{"slug":"agentshelf-syntexa-ch-v1-eth-nft-owner-d54abe73","name":"agentshelf.syntexa.ch/v1/eth-nft-owner","summary":"Call when an agent needs the ERC-721 owner of token_id on an Ethereum contract, or an ERC-1155 balanceOf(owner, id) when standard is erc1155. A missing token errors. Read-only. No spend. Send JSON {\"contract\":\"0x1111111111111111111111111111111111111111\",\"token_id\":\"1\"}. Exact $0.003 USDC on Base. Try unpaid POST /v1/sandbox/eth-nft-owner first.","status":"live","indexable":true,"listed_since":"2026-10-25T17:57:19.715475Z","sources":[{"source":"x402_bazaar","external_id":"https://agentshelf.syntexa.ch/v1/eth-nft-owner","owner_address":"0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a38","seen_at":"2026-10-27T21:48:32.169981Z","removed_at":null}],"endpoints":[{"url":"https://agentshelf.syntexa.ch/v1/eth-nft-owner","host":"agentshelf.syntexa.ch","protocol":"x402","state":"live","last_probe_at":"2026-10-27T11:31:46.836194Z","last_ok_at":"2026-10-27T11:31:46.836194Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"agentshelf-syntexa-ch-0a55f32e","name":"agentshelf.syntexa.ch"}],"payment_options":[{"endpoint_url":"https://agentshelf.syntexa.ch/v1/eth-nft-owner","network":"eip155:8453","scheme":"exact","rail":"exact","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","coin":"USDC","asset_label":"USD Coin","amount":"3000","pay_to":"0x1d61faa032d3f40d9c470d2bf3a3f53de0e55a38","observed_at":"2026-10-27T11:31:46.836194Z"}],"usage":{"source":"x402_bazaar","unique_payers_30d":1,"paid_calls_30d":1,"last_paid_at":"2026-10-20T07:39:10.805Z","reported_at":"2026-10-27T21:48:32.169981Z"},"assessment":{"method":"2026.10.2","checks":[{"id":"answers","state":"pass","reason":"Answered a check within the last hour."},{"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 1 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"1 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":"2026-10-27T11:32:38.094540Z"},"identity":{"endpoint_domains":["syntexa.ch"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0,"identity_checks":[],"wallet_attestations":[],"human_backings":[]},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}