{"slug":"quickbuild-quynguyenbac-workers-dev-api-base-token-3b7294","title":"Inspect a token or any address on Base mainnet","host":"quickbuild.quynguyenbac.workers.dev","method":"GET","resource":"https://quickbuild.quynguyenbac.workers.dev/api/base/token","category":"market","description":"Inspect a token or any address on Base mainnet: contract vs EOA (incl. EIP-7702 delegation), bytecode size, ERC-20 name/symbol/decimals/totalSupply (raw and formatted; bytes32 symbols handled), proxy implementation (EIP-1967, beacon, ZeppelinOS/FiatToken), whether it is a well-known Base token (guar","price_listed":0.002,"price_asked":0.002,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":32,"reported_calls_30d":0,"reported_payers_30d":0,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"},"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":"Token / contract address on Base (0x + 40 hex). Optional: defaults to USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","type":"string"},"holder":{"description":"Optional address whose balance of this token to include.","type":"string"}},"required":[],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"accountType":{"type":"string"},"address":{"type":"string"},"codeSizeBytes":{"type":"integer"},"decimals":{"type":["integer","null"]},"holder":{"type":"object"},"isContract":{"type":"boolean"},"isErc20":{"type":"boolean"},"name":{"type":["string","null"]},"proxy":{"type":["object","null"]},"symbol":{"type":["string","null"]},"totalSupply":{"properties":{"formatted":{"type":["string","null"]},"raw":{"type":"string"}},"type":["object","null"]},"wellKnown":{"type":"boolean"}},"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-21","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.002,"price_match":true,"latency_ms":32,"error":null}],"description_full":"Inspect a token or any address on Base mainnet: contract vs EOA (incl. EIP-7702 delegation), bytecode size, ERC-20 name/symbol/decimals/totalSupply (raw and formatted; bytes32 symbols handled), proxy implementation (EIP-1967, beacon, ZeppelinOS/FiatToken), whether it is a well-known Base token (guards against spoofed symbols), and optionally the balance of `holder`. Read live from public Base RPC; metadata cached 1 h. All params optional: defaults to USDC on Base. Invalid input = 400, never...","last_updated":"2026-10-21T13:36:01.6Z","schemes":["exact"]}