{"uid":"cap_r5VttiQBrSfpSJjMJoGpN","slug":"netintel-production-440c-up-railway-app-8c178a2a","name":"HaveIBeenPwned Password Breach Checker (k-Anonymity)","description":"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.","url":"https://netintel-production-440c.up.railway.app/breach-check/password?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["password"],"properties":{"password":{"type":"string","description":"Password to check against known data breaches (1-500 characters; sent as a query param but only a k-anonymity SHA-1 prefix leaves the server)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"grade":{"type":"string"},"score":{"type":"number"},"breached":{"type":"boolean"},"findings":{"type":"array"},"risk_level":{"type":"string"},"breach_count":{"type":"number"}}}}}}},"responseSchema":{"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}},"example":{"request":{"input":{"type":"http","method":"GET","queryParams":{"password":"Password123"}}},"response":{"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}},"exampleRequest":{"password":"Password123"},"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_857Kl4rmF6HV81Sytvg20","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"Can you check if the password 'Summer2023!' has ever shown up in a data breach and tell me how risky it is to use?","exampleUseCases":null,"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:43:54.048Z","isFirstParty":false,"canonicalSlug":"netintel-production-440c-up-railway-app-8c178a2a"}