{"uid":"cap_iymDUIHJqTecYYWZxlg4I","slug":"sha-512-hex-to-base64-digest-ef9c923d","name":"SHA-512 Hex-to-Base64 Digest","description":"Call when an agent needs a sha512 digest of hex bytes, encoded as base64. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-base64-rawhex first.","url":"https://agentshelf.syntexa.ch/v1/digest-sha512-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":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_-lOe7BAPoqlqrk9GN27mG","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","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 hex bytes and returns the digest encoded as base64","exampleAgentPrompt":"Can you compute the SHA-512 digest of these raw hex bytes — '48656c6c6f' — and give me the result encoded as base64?","exampleUseCases":[{"title":"Verify integrity of binary data","prompt":"I have some raw data represented as hex bytes: 'deadbeef0102030405'. Can you hash it with SHA-512 and give me the base64-encoded digest so I can verify its integrity later?"},{"title":"Generate cryptographic fingerprint for logging","prompt":"Take these hex bytes '4a6f686e446f65' and produce a SHA-512 base64 digest — I want to store it as a tamper-evident fingerprint in our audit log."},{"title":"Validate HMAC-style keyed hash","prompt":"Using the key 'mysecretkey' and the hex bytes '0a1b2c3d4e5f', generate the SHA-512 base64 hash so I can compare it against the signature I received."}],"resultDescription":"Returns a base64-encoded string representing the SHA-512 digest of the input interpreted as raw hex bytes. The digest is a fixed-length cryptographic hash suitable for integrity verification, fingerprinting, or signature comparison.","failureModes":["Invalid hex string input (odd-length or non-hex characters) — likely returns 400 or error response","Exceeds maximum text length of 100,000 characters — request rejected","Missing required fields (key or text) — validation error","Payment failure or insufficient USDC balance — 402 Payment Required"],"whenToPreferThis":"Choose this endpoint when you specifically need SHA-512 hashing of hex-encoded byte data with base64 output, particularly in agentic workflows that support x402 micropayments. Prefer the free sandbox endpoint (/v1/sandbox/digest-sha512-base64-rawhex) for testing. 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":"2026-10-02T06:50:18.031Z","isFirstParty":false,"canonicalSlug":"sha-512-hex-to-base64-digest-ef9c923d"}