{"uid":"cap_yCmYFH8aPDATdQRz7qTNW","slug":"sha-512-base64url-digest-of-hex-bytes-9692aa14","name":"SHA-512 Base64URL Digest of Hex Bytes","description":"Call when an agent needs a sha512 digest of hex bytes, encoded as base64url. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-base64url-rawhex first.","url":"https://agentshelf.syntexa.ch/v1/digest-sha512-base64url-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":"0.007","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":"$0.007/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.007","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.007","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_EZrCool2WgKR4Vm7y1n0F","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.007","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 hash of raw bytes supplied as a hex string and returns the digest encoded as base64url","exampleAgentPrompt":"Compute the SHA-512 hash of the hex bytes 'deadbeefcafe0123' and give me the result encoded as base64url.","exampleUseCases":[{"title":"Integrity check of binary blob","prompt":"I have this binary data represented as hex — '4f3a9c00ff12ab88' — can you run a SHA-512 hash on it and give me the base64url digest so I can compare it against a known checksum?"},{"title":"Sign token payload before transmission","prompt":"Take this hex-encoded payload 'a1b2c3d4e5f60718' and produce a SHA-512 base64url digest of it so I can include it as an integrity token in my API request."},{"title":"Fingerprint raw cryptographic key material","prompt":"I've got some raw key material in hex form — '0011223344556677aabbccddeeff0000' — please SHA-512 hash it and return the base64url-encoded digest so I can store a safe fingerprint."}],"resultDescription":"A SHA-512 digest of the input hex bytes, returned as a base64url-encoded string (no padding, URL-safe characters). The response is deterministic for identical inputs.","failureModes":["Invalid hex string (odd length or non-hex characters) causes a 400 error","Empty or missing text field returns a validation error","text field exceeding 100,000 character limit is rejected","Payment not fulfilled results in 402 response before computation occurs","Malformed JSON body returns 400"],"whenToPreferThis":"Choose this endpoint when you specifically need a SHA-512 hash of binary data supplied as a hex string and want the result in base64url encoding — a combination not commonly offered by generic hash utilities. Prefer the unpaid sandbox endpoint (POST /v1/sandbox/digest-sha512-base64url-rawhex) when available to avoid the $0.007 USDC charge. Use this paid version when the sandbox is unavailable or rate-limited.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:05.518Z","isFirstParty":false,"canonicalSlug":"sha-512-base64url-digest-of-hex-bytes-9692aa14"}