{"uid":"cap_wjEOQPdqfabdfw6jkFo_v","slug":"kairo-password-strength-analyzer-342f55e5","name":"Kairo Password Strength Analyzer","description":"Crypto-native ($0.02 USDC on Base, x402) utility endpoints for agents. No accounts, no KYC — pay-per-call.","url":"https://kairo-x402.kairo-ships.workers.dev/api/strength","method":"GET","headers":{},"bodySchema":{"type":"object","required":["pw"],"properties":{"pw":{"type":"string","description":"String to analyze"}}},"responseSchema":{"type":"object","required":["length","pool","entropy_bits","verdict"],"properties":{"pool":{"type":"integer"},"length":{"type":"integer"},"verdict":{"type":"string"},"entropy_bits":{"type":"number"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9CLLoRyQsty2Um1theUEX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Analyzes a password string and returns its length, character pool size, entropy in bits, and a strength verdict","exampleAgentPrompt":"Can you check how strong the password 'Tr0ub4dor&3' is — I want to know its entropy in bits and whether it's actually secure?","exampleUseCases":[{"title":"Pre-registration password gate","prompt":"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."},{"title":"Security audit of existing credentials","prompt":"I need to evaluate how secure the password 'correct-horse-battery-staple' is — what's its entropy and strength verdict?"},{"title":"Password policy enforcement check","prompt":"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?"}],"resultDescription":"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')","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:38:47.457Z","isFirstParty":false}