{"uid":"cap_fnf4Y_lOIQwGPr9Bkawxo","slug":"propeller-rocks-keccak256-hash-d1caf80f","name":"propeller.rocks Keccak256 Hash","description":"keccak256 hash of a utf8 or hex string","url":"https://propeller.rocks/keccak256","method":"GET","headers":{},"bodySchema":null,"responseSchema":null,"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_fQRhmV3ZItU8vkUgOcAPB","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the keccak256 hash of a UTF-8 string or hex-encoded byte string","exampleAgentPrompt":"Can you compute the keccak256 hash of the UTF-8 string 'Hello, World!'?","exampleUseCases":null,"resultDescription":"Returns the keccak256 hash (32-byte hex digest) of the provided UTF-8 or hex input string, suitable for use in Ethereum smart contracts, signature verification, or general cryptographic purposes.","failureModes":["Invalid or malformed hex input returns an error","Empty input may return zero hash or error","Network timeout for slow connections","Payment failure if USDC balance insufficient"],"whenToPreferThis":"Use this endpoint when you need a keccak256 hash of a string or hex value — especially in Ethereum/EVM/Solidity contexts where keccak256 is the canonical hash function. Prefer this over SHA-256 or other hashes when working with smart contracts, ABI encoding, event topic0 computation, or any Ethereum-native cryptographic operation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:43:12.790Z","isFirstParty":false}