{"uid":"cap_Y4SnSdHTN_j40qZMqX0pV","slug":"sha-512-256-digest-base64url-utf-16le-via-agentshelf-syntexa-ch-0f98962c","name":"SHA-512/256 Digest (Base64URL, UTF-16LE) via agentshelf.syntexa.ch","description":"Call when an agent needs a sha512-256 digest of utf16le bytes, encoded as base64url. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-base64url-utf16 first.","url":"https://agentshelf.syntexa.ch/v1/digest-sha512-256-base64url-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":"0.009","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":"$0.009/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_5gpz3xNwKSKsfSc8J5V2_","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.009","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes a SHA-512/256 hash of a text string encoded as UTF-16LE bytes, returning the digest as a base64url string.","exampleAgentPrompt":"Compute the SHA-512/256 hash of the text 'Hello, World!' treating it as UTF-16LE bytes and give me the result encoded as base64url.","exampleUseCases":[{"title":"Document integrity fingerprinting","prompt":"I need a SHA-512/256 digest of this contract text 'AGREEMENT dated 2024-01-01 between Party A and Party B...' encoded as UTF-16LE and returned as base64url so I can use it as a tamper-evident fingerprint."},{"title":"Hashing user-submitted content for deduplication","prompt":"Can you hash this user comment 'Great product, loved the experience!' using SHA-512/256 over its UTF-16LE bytes and give me the base64url result so I can check for duplicate submissions?"},{"title":"Generating a compact key from a passphrase","prompt":"Take the passphrase 'SunsetRiver42!' and produce its SHA-512/256 digest as base64url using UTF-16LE encoding — I want a compact, URL-safe hash to use as a derived key identifier."}],"resultDescription":"Returns a base64url-encoded SHA-512/256 digest computed over the UTF-16LE byte representation of the input text string. The output is a compact, URL-safe cryptographic hash suitable for integrity checking, deduplication, or key derivation.","failureModes":["Empty or missing 'text' field returns a validation error","Text exceeding 100,000 characters is rejected","Missing or empty 'key' field may cause authentication failure","Payment not provided or insufficient USDC balance returns a 402 error","Network timeout for very large text inputs near the character limit"],"whenToPreferThis":"Choose this endpoint when you specifically need a SHA-512/256 digest of text bytes interpreted in UTF-16LE encoding (common for Windows-originated strings or COM/NTFS contexts) with base64url output. Prefer the free sandbox endpoint (/v1/sandbox/digest-sha512-256-base64url-utf16) for testing. Use this paid endpoint when the sandbox is unavailable or when operating in production with x402 payment flow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:22.427Z","isFirstParty":false,"canonicalSlug":"sha-512-256-digest-base64url-utf-16le-via-agentshelf-syntexa-ch-0f98962c"}