{"slug":"optimism-contract-check-9f9356c0","name":"Optimism contract check","summary":"Check whether a 0x address on Optimism is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.","status":"live","indexable":true,"listed_since":"2026-10-25T17:52:23.517383Z","sources":[{"source":"x402_bazaar","external_id":"https://agent-data-tools.revmesh2074.workers.dev/op/is-contract","owner_address":"0x2074c40346ae2a90e0e4a391bcee6f16bf5277f5","seen_at":"2026-10-26T06:00:45.958101Z","removed_at":null}],"endpoints":[{"url":"https://agent-data-tools.revmesh2074.workers.dev/op/is-contract","host":"agent-data-tools.revmesh2074.workers.dev","protocol":"x402","state":"live","last_probe_at":"2026-10-26T06:20:44.070134Z","last_ok_at":"2026-10-26T06:20:44.070134Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"agent-data-tools-revmesh2074-workers-dev-090312c0","name":"agent-data-tools.revmesh2074.workers.dev"}],"payment_options":[{"endpoint_url":"https://agent-data-tools.revmesh2074.workers.dev/op/is-contract","network":"eip155:8453","scheme":"exact","rail":"exact","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","coin":"USDC","asset_label":"USD Coin","amount":"10000","pay_to":"0x2074c40346ae2a90e0e4a391bcee6f16bf5277f5","observed_at":"2026-10-26T06:20:44.070134Z"},{"endpoint_url":"https://agent-data-tools.revmesh2074.workers.dev/op/is-contract","network":"eip155:137","scheme":"exact","rail":"exact","asset":"0x3c499c542cef5e3811e1192ce70d8cc03d5c3359","coin":"USDC","asset_label":"USD Coin","amount":"10000","pay_to":"0x2074c40346ae2a90e0e4a391bcee6f16bf5277f5","observed_at":"2026-10-26T06:20:44.070134Z"}],"usage":{"source":"x402_bazaar","unique_payers_30d":2,"paid_calls_30d":3,"last_paid_at":"2026-10-22T18:21:45.238Z","reported_at":"2026-10-26T06:00:45.958101Z"},"notice":"Not affiliated with addrbook — claim or request removal."}