 'critical', 'high', 'low'), a 'grade' letter score, a numeric 'score', and a 'findings' array with breach detail records.
Example use cases
Example prompt
“Can you check if the password 'Summer2023!' has ever shown up in a data breach and tell me how risky it is to use?”
Technical details
Endpoint
GEThttps://netintel-production-440c.up.railway.app/breach-check/password?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to check whether a specific plaintext password has appeared in known data breach databases, especially when privacy is a concern — the k-anonymity design means the full password is never sent over the wire. Prefer this over rolling your own HIBP integration, or when you need a combined breach count plus risk classification in one call. Ideal for enforcing password policies in agentic workflows, onboarding flows, or security audits.
Side effects
- Missing 'password' query parameter returns a 400-level error
- HaveIBeenPwned API upstream unavailability causes a 502 or timeout
- Extremely long passwords may be rejected or truncated
- Rate limiting from the upstream HIBP API may cause transient failures
Input
{
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"password": "Password123"
}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"grade": "F",
"score": 0,
"breached": true,
"findings": [
{
"rule": "critical_breach",
"detail": "Password found 1505362 times in known data breaches",
"deduction": -100
}
],
"risk_level": "critical",
"breach_count": 1505362
}Schema · Response
{
"type": "json",
"example": {
"grade": "F",
"score": 0,
"breached": true,
"findings": [
{
"rule": "critical_breach",
"detail": "Password found 34521 times in known data breaches",
"deduction": -100
}
],
"risk_level": "critical",
"breach_count": 34521
}
}Tags
x402
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