{"uid":"cap_WJR_2owtIPVBdLKaJkIY_","slug":"blake2s-256-base64-digest-8403e15e","name":"BLAKE2s-256 Base64 Digest","description":"Call when an agent needs a blake2s256 digest of text, encoded as base64. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base64 first.","url":"https://agentshelf.syntexa.ch/v1/digest-blake2s256-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":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_GvVPmDGWhC2MOMC1aAFcv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes a BLAKE2s-256 cryptographic hash of input text and returns it encoded as a base64 string","exampleAgentPrompt":"Compute the BLAKE2s-256 hash of the text 'Hello, world!' and give me the result as a base64 string.","exampleUseCases":[{"title":"Content integrity fingerprinting","prompt":"Hash the string 'user_session_token_abc123' with BLAKE2s-256 and give me the base64 digest so I can use it as a short integrity fingerprint."},{"title":"Keyed MAC generation for API payload","prompt":"I need a keyed BLAKE2s-256 digest of the text 'order_id=9921&amount=50.00' using the key 'mysecretkey' — return it as base64 so I can attach it as a message authentication code."},{"title":"Deterministic document identifier","prompt":"Generate a BLAKE2s-256 base64 hash of this document excerpt: 'The quick brown fox jumps over the lazy dog' — I want to use it as a stable, short document ID."}],"resultDescription":"Returns a base64-encoded BLAKE2s-256 cryptographic digest of the provided text. The result is a deterministic, fixed-length hash string computed entirely locally (no network calls or LLM inference involved).","failureModes":["Empty or missing text field returns validation error","Key or text exceeding maximum length (512 and 100000 chars respectively) results in rejection","Malformed request body returns 400-level error","Payment failure or insufficient USDC balance returns 402 Payment Required"],"whenToPreferThis":"Choose this endpoint when you need a compact, secure BLAKE2s-256 hash of text output as base64 specifically — ideal when downstream systems expect base64-encoded digests rather than hex or base32. Prefer the free sandbox variant (/v1/sandbox/digest-blake2s256-base64) for testing. Use this paid endpoint for production workloads where reliability and guaranteed processing matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:46:25.878Z","isFirstParty":false,"canonicalSlug":"blake2s-256-base64-digest-8403e15e"}