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Synapse API — Arbitrum NFT Holdings by Owner
x402
Synapse API — Arbitrum NFT Holdings by Owner is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Fetches all NFTs owned by a specific wallet address on the Arbitrum blockchain network
Price / call$0.01
Success—
StatusUnknown
How this service works
High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.
Output
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.
Example use cases
NFT portfolio audit for a wallet
“I want to see every NFT held by the wallet 0x1234abcd5678ef90 on Arbitrum — can you list them all, up to 50 results?”
Check NFT ownership before a trade
“Before I send this offer, can you confirm what NFTs wallet 0xdeadbeef99887766 currently holds on Arbitrum?”
Paginate through large NFT collection
“I checked the first 25 NFTs for wallet 0xaabbccdd11223344 on Arbitrum — can you fetch the next page using the pageKey from before?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/arbitrum/nft/by-ownerWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | number | |
| owner | string | |
| pageKey | string |
Tags
x402
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