{"slug":"saylorinnovations-com-api-chain-function-selectors-23dda6","title":"Bytecode selector scan for 16 EVM chains","host":"saylorinnovations.com","method":"GET","resource":"https://saylorinnovations.com/api/chain/function-selectors","category":"other","description":"Bytecode selector scan for 16 EVM chains: known functions found and capability flags such as mint, pause, blacklist, permit, fees and trading switch.","price_listed":0.01,"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":["eip155:137","eip155:42161","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"address":"0xdAC17F958D2ee523a2206206994597C13D831ec7","chain":"ethereum"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"address":{"description":"the contract address to scan","type":"string"},"chain":{"description":"chain name (ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, gnosis, linea, scroll, mantle, blast, sonic, celo, berachain, unichain) or chain id","type":"string"}},"required":["chain","address"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"address":{"description":"contract scanned","type":"string"},"capabilities":{"description":"true or false hints derived from the matches","type":["object","null"]},"chain":{"description":"the chain name that was queried","type":"string"},"chain_id":{"description":"EIP-155 chain id of that network","type":"number"},"code_size_bytes":{"description":"size of the deployed code","type":"number"},"known":{"description":"matched selectors with signatures","items":{"properties":{"selector":{"description":"4-byte selector","type":["string","null"]},"signature":{"description":"matched function signature","type":["string","null"]}},"type":"object"},"type":["array","null"]},"known_selectors":{"description":"selectors matched to a known signature","type":"number"},"looks_like_proxy":{"description":"true when the code looks like a small proxy","type":"boolean"},"note":{"description":"plain-language reading of the result","type":"string"},"selectors_found":{"description":"distinct 4-byte selectors in the bytecode","type":"number"},"source":{"description":"where the data was read from or how it was computed","type":"string"},"unknown_selectors":{"description":"selectors not in the list","type":"number"}},"required":["chain","chain_id","address","selectors_found","known","capabilities","note","source"],"type":"object"},"type":{"const":"json","type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Bytecode selector scan for 16 EVM chains: known functions found and capability flags such as mint, pause, blacklist, permit, fees and trading switch.","last_updated":"2026-10-21T04:11:33.084Z","schemes":["exact"]}