{"uid":"cap_xytxu7PdQsGfEVa4rPs6V","slug":"sha-512-256-digest-base64-hex-input-f101bdd6","name":"SHA-512/256 Digest → Base64 (Hex Input)","description":"Call when an agent needs a sha512-256 digest of hex bytes, encoded as base64. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-base64-rawhex first.","url":"https://agentshelf.syntexa.ch/v1/digest-sha512-256-base64-rawhex?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"key":{"type":"string","maxLength":512,"minLength":1,"description":"HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."},"text":{"type":"string","examples":["68656c6c6f"],"maxLength":100000,"minLength":1,"description":"Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.008","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":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_EYDBqmN0Caoim97IeqJLb","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes a SHA-512/256 hash of hex-encoded byte input and returns the digest encoded as Base64.","exampleAgentPrompt":"Hash these hex bytes using SHA-512/256 and give me the result as Base64: 'deadbeef0102030405'","exampleUseCases":[{"title":"Content integrity fingerprint from raw bytes","prompt":"I have some binary data represented as hex — 'cafebabe00010203ff' — can you compute its SHA-512/256 digest and give me the result as Base64 so I can use it as a content fingerprint?"},{"title":"Keyed hash for message authentication","prompt":"I need a SHA-512/256 hash of these hex-encoded bytes '0a1b2c3d4e5f' using the key 'mySecretKey' — return it as Base64 for my message verification check."},{"title":"Cryptographic checksum for audit log entry","prompt":"Compute a SHA-512/256 digest of this hex byte string '48656c6c6f576f726c64' and encode the result as Base64 — I need it for an audit log integrity record."}],"resultDescription":"Returns a Base64-encoded SHA-512/256 hash computed over the input hex bytes. The response is a compact cryptographic digest suitable for integrity verification, fingerprinting, or further cryptographic operations.","failureModes":["Invalid or non-hex characters in the text field cause a 400 Bad Request","Input text or key exceeds maxLength limits (512 for key, 100000 for text) returns validation error","Malformed JSON body results in a 400 error","Payment not included or insufficient USDC returns a 402 Payment Required","Service unavailable returns 503"],"whenToPreferThis":"Use this endpoint when you specifically need a SHA-512/256 (truncated SHA-512) digest of raw bytes expressed as hex, with the output in Base64 format. Prefer the free sandbox variant (/v1/sandbox/digest-sha512-256-base64-rawhex) if available. Choose this over SHA-256 or SHA-512 endpoints when your security protocol or interoperability requirement mandates the SHA-512/256 algorithm specifically (common in some TLS and certificate workflows).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:16.792Z","isFirstParty":false,"canonicalSlug":"sha-512-256-digest-base64-hex-input-f101bdd6"}