{"uid":"cap__PaHf11X9IaX2gwRPDMFw","slug":"agentshelf-syntexa-ch-shake-128-base64-digest-8e1b484f","name":"agentshelf.syntexa.ch SHAKE-128 Base64 Digest","description":"Call when an agent needs a shake128 digest of text, encoded as base64. No network and no LLM. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-shake128-base64 first.","url":"https://agentshelf.syntexa.ch/v1/digest-shake128-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":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_ooAktsoj1oQuU4cdnL19R","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes a SHAKE-128 (XOF) cryptographic digest of input text and returns the result encoded as base64.","exampleAgentPrompt":"Can you compute the SHAKE-128 digest of the text 'Hello, world! This is my message.' and give me the result encoded as base64?","exampleUseCases":[{"title":"Data integrity fingerprinting","prompt":"Hash this JSON payload 'user_id=42&action=login&timestamp=1710000000' with SHAKE-128 and return the base64 digest so I can use it as a fingerprint for tamper detection."},{"title":"Unique key generation from content","prompt":"Take the string 'product-catalog-section-3-variant-blue' and compute its SHAKE-128 base64 digest — I want to use it as a short unique identifier in my database."},{"title":"Verifying document content hash","prompt":"Compute the SHAKE-128 base64 hash of this contract text: 'This agreement is entered into on January 1, 2025 between Party A and Party B...' so I can compare it against the expected checksum."}],"resultDescription":"Returns a base64-encoded SHAKE-128 (extendable output function) digest of the provided input text. The response is a deterministic hash string with no network calls or AI inference involved.","failureModes":["Text or key field missing or empty (minLength:1 constraint violated — returns 4xx validation error)","Text exceeds 100,000 character limit — returns 4xx error","Payment of exactly $0.002 USDC not provided — returns 402 Payment Required","Malformed JSON body — returns 400 Bad Request"],"whenToPreferThis":"Choose this endpoint when you need a SHAKE-128 (XOF) hash specifically encoded as base64 and want a simple, deterministic, low-latency computation with no external dependencies. Prefer the free sandbox endpoint (/v1/sandbox/digest-shake128-base64) for testing. Use this paid endpoint for production use when you need guaranteed availability and can pay $0.002 USDC per call. If you need a different hash algorithm (SHA-224, SHA-3, SHA-512) or encoding (hex, base32, base64url), consider the sibling endpoints on the same host.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:47:49.517Z","isFirstParty":false,"canonicalSlug":"agentshelf-syntexa-ch-shake-128-base64-digest-8e1b484f"}