{"uid":"cap_jGBIaMLhZWkTO1piidN5n","slug":"blake2b-512-hex-digest-latin-1-agentshelf-syntexa-ch-f5daffcc","name":"BLAKE2b-512 Hex Digest (Latin-1) — agentshelf.syntexa.ch","description":"Call when an agent needs a blake2b512 digest of latin1 bytes, encoded as hex. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-hex-latin1 first.","url":"https://agentshelf.syntexa.ch/v1/digest-blake2b512-hex-latin1?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":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_U5B64tlLeGIYULD99rGFi","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","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 digest of Latin-1-encoded text bytes and returns the result as a lowercase hex string.","exampleAgentPrompt":"Compute a BLAKE2b-512 hex digest of the Latin-1 text 'Hello, world!' using the key 'mysecret'.","exampleUseCases":[{"title":"Integrity fingerprint for stored content","prompt":"Hash this document text 'Invoice #4821 for $500 due 2024-06-01' with BLAKE2b-512 and give me the hex digest so I can store it as an integrity fingerprint."},{"title":"Keyed MAC for API message signing","prompt":"I need a keyed BLAKE2b-512 hex digest of the message 'user_id=42&action=transfer' using the secret key 'api-signing-key-xyz' to sign my API request payload."},{"title":"Deduplication hash for Latin-1 data","prompt":"Generate a BLAKE2b-512 hex hash for the Latin-1 text 'Ñoño café résumé' so I can use it as a deduplication key in my database."}],"resultDescription":"A JSON response containing the BLAKE2b-512 cryptographic digest of the provided Latin-1 text, returned as a lowercase hexadecimal string (128 hex characters representing 64 bytes).","failureModes":["Text or key contains non-Latin-1 characters (e.g. multi-byte Unicode above U+00FF) — may produce an error or unexpected digest","Key exceeds 512-character maximum — returns a validation error","Text exceeds 100,000-character limit — returns a validation error","Empty text or key (below minLength of 1) — returns a validation error","Payment failure or insufficient USDC balance — HTTP 402 or payment-related error"],"whenToPreferThis":"Use this endpoint when you need a BLAKE2b-512 digest specifically over Latin-1 byte-encoded text returned as hex, especially when operating within an x402-payment-enabled agent pipeline. Prefer the free sandbox variant (/v1/sandbox/digest-blake2b512-hex-latin1) for testing. Choose this over SHA-256 or MD5 endpoints when BLAKE2b's speed and security properties are required, or when downstream systems expect a BLAKE2b-512 hex output.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T06:50:04.815Z","isFirstParty":false,"canonicalSlug":"blake2b-512-hex-digest-latin-1-agentshelf-syntexa-ch-f5daffcc"}