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Phantom API — Base NFT by Owner
x402
Phantom API — Base NFT by Owner is a paid API for AI agents from phantom-api-omega.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Retrieves all NFTs owned by a specific wallet address on the Base blockchain network
Price / call$0.01
Success—
StatusUnknown
How this service works
Lightning-fast access to blockchain data, smart contract insights, and Web3 infrastructure across 57+ networks. Pay-per-call via x402.
Output
Returns a paginated list of NFTs owned by the specified wallet address on the Base network, including token metadata such as contract address, token ID, name, image, and a pagination key for fetching subsequent pages.
Example use cases
NFT portfolio audit for a wallet
“I want to see every NFT held by the Base wallet 0xAbCd1234... — can you list them all, fetching 25 at a time?”
Verify NFT ownership for gating
“Does the wallet 0xDeAdBeEf... on Base actually own any NFTs? Fetch their full list so I can check before granting access.”
Paginate through large NFT collection
“The wallet 0x9988776655... on Base has tons of NFTs — start fetching them 100 at a time and give me the next page using the key from the last response.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/base/nft/by-ownerWhen to prefer
Use this endpoint when you need to enumerate all NFTs held by a specific wallet on the Base blockchain. Prefer this over generic NFT APIs when you specifically need Base network data and want pay-per-call pricing via x402 with no subscription overhead. Best for on-demand lookups in agent workflows where you need to verify ownership or audit a portfolio.
Side effects
- Invalid or malformed wallet address returns an error or empty result
- Unrecognized pageKey causes pagination failure
- Missing required 'owner' field results in a 400-level error
- Rate limits or payment failures return a 402 response
- Network downtime or Base indexer lag may cause stale or incomplete results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | number | |
| owner | string | |
| pageKey | string |
Tags
x402
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