{"uid":"cap_A_rpeCxdle0IVb4flky2v","slug":"synapse-api-arbitrum-nft-holdings-by-owner-af03d401","name":"Synapse API — Arbitrum NFT Holdings by Owner","description":"High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.","url":"https://synapse-api-brown.vercel.app/api/arbitrum/nft/by-owner","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"limit":{"type":"number"},"owner":{"type":"string"},"pageKey":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_HAY610coSk1JpvbNbCq9B","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches all NFTs owned by a specific wallet address on the Arbitrum blockchain network","exampleAgentPrompt":"Can you pull up all the NFTs owned by wallet address 0xAbc123...def456 on Arbitrum, show me the first 20?","exampleUseCases":[{"title":"NFT portfolio audit for a wallet","prompt":"I want to see every NFT held by the wallet 0x1234abcd5678ef90 on Arbitrum — can you list them all, up to 50 results?"},{"title":"Check NFT ownership before a trade","prompt":"Before I send this offer, can you confirm what NFTs wallet 0xdeadbeef99887766 currently holds on Arbitrum?"},{"title":"Paginate through large NFT collection","prompt":"I checked the first 25 NFTs for wallet 0xaabbccdd11223344 on Arbitrum — can you fetch the next page using the pageKey from before?"}],"resultDescription":"Returns a paginated list of NFTs owned by the specified wallet on the Arbitrum network, including token IDs, contract addresses, NFT metadata (name, image, traits), and a pageKey for fetching subsequent pages.","failureModes":["Invalid or malformed owner wallet address returns an error or empty result","Non-existent address returns an empty NFT list","Rate limiting or service unavailability returns a 429 or 5xx error","pageKey from a different query context returns invalid pagination results","Limit value out of accepted range may cause a validation error"],"whenToPreferThis":"Use this endpoint when you need to enumerate all NFT holdings for a specific wallet on the Arbitrum network specifically. It supports pagination for wallets with large collections and is pay-per-call at $0.01 USDC, making it cost-effective for spot lookups. Prefer this over general blockchain explorers when you need structured, machine-readable NFT data programmatically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:46:23.781Z","isFirstParty":false}