{"paid_route":"/api/v1/paid/payer-profile","method":"POST","price":"$0.01","what_you_get":"The public x402 payment footprint of a Base address that paid you — payments and distinct recipients in the window, first/last seen, cadence (payments per day, spacing regularity, modal hours), whether it has ever sent a native transaction, what this shop has seen of it — and a class with the numbers it rests on and a confidence.","input_example":{"address":"0xc9c7b38c0942914fc8ea12063bc92dcd3b581670","window_days":30},"input_schema":{"type":"object","required":["address"],"properties":{"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$","description":"The Base address that paid you","examples":["0xc9c7b38C0942914fC8EA12063BC92dcd3b581670"]},"window_days":{"type":"integer","minimum":1,"maximum":90,"default":30,"description":"How far back to read, in days"}},"additionalProperties":false},"output_example":{"address":"0xc9c7b38c0942914fc8ea12063bc92dcd3b581670","network":"eip155:8453","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","window_days":30,"window_start":"2026-08-11T00:21:11.758Z","payments":811,"distinct_recipients":346,"total_usdc":39.2905,"first_seen":"2026-09-04T09:23:49.000Z","last_seen":"2026-09-09T19:02:35.000Z","cadence":{"payments_per_day":27.033,"active_days":6,"span_days":5.4,"regularity":{"inter_payment_gap_cv":5.091,"note":"coefficient of variation of the gaps between consecutive payments; lower is more evenly spaced; null with fewer than 3 payments"},"modal_hours_utc":[{"hour_utc":19,"payments":207},{"hour_utc":12,"payments":202},{"hour_utc":1,"payments":193}]},"native_tx_count":0,"native_tx_count_is_lower_bound":false,"top_recipients":[{"recipient":"0x4466d4a84b7c49a6a094ec6eef4a0712d6dd125e","payments":17},{"recipient":"0x367f1b3d8ca90d1e087481a9a40d585bf3451a03","payments":12},{"recipient":"0xa6145f14b197f28a2c5786c6f2e4456f9484f0fd","payments":12},{"recipient":"0x68e3e7822cf83c824cf9606ec999b5e8a93c85b5","payments":11},{"recipient":"0x169b9519078039e546c6c2d1030cf63a569283d1","payments":11}],"payments_per_recipient":2.34,"class":"paying_index","confidence":"high","evidence":{"payments":811,"distinct_recipients":346,"span_days":5.4,"active_days":6,"native_tx_count":0,"payments_per_day":27.033},"reason":"346 distinct recipients on 6 distinct days across 5.4 days, no native transaction ever sent","note":"class is a heuristic over public on-chain payment traces (USDC transfers from this address on Base), not an identity claim; the same wallet can be operated by anyone and can change behaviour tomorrow.","reading_rule":"the first one to three payers of a new listing are usually verifiers paying to look; a single repeat about six days later is a verifier cadence, not a returning customer; many calls per payer is the customer signal","coverage":{"complete":true,"note":"every outbound USDC transfer in the window was read","explorer_requests":18,"explorer_retries":0,"explorer_rate_limited":0,"explorer_host_failures":0,"upstream_ms":12328},"computed_at":"2026-09-10T00:21:24.086Z","our_observation":{"seen":true,"classification":"known_sweep","classes":{"known_sweep":8,"real":1},"payments":9,"routes_bought":9,"first_seen":"2026-09-05T01:01:56.354Z","last_seen":"2026-09-09T12:09:45.609Z","returned_after_1h":true},"cache":"miss","generated_at":"2026-09-10T00:21:24.086Z"},"reading_rule":"the first one to three payers of a new listing are usually verifiers paying to look; a single repeat about six days later is a verifier cadence, not a returning customer; many calls per payer is the customer signal","note":"This example is a machine wallet that buys catalogue listings on a timetable, captured on 2026-09-10. class is a heuristic over public on-chain payment traces (USDC transfers from this address on Base), not an identity claim; the same wallet can be operated by anyone and can change behaviour tomorrow. Classes: /api/v1/payer-profile/classes."}