{"slug":"x402-settlement-review-27f109d9","name":"x402 Settlement Review","summary":"x402 Settlement Review: Replay and Double Charge — Reviews pasted seller-side x402 code that accepts the PAYMENT-SIGNATURE header, talks to the facilitator and delivers the goods (the cash register), for the silent failures that double-charge a buyer, hand the goods to a stranger or bill the seller. It flags an expiry check that runs before the nonce lookup, a repeat path that delivers without proof the chain observer lacks, a repeat window taken from the buyer's validBefore instead of the sell…","status":"live","indexable":true,"listed_since":"2026-10-25T17:51:28.998247Z","sources":[{"source":"x402_bazaar","external_id":"https://api.aiskills402.com/v1/skills/x402-settlement-review/file","owner_address":"0x8e37022edcf0f21cf3c9f93fee9d4d32519f36f4","seen_at":"2026-10-26T22:03:28.356151Z","removed_at":null}],"endpoints":[{"url":"https://api.aiskills402.com/v1/skills/x402-settlement-review/file","host":"api.aiskills402.com","protocol":"x402","state":"live","last_probe_at":"2026-10-26T07:08:04.854899Z","last_ok_at":"2026-10-26T07:08:04.854899Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"api-aiskills402-com-62d86cc3","name":"api.aiskills402.com"}],"payment_options":[{"endpoint_url":"https://api.aiskills402.com/v1/skills/x402-settlement-review/file","network":"eip155:8453","scheme":"exact","rail":"exact","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","coin":"USDC","asset_label":"USD Coin","amount":"10000","pay_to":"0x8e37022edcf0f21cf3c9f93fee9d4d32519f36f4","observed_at":"2026-10-26T07:08:04.854899Z"}],"usage":{"source":"x402_bazaar","unique_payers_30d":3,"paid_calls_30d":3,"last_paid_at":"2026-10-23T13:42:13.448Z","reported_at":"2026-10-26T22:03:28.356151Z"},"assessment":{"method":"2026.10.1","checks":[{"id":"answers","state":"pass","reason":"Answered a check 7 hours ago."},{"id":"owner","state":"fail","reason":"No one has proven control of its domain or of the wallet it is paid at."},{"id":"track_record","state":"fail","reason":"Listed for 0 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"3 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed."},{"id":"clean_scan","state":"not_applicable","reason":"Not an MCP server."}],"passed":1,"applicable":4,"contradicted":false,"computed_at":"2026-10-26T14:49:45.954637Z"},"identity":{"endpoint_domains":["aiskills402.com"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0,"identity_checks":[],"wallet_attestations":[]},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}