{"uid":"cap_4utfXFxtDnH2vvJ0QqYzZ","slug":"keyronne-cryptographic-hash-hmac-api-70d3d456","name":"Keyronne Cryptographic Hash & HMAC API","description":"Compute cryptographic digests and HMACs deterministically: MD5, SHA-1, SHA-256, SHA-384, SHA-512, output as hex, base64, or base64url. Add a \"key\" for HMAC. Built for checksums, content addressing, and signature verification. Inputs are hashed and discarded. POST a JSON body like: {\"text\":\"hello world\",\"algorithm\":\"sha256\",\"encoding\":\"hex\"}","url":"https://keyronne.com/api/hash","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"key":{"type":"string","description":"If present, compute HMAC-<algorithm> with this key instead of a plain hash."},"text":{"type":"string","description":"The data to hash."},"encoding":{"enum":["hex","base64","base64url"],"type":"string","default":"hex"},"algorithm":{"enum":["md5","sha1","sha256","sha384","sha512"],"type":"string","default":"sha256"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_o_iSaHNnA1-J19GBcMq4k","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes cryptographic digests (MD5, SHA-1, SHA-256, SHA-384, SHA-512) and HMACs over input text, returning results as hex, base64, or base64url.","exampleAgentPrompt":"Compute a SHA-256 hash of the string 'hello world' and give me the result as hex.","exampleUseCases":null,"resultDescription":"Returns the computed hash or HMAC as a string in the requested encoding (hex, base64, or base64url). The input text is discarded after hashing and never stored.","failureModes":["Unsupported algorithm value returns validation error","Invalid encoding enum value returns error","Missing 'text' field returns 400 bad request","Key provided but algorithm not supported for HMAC returns error","Payment not fulfilled returns 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need deterministic, server-side cryptographic hashing without running local code — ideal for agents that need checksums, content fingerprints, HMAC signatures, or hash-based verification and cannot execute native crypto libraries. Prefer over alternatives when HMAC with a secret key is needed or when multiple algorithms and output encodings must be supported in a single unified API.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:41:00.460Z","isFirstParty":false}