{"uid":"cap_44AOMs2gYvx5wcRAX-dXo","slug":"sha-512-base64-digest-d4a8e8b7","name":"SHA-512 Base64 Digest","description":"Call when an agent needs a sha512 digest of text, encoded as base64. No network and no LLM. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-base64 first.","url":"https://agentshelf.syntexa.ch/v1/digest-sha512-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":"0.008","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":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_huiSRGPJhWjqLZFiLJOyh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","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 hash of input text and returns it encoded as a Base64 string, with no network calls or LLM involvement.","exampleAgentPrompt":"Can you compute the SHA-512 hash of the text 'Hello, World!' and give me the result encoded as Base64?","exampleUseCases":[{"title":"File integrity verification token","prompt":"Hash this file content string with SHA-512 and give me the Base64 digest so I can store it as an integrity checksum: 'package contents v2.3.1 release build 20240501'"},{"title":"Message authentication digest","prompt":"I need to create a SHA-512 Base64 digest of this API payload before signing it: '{\"user\":\"alice\",\"action\":\"transfer\",\"amount\":100}'"},{"title":"Password hashing for audit log","prompt":"Compute a SHA-512 Base64 hash of the string 'mysecretpassword123' — I need it for an audit log entry."}],"resultDescription":"Returns a Base64-encoded SHA-512 digest of the submitted text. The response is deterministic and computed locally without any external network calls or LLM processing.","failureModes":["Empty or missing 'text' field returns a validation error","Text exceeding 100,000 characters is rejected","Missing or invalid 'key' field may cause authentication failure","Malformed JSON body returns a 400 Bad Request","Payment not fulfilled returns 402 Payment Required"],"whenToPreferThis":"Choose this endpoint when you need a deterministic, server-side SHA-512 hash of text returned as Base64, especially in agentic workflows where you want to avoid local crypto libraries or need a paid, auditable computation call. Prefer the free sandbox endpoint (/v1/sandbox/digest-sha512-base64) first; use this paid endpoint when the sandbox is unavailable or when a production audit trail is required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:46:13.959Z","isFirstParty":false,"canonicalSlug":"sha-512-base64-digest-d4a8e8b7"}