{"uid":"cap_ND4rrEqKzkmf2XVuB6RGH","slug":"sha3-512-base64url-digest-d18428a3","name":"SHA3-512 Base64URL Digest","description":"Call when an agent needs a sha3-512 digest of text, encoded as base64url. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-base64url first.","url":"https://agentshelf.syntexa.ch/v1/digest-sha3-512-base64url?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":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_DxwA_M2Z0YZ1r2GQaGHPL","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","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 encoded as base64url, with no network calls or LLM involvement.","exampleAgentPrompt":"Hash this text using SHA3-512 and give me the result as base64url: 'Hello, world! This is my document content.'","exampleUseCases":[{"title":"Document integrity fingerprinting","prompt":"I need a SHA3-512 hash of this contract text encoded as base64url so I can use it as a tamper-evident fingerprint: 'Agreement dated 2024-01-01 between Party A and Party B for services rendered.'"},{"title":"API request signing preparation","prompt":"Compute the SHA3-512 base64url digest of this API payload string so I can include it in a signature header: '{\"user_id\":\"abc123\",\"action\":\"transfer\",\"amount\":500}'"},{"title":"Password hashing before storage","prompt":"Take this passphrase and give me its SHA3-512 hash encoded as base64url — I need it for a custom credential store: 'correct-horse-battery-staple-2024'"}],"resultDescription":"Returns a SHA3-512 cryptographic digest of the submitted text, encoded as a base64url string. The output is deterministic — identical input always yields the same hash. No network requests are made during computation and no LLM is involved.","failureModes":["Empty or missing 'text' field returns a validation error","Text exceeding 100,000 characters is rejected","Missing or empty 'key' field causes request failure","Payment of exactly $0.003 USDC must be provided or request is rejected with 402"],"whenToPreferThis":"Use this endpoint when you need a SHA3-512 hash specifically encoded as base64url (not hex or plain base64), and want a deterministic, offline-style computation with no external network calls. Prefer the free sandbox endpoint POST /v1/sandbox/digest-sha3-512-base64url during development. Choose this paid version for production workflows where auditability or guaranteed availability matters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:47:16.561Z","isFirstParty":false,"canonicalSlug":"sha3-512-base64url-digest-d18428a3"}