{"uid":"cap_wyADgxP5WmbNm7jkPY6qg","slug":"sha3-512-hex-digest-eb6c5d51","name":"SHA3-512 Hex Digest","description":"Call when an agent needs a sha3-512 digest of text, encoded as hex. No network and no LLM. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-hex first.","url":"https://agentshelf.syntexa.ch/v1/digest-sha3-512-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":"0.001","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_H7AuFGlaEM2T2_HDKzjQA","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 a SHA3-512 cryptographic hash of input text and returns it as a hexadecimal-encoded string, with no network or LLM calls involved.","exampleAgentPrompt":"Can you compute the SHA3-512 hash of the text 'Hello, world!' and give me the result as a hex string?","exampleUseCases":[{"title":"Content fingerprinting for deduplication","prompt":"I need to deduplicate articles before storing them — can you compute the SHA3-512 hex digest of this article text so I can use it as a unique fingerprint?"},{"title":"Integrity verification before transmission","prompt":"Before I send this JSON payload over the wire, compute a SHA3-512 hex hash of it so the receiver can verify nothing was tampered with."},{"title":"Password hashing for audit log","prompt":"Hash this user password string with SHA3-512 and return the hex output so I can store it safely in the audit log."}],"resultDescription":"Returns a SHA3-512 digest of the submitted text encoded as a lowercase hexadecimal string (128 hex characters representing 512 bits). No external calls are made; the result is purely deterministic.","failureModes":["Empty or missing 'text' field returns a validation error","Text exceeding 100,000 characters is rejected","Missing or invalid API key results in authentication failure","Payment not settled via x402 protocol results in 402 response"],"whenToPreferThis":"Use this endpoint when you specifically need SHA3-512 (Keccak-based, NIST standard) output in hexadecimal format. Prefer the free sandbox POST /v1/sandbox/digest-sha3-512-hex first; use this paid endpoint when the sandbox is unavailable or rate-limited. Choose this over SHA-2 variants when SHA3 is mandated by your security policy, and over base64-encoded siblings when hex output is required by the consuming system.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:53:24.165Z","isFirstParty":false,"canonicalSlug":"sha3-512-hex-digest-eb6c5d51"}