{"uid":"cap_3ZioUUrgUGFTgvYOqJyNC","slug":"sha-512-256-digest-as-base64-0aebd6a8","name":"SHA-512/256 Digest as Base64","description":"Call when an agent needs a sha512-256 digest of text, encoded as base64. No network and no LLM. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-base64 first.","url":"https://agentshelf.syntexa.ch/v1/digest-sha512-256-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":"0.006","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_B2PYm2ob5toiASd_SicBc","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 SHA-512/256 cryptographic hash of input text and returns the digest encoded as base64","exampleAgentPrompt":"Hash the text 'Hello, world!' using SHA-512/256 and give me the result as a base64 string.","exampleUseCases":[{"title":"Content integrity fingerprinting","prompt":"Take this article text and give me its SHA-512/256 hash in base64 so I can use it as a fingerprint to detect any future changes."},{"title":"Message authentication code generation","prompt":"Hash this API payload 'user_id=42&action=purchase&amount=99.99' with SHA-512/256 and return the base64 digest so I can include it as a message signature."},{"title":"Deduplication key for stored documents","prompt":"Give me the SHA-512/256 base64 hash of this contract text so I can use it as a deduplication key before storing it in the database."}],"resultDescription":"Returns a base64-encoded SHA-512/256 cryptographic digest of the submitted text. The output is a fixed-length base64 string representing the 256-bit hash. No network calls or LLM inference are involved — the result is deterministic and reproducible given the same input.","failureModes":["Missing or empty 'text' field returns a validation error","Text exceeding 100,000 characters is rejected","Missing or invalid API key returns an authentication error","Payment not processed results in a 402 Payment Required response"],"whenToPreferThis":"Choose this endpoint when you need a SHA-512/256 hash specifically encoded as base64 (not hex or base32). SHA-512/256 offers stronger collision resistance than SHA-256 while producing a 256-bit output, making it suitable for security-sensitive contexts. Prefer the free sandbox endpoint (/v1/sandbox/digest-sha512-256-base64) for testing; use this paid endpoint for production workloads. If you need hex or base32 encoding, use the sibling endpoints on the same host.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:47:30.677Z","isFirstParty":false,"canonicalSlug":"sha-512-256-digest-as-base64-0aebd6a8"}