{"uid":"cap__dlwLfKeU4-Wxyp5OXGeq","slug":"sha-512-256-hex-digest-62ef2586","name":"SHA-512/256 Hex Digest","description":"Call when an agent needs a sha512-256 digest of text, encoded as hex. No network and no LLM. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-hex first.","url":"https://agentshelf.syntexa.ch/v1/digest-sha512-256-hex?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":["hello"],"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":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_WZQG9BTdyga1xgVi6Wv0i","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the SHA-512/256 cryptographic hash of a given text string and returns it as a hexadecimal-encoded digest.","exampleAgentPrompt":"Can you compute the SHA-512/256 hash of this text and give it back to me as a hex string: 'The quick brown fox jumps over the lazy dog'?","exampleUseCases":[{"title":"Content deduplication fingerprinting","prompt":"Hash this document text with SHA-512/256 and return the hex digest so I can use it as a deduplication key: 'User agreement version 3.2 — all rights reserved, updated May 2025.'"},{"title":"API payload integrity check","prompt":"I need a SHA-512/256 hex checksum of this JSON payload string so I can attach it as a signature header before sending the request: '{\"order_id\":\"abc123\",\"amount\":99.99}'"},{"title":"Password hashing for storage","prompt":"Give me the SHA-512/256 hex digest of the string 'MyS3cur3P@ssw0rd!' so I can store the hashed version instead of the plaintext."}],"resultDescription":"Returns a hex-encoded SHA-512/256 digest string (64 characters) computed from the input text. The computation is performed locally with no network calls or LLM involvement, guaranteeing deterministic and fast results.","failureModes":["Empty or missing text field returns a validation error","Text exceeding 100,000 characters is rejected","Missing or invalid payment (x402) results in a 402 Payment Required response","Malformed request body returns a 400 Bad Request"],"whenToPreferThis":"Choose this endpoint when you need a SHA-512/256 (truncated SHA-512) hash specifically, as opposed to SHA-256 or SHA-3 variants. It is ideal when security policy mandates SHA-512/256 for its resistance to length-extension attacks. Prefer it over the free sandbox endpoint (/v1/sandbox/digest-sha512-256-hex) only after the sandbox is unavailable or rate-limited. It is fully deterministic, offline, and does not involve any external network requests or LLM processing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:33:10.957Z","isFirstParty":false,"canonicalSlug":"sha-512-256-hex-digest-62ef2586"}