{"uid":"cap_QuglEtuK0s_uZ6jRYC7pq","slug":"sha3-256-hash-digest-api-08915ce2","name":"SHA3-256 Hash Digest API","description":"SHA3-256 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network","url":"https://twin.unykorn.org/hash-sha3-256?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"params":{"type":"object","properties":{"hex":{"type":"string","pattern":"^0x[0-9a-fA-F]*$"},"text":{"type":"string","maxLength":49152}}}}},"responseSchema":{"type":"json","example":{"ok":true,"type":"hash-sha3-256","receipt":{"tx_hash":"0x<64hex>","amount_usd":0.001,"receipt_id":"g402-<16hex>"},"generated_at":"<iso8601>"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_BGK4BkMtcPKS785IWV_SS","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes a SHA3-256 cryptographic digest from plain text or raw hex-encoded bytes","exampleAgentPrompt":"Can you compute the SHA3-256 hash of the text 'Hello, world!' for me?","exampleUseCases":[{"title":"Data integrity checksum for a file","prompt":"Hash this raw file content as hex bytes so I can use it as a SHA3-256 integrity checksum: 0x48656c6c6f20576f726c64"},{"title":"Deterministic content fingerprint","prompt":"Give me the SHA3-256 digest of the string 'user:alice@example.com:2024-06-01' — I need a stable fingerprint to use as a content ID."},{"title":"Smart contract input hashing","prompt":"Compute the SHA3-256 hash of this hex-encoded calldata 0xabcdef1234567890 so I can verify it matches the on-chain digest before submitting the transaction."}],"resultDescription":"Returns a JSON object with ok:true, the hash type ('hash-sha3-256'), and a receipt containing the blockchain transaction hash, USD amount paid, and a unique receipt ID, along with a generated_at ISO8601 timestamp.","failureModes":["Invalid hex format (not matching ^0x[0-9a-fA-F]*$) returns a validation error","Text input exceeding 49152 characters is rejected","Missing both hex and text parameters may return an error","Payment failure or insufficient funds results in a 402 response","Malformed JSON request body causes a parsing error"],"whenToPreferThis":"Use this endpoint when you need a SHA3-256 (not SHA2-256 or Keccak-256) digest of either plain text or raw hex-encoded bytes, especially in agentic or blockchain-adjacent workflows where on-chain payment receipts are required or useful for auditability. Prefer it over local hashing when a receipted, auditable proof-of-computation is needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T18:55:10.926Z","isFirstParty":false,"canonicalSlug":"sha3-256-hash-digest-api-08915ce2"}