{"slug":"402-com-tr-api-x402-hash-b3c533","title":"Compute keccak256 (the EVM/Solidity hash — event topics, function selectors, map","host":"402.com.tr","method":"GET","resource":"https://402.com.tr/api/x402/hash","category":"other","description":"Compute keccak256 (the EVM/Solidity hash — event topics, function selectors, mapping keys) or sha256 of any input. Pass input=text for UTF-8, or 0x-hex to hash raw bytes; algo=keccak256 (default) or sha256. Returns the digest and, for keccak, the 4-byte function selector. Pure compute, no chain, sub","price_listed":0.002,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","pathParams":{},"queryParams":{"algo":"keccak256","input":"Transfer(address,address,uint256)"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"pathParams":{"type":"object"},"queryParams":{"properties":{"algo":{"description":"keccak256 (default) or sha256","type":"string"},"input":{"description":"Text or 0x-hex to hash","type":"string"}},"required":["input"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Compute keccak256 (the EVM/Solidity hash — event topics, function selectors, mapping keys) or sha256 of any input. Pass input=text for UTF-8, or 0x-hex to hash raw bytes; algo=keccak256 (default) or sha256. Returns the digest and, for keccak, the 4-byte function selector. Pure compute, no chain, sub-cent — the commodity hashing call the whole x402 ecosystem hammers, served at the floor. Not financial advice.","last_updated":"2026-10-10T03:00:52.746Z","schemes":["exact"]}