{"uid":"cap_jNg40gO6QO_eRRRUGOv84","slug":"blake2b-512-digest-base64-utf-16le-encoding-b9a8453c","name":"Blake2b-512 Digest → Base64 (UTF-16LE Encoding)","description":"Call when an agent needs a blake2b512 digest of utf16le bytes, encoded as base64. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base64-utf16 first.","url":"https://agentshelf.syntexa.ch/v1/digest-blake2b512-base64-utf16?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_MiBRO8mt4nQLViTVUZC-7","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 BLAKE2b-512 cryptographic hash of the UTF-16LE byte representation of a text string and returns the digest encoded as Base64.","exampleAgentPrompt":"Hash the text 'Hello, World!' using BLAKE2b-512 over its UTF-16LE bytes with the key 'mysecretkey' and give me the result as Base64.","exampleUseCases":[{"title":"Integrity fingerprint for exported data","prompt":"I'm exporting a report from our system and need a tamper-evident fingerprint — can you compute a BLAKE2b-512 Base64 hash of this text using UTF-16LE encoding with the key 'audit2024': 'Q3 Revenue: $4,200,000'?"},{"title":"Keyed hash for API message signing","prompt":"Before I send this webhook payload to a partner, I need to sign it — compute a BLAKE2b-512 Base64 digest of 'user_id=42&action=purchase&amount=99.99' encoded as UTF-16LE using the key 'webhook-secret-v1'."},{"title":"Deduplication checksum for Unicode content","prompt":"I have a document in memory and I want a unique BLAKE2b-512 Base64 checksum of it for deduplication — the text is 'Résumé: expérience professionnelle en données' and the key is 'dedup-key'."}],"resultDescription":"Returns a Base64-encoded BLAKE2b-512 digest computed over the UTF-16LE byte encoding of the input text, optionally keyed with the provided key string.","failureModes":["Text or key exceeds maximum allowed length (text: 100,000 chars, key: 512 chars) — returns 4xx validation error","Missing required 'text' field — returns 4xx bad request","Payment not provided or insufficient — returns 402 Payment Required","Service unavailable or transient error — returns 5xx"],"whenToPreferThis":"Choose this endpoint when you specifically need a BLAKE2b-512 hash computed over UTF-16LE byte representation of a string (e.g., for compatibility with Windows/.NET systems that default to UTF-16LE) and want the result as Base64. Use the free sandbox variant (/v1/sandbox/digest-blake2b512-base64-utf16) first; fall back to this paid endpoint when the sandbox is unavailable or rate-limited.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:05.518Z","isFirstParty":false,"canonicalSlug":"blake2b-512-digest-base64-utf-16le-encoding-b9a8453c"}