{"uid":"cap_tU92gBvoZR_vhCBDE1icM","slug":"saylor-innovations-nfts-held-in-a-collection-erc-721-enumerable-b4117d47","name":"Saylor Innovations — NFTs Held in a Collection (ERC-721 Enumerable, Ethereum)","description":"NFTs Held in a Collection (ERC-721 Enumerable) (ethereum). NFTs a wallet holds in a collection (ERC-721 Enumerable): balance and up to 50 token ids. Any of 5 chains.","url":"https://saylorinnovations.com/api/evm/ethereum/nfts/:address/:address2?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_0lk507jjRONGx0Iki2KfL","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the list of NFTs held by a specific wallet address within a given ERC-721 Enumerable collection contract on Ethereum mainnet.","exampleAgentPrompt":"Can you check which NFTs wallet 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B holds in the Bored Ape Yacht Club collection contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D on Ethereum?","exampleUseCases":[{"title":"NFT portfolio audit for a wallet","prompt":"Show me all the NFTs that wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e holds in the Azuki collection contract 0xED5AF388653567Af2F388E6224dC7C4b3241C544 on Ethereum."},{"title":"Verifying NFT-gated access","prompt":"I need to check whether wallet 0x1234567890abcdef1234567890abcdef12345678 owns any tokens in the CloneX ERC-721 collection at contract 0x49cF6f5d44E70224e2E23fDcdd2C053F30aDA28B on Ethereum so I can grant them access to our members area."},{"title":"Tracking collector holdings in a project","prompt":"Which token IDs from the Pudgy Penguins collection contract 0xBd3531dA5CF5857e7CfAA92426877b022e612cf8 does wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 currently hold on Ethereum?"}],"resultDescription":"Returns on-chain data listing the NFT token IDs (and associated metadata if available) held by the specified wallet address within the given ERC-721 Enumerable collection contract on Ethereum mainnet, reflecting current blockchain state.","failureModes":["Invalid or malformed wallet address returns an error","Invalid or non-ERC-721-Enumerable contract address returns an error or empty result","Wallet holds no NFTs in the specified collection — returns empty list","Contract address is not ERC-721 Enumerable (missing enumeration interface) — may fail or return incomplete data","Network congestion or RPC node issues may cause timeouts","Payment not fulfilled — x402 payment required before response is returned"],"whenToPreferThis":"Use this endpoint when you need to enumerate the specific NFTs held by a wallet within a known ERC-721 Enumerable collection on Ethereum mainnet. Prefer this over generic NFT indexers when you want direct on-chain data for a specific contract/wallet pair, especially for NFT-gating, portfolio auditing, or ownership verification workflows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-03T00:48:21.966Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-nfts-held-in-a-collection-erc-721-enumerable-b4117d47"}