{"slug":"agentshelf-syntexa-ch-v1-base-contract-info-27aa38","title":"Call when an agent needs is_contract, bytecode size and hash, EIP-1967 proxy imp","host":"agentshelf.syntexa.ch","method":"POST","resource":"https://agentshelf.syntexa.ch/v1/base-contract-info","category":"code","description":"Call when an agent needs is_contract, bytecode size and hash, EIP-1967 proxy implementation, and owner() for one Base address. owner_renounced is true for the zero address or the dead address. An EOA is is_contract false. Read-only. Send JSON {\"address\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\"}.","price_listed":0.005,"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":{"body":{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"additionalProperties":false,"examples":[{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}],"properties":{"address":{"description":"Account on Base mainnet. Example: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913. Returns is_contract, bytecode size and hash, EIP-1967 implementation, and owner() when present. An EOA is is_contract false.","examples":["0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"],"type":"string"}},"required":["address"],"type":"object"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"additionalProperties":false,"examples":[{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","beacon":null,"billed":true,"bytecode_bytes":2,"bytecode_hash":"0x1111111111111111111111111111111111111111111111111111111111111111","implementation":"0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045","is_contract":true,"network":"eip155:8453","ok":true,"owner":"0x0000000000000000000000000000000000000000","owner_renounced":true,"receipt_id":"rcpt_01EXAMPLE000000000000000","upgradeable_proxy":true,"warnings":[]}],"properties":{"address":{"examples":["0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"],"type":"string"},"beacon":{"examples":[null],"type":["string","null"]},"billed":{"examples":[true],"type":"boolean"},"bytecode_bytes":{"examples":[2],"minimum":0,"type":"integer"},"bytecode_hash":{"examples":["0x1111111111111111111111111111111111111111111111111111111111111111"],"type":["string","null"]},"implementation":{"examples":["0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"],"type":["string","null"]},"is_contract":{"examples":[true],"type":"boolean"},"network":{"const":"eip155:8453","examples":["eip155:8453"],"type":"string"},"ok":{"const":true,"examples":[true],"type":"boolean"},"owner":{"examples":["0x0000000000000000000000000000000000000000"],"type":["string","null"]},"owner_renounced":{"examples":[true],"type":["boolean","null"]},"receipt_id":{"examples":["rcpt_01EXAMPLE000000000000000"],"type":"string"},"upgradeable_proxy":{"examples":[true],"type":"boolean"},"warnings":{"default":[],"examples":[[]],"items":{"type":"string"},"type":"array"}},"required":["ok","receipt_id","billed","address","network","is_contract","bytecode_bytes","bytecode_hash","upgradeable_proxy","implementation","beacon","owner","owner_renounced"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Call when an agent needs is_contract, bytecode size and hash, EIP-1967 proxy implementation, and owner() for one Base address. owner_renounced is true for the zero address or the dead address. An EOA is is_contract false. Read-only. Send JSON {\"address\":\"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913\"}. Exact $0.005 USDC on Base. Try unpaid POST /v1/sandbox/base-contract-info first.","last_updated":"2026-10-11T10:14:21.56Z","schemes":["exact"]}