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Synapse API — Unichain NFT by Owner Lookup
x402
Synapse API — Unichain NFT by Owner Lookup 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 2026-09-14).
Fetches all NFTs owned by a given wallet address on the Unichain blockchain network, with optional pagination.
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 address on Unichain, including token IDs, contract addresses, NFT metadata (name, image, attributes), and a pageKey for fetching subsequent pages if more results exist.
Example use cases
NFT portfolio snapshot for a wallet
“Show me all the NFTs held by wallet 0x1234...abcd on Unichain, up to 50 at a time.”
Verify NFT ownership before gating access
“Check if wallet 0xDeadBeef...9999 on Unichain actually owns any NFTs from a specific collection before I grant them access.”
Paginate through large NFT collection
“I already fetched the first page of NFTs for wallet 0xABC...789 on Unichain — now fetch the next page using the pageKey I got back.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/unichain/nft/by-ownerWhen to prefer
Use this endpoint when you specifically need NFT holdings data for a wallet on the Unichain network. Prefer it over generic NFT APIs when your use case is Unichain-native and you need pay-per-call pricing without a subscription commitment. Well-suited for agents that need to check ownership, build portfolio views, or gate access based on Unichain NFT holdings.
Side effects
- Invalid or malformed owner address returns an error or empty result
- Unichain network unavailable causes timeout or 503
- Invalid pageKey causes pagination error or restart from beginning
- Limit value out of acceptable range returns validation error
- No NFTs owned returns an empty list without error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | number | |
| owner | string | |
| pageKey | string |
Tags
x402
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