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Aether NFT Owner Lookup on Base
x402
Aether NFT Owner Lookup on Base is a paid API for AI agents from aether-x402.vercel.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-12).
Returns the current owner address of a specific NFT on the Base blockchain given a contract address and token ID.
Price / call$0.002
Success—
StatusUnknown
How this service works
Pay-per-call Base onchain data, token risk verdicts and x402 payability audits over x402 (USDC on Base).
Output
Returns a JSON object containing the current owner's wallet address (e.g. {"owner": "0x..."}) for the specified NFT token ID on the Base blockchain.
Example use cases
Verify NFT ownership before granting access
“Before I give this user access to the members-only area, can you check if wallet 0xABC... actually owns token ID 7 from the NFT contract 0x1234567890abcdef1234567890abcdef12345678 on Base?”
Trace NFT holder for airdrop eligibility
“I need to find who currently owns token ID 101 from the Base NFT contract 0xd4e4078ca3495DE5B1d4dB434BEbc5a986197196 — they're eligible for an airdrop and I need their wallet address.”
Confirm NFT transfer after sale
“A sale just went through — can you confirm that token ID 55 from contract 0xAbCdEf1234567890abcdef1234567890ABCDEF12 on Base now shows the buyer's address as the owner?”
Technical details
Endpoint
POSThttps://aether-x402.vercel.app/v1/base/nft-owner?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, pay-per-call ownership lookup for a specific NFT on the Base L2 network without setting up your own blockchain RPC infrastructure. Prefer this over building a custom Base node query when you need low-overhead, agent-friendly onchain data billed in USDC via x402.
Side effects
- Invalid contract address format (not a valid 0x hex address) returns an error
- Token ID does not exist on the contract returns a not-found or null owner
- Contract address is not an NFT contract on Base returns an error
- Network or RPC issues may cause transient failures
- Payment failure via x402/USDC blocks the call before execution
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tokenId | — | |
| contract | string |
Output
Schema · Response
{
"type": "json",
"example": {
"owner": "0x..."
}
}Tags
x402
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