{"slug":"api-onesource-io-api-chain-nft-owner-549e7499","name":"api.onesource.io/api/chain/nft-owner","summary":"Look up the current owner of an ERC721 NFT by token_id via ownerOf (eth_call)","status":"live","indexable":true,"listed_since":"2026-10-25T17:50:12.247212Z","sources":[{"source":"x402_bazaar","external_id":"https://api.onesource.io/api/chain/nft-owner","owner_address":"0x52e29e0d2aa49bfbfc548c0a9f2196f4aa51f3ea","seen_at":"2026-10-26T05:59:04.501056Z","removed_at":null}],"endpoints":[{"url":"https://api.onesource.io/api/chain/nft-owner","host":"api.onesource.io","protocol":"x402","state":"live","last_probe_at":"2026-10-25T17:57:54.416723Z","last_ok_at":"2026-10-25T17:57:54.416723Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"api-onesource-io-2ea28668","name":"api.onesource.io"}],"payment_options":[],"usage":{"source":"x402_bazaar","unique_payers_30d":100,"paid_calls_30d":100,"last_paid_at":"2026-10-25T18:42:46.801Z","reported_at":"2026-10-26T05:59:04.501056Z"},"notice":"Not affiliated with addrbook — claim or request removal."}