{"uid":"cap_g5HcYc9eiv8cqM8CXDyqd","slug":"x402-hub-cryptography-api-2920bc4e","name":"X402 Hub Cryptography API","description":"63 paid API endpoints protected by x402 micropayments on Base","url":"https://x402-hub.vercel.app/api/cryptography?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["query"],"properties":{"query":{"type":"string","description":"Query parameter for the API"}}},"responseSchema":{"type":"object","properties":{"data":{"type":"object","description":"Response data from upstream API"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.107488","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":"$0.107488/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.107488","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.107488","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__XI6ozsP1AvNg5PXpRpPW","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.107488","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Answers cryptography-related queries via a paid micropayment-protected API endpoint on Base","exampleAgentPrompt":"Can you look up how SHA-256 hashing works and when I should use it versus SHA-3 — query the cryptography API for a detailed explanation.","exampleUseCases":[{"title":"Choosing the right encryption algorithm","prompt":"I'm building a secure messaging app and need to know which symmetric encryption algorithm — AES-256, ChaCha20, or something else — is best for mobile devices. Can you query the cryptography endpoint and explain the trade-offs?"},{"title":"Understanding digital signature schemes","prompt":"Can you explain how ECDSA digital signatures work and why they're used in blockchain transactions? Query the cryptography API for a thorough breakdown."},{"title":"Password hashing best practices","prompt":"What's the recommended way to hash and store user passwords securely in 2024 — should I use bcrypt, scrypt, or Argon2? Pull the answer from the cryptography API."}],"resultDescription":"A JSON response object containing a `data` field with the upstream API's cryptography-related answer, explanation, or computed result corresponding to the submitted query string.","failureModes":["Payment not included or insufficient USDC — returns HTTP 402 requiring x402 micropayment of ~$0.107 USDC","Empty or malformed query string — may return error or empty data object","Query outside cryptography domain may return irrelevant or null data","Upstream API unavailability causes 5xx errors","Rate limiting or quota exhaustion from upstream cryptography data provider"],"whenToPreferThis":"Choose this endpoint when you need on-demand cryptography knowledge, explanations, or lookup results and are operating in an x402 micropayment-enabled environment on Base. It is well-suited for agents that need cryptographic guidance without building a dedicated crypto knowledge base, and when the per-call cost of ~$0.11 USDC is acceptable for the value of the answer.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-25T18:52:18.750Z","isFirstParty":false,"canonicalSlug":"x402-hub-cryptography-api-2920bc4e"}