{"uid":"cap_7jZ2gm_szC-V1gaKVcsaQ","slug":"shake256-digest-to-base64-164a63b1","name":"SHAKE256 Digest to Base64","description":"Call when an agent needs a shake256 digest of text, encoded as base64. No network and no LLM. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-shake256-base64 first.","url":"https://agentshelf.syntexa.ch/v1/digest-shake256-base64?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":"0.006","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":"$0.006/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Z2KZTSePNFrxDoPcR3You","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.006","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes a SHAKE256 (extendable-output hash) digest of input text and returns it encoded as base64","exampleAgentPrompt":"Can you hash the text 'Hello, World!' using SHAKE256 and give me the result as a base64 string?","exampleUseCases":[{"title":"Content integrity fingerprinting","prompt":"I need a SHAKE256 base64 digest of this JSON payload so I can verify it hasn't been tampered with: '{\"user\":\"alice\",\"action\":\"transfer\",\"amount\":500}'"},{"title":"Deterministic token generation","prompt":"Hash the string 'session:user42:2024-06-01T12:00:00Z' with SHAKE256 and give me the base64 output so I can use it as a unique session token."},{"title":"Deduplicate text documents","prompt":"Compute a SHAKE256 base64 hash of this article text so I can check whether we've already indexed this exact document before storing it."}],"resultDescription":"A base64-encoded string representing the SHAKE256 (XOF) digest of the provided input text, computed locally without any network calls or LLM inference.","failureModes":["Missing or empty 'text' field returns a validation error","Text exceeding 100,000 characters is rejected","Missing or empty 'key' field may return an error if required","Payment of exactly $0.006 USDC must be provided; insufficient funds result in a 402 response","Malformed request body returns a 400-level error"],"whenToPreferThis":"Use this endpoint when you specifically need a SHAKE256 (extendable-output function) digest encoded as base64. Prefer this over SHA-256 or SHA-3 variants when SHAKE256's variable-length XOF properties are required, or when interoperating with systems that expect base64 encoding specifically. Use the free sandbox endpoint (/v1/sandbox/digest-shake256-base64) for testing before paying the $0.006 USDC fee.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:48:00.542Z","isFirstParty":false,"canonicalSlug":"shake256-digest-to-base64-164a63b1"}