{"uid":"cap_wJ6jHBGw8OsyY6wcy7mBn","slug":"sha-256-base64-digest-agentshelf-syntexa-ch-7a5f9d15","name":"SHA-256 Base64 Digest (agentshelf.syntexa.ch)","description":"Call when an agent needs a sha256 digest of text, encoded as base64. No network and no LLM. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha256-base64 first.","url":"https://agentshelf.syntexa.ch/v1/digest-sha256-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_f6y1iGk-t9gk6xgwGDttA","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 SHA-256 cryptographic hash of input text and returns the digest encoded as a Base64 string, with no network calls or LLM involvement.","exampleAgentPrompt":"Can you compute the SHA-256 hash of the text 'Hello, world! This is my document content.' and give me the result as Base64?","exampleUseCases":[{"title":"Content deduplication key generation","prompt":"Hash this product description with SHA-256 and give me the base64 digest so I can use it as a deduplication key: 'Premium wireless headphones with 40-hour battery life and active noise cancellation.'"},{"title":"Data integrity fingerprinting","prompt":"I need to create a SHA-256 base64 fingerprint of this JSON payload before storing it: '{\"userId\":\"abc123\",\"amount\":49.99,\"currency\":\"USD\"}' — can you generate that hash?"},{"title":"Password or token derivation check","prompt":"Take the string 'my-secret-api-key-v2' and compute its SHA-256 hash encoded as base64 so I can compare it against a stored reference value."}],"resultDescription":"A SHA-256 hash of the provided text, returned as a Base64-encoded string. The output is deterministic and repeatable for the same input. No additional metadata or network activity is involved.","failureModes":["Empty or missing 'text' field returns a validation error","Text exceeding 100,000 characters is rejected","Invalid or missing payment (x402) results in a 402 Payment Required error","Malformed request body returns a 400 error"],"whenToPreferThis":"Choose this endpoint when you need a SHA-256 hash specifically encoded as Base64 (rather than hex) and want a guaranteed offline, deterministic computation with no LLM or external network involvement. Prefer this over building your own hashing if you need a simple pay-per-use cryptographic primitive in an agent workflow. Use the free sandbox endpoint (POST /v1/sandbox/digest-sha256-base64) first to validate your integration before incurring the $0.01 USDC cost.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:48:01.255Z","isFirstParty":false,"canonicalSlug":"sha-256-base64-digest-agentshelf-syntexa-ch-7a5f9d15"}