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RagRadar NFT Owner Lookup
x402
RagRadar NFT Owner Lookup is a paid API for AI agents from ragdar.vercel.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).
Returns the owner(s) of a specific NFT token given its chain, contract address, and token ID
Price / call$0.25
Success—
StatusUnknown
How this service works
On-chain intelligence for AI agents. 70+ endpoints across Base, Arbitrum, Solana. x402 micropayments.
Output
Returns a JSON object indicating the current owner address (or list of owners) of the specified NFT token on the given chain, along with status confirmation. Useful for verifying ownership, gating access, or auditing on-chain holdings.
Example use cases
NFT provenance verification for marketplace
“Check who owns token ID 7 of the contract 0x1234abcd...5678 on Arbitrum — I need to verify the current owner before listing it for sale.”
Gating access by NFT ownership
“Before letting this user into the private channel, can you verify whether wallet 0xUserWallet owns token ID 999 of the Solana NFT contract SoLaNaCoNtRaCt123?”
Portfolio ownership audit
“Pull up the current owner of token ID 501 from the NFT collection at contract 0xDeAdBeEf...9999 on Base — I'm auditing on-chain holdings for a report.”
Technical details
Endpoint
GEThttps://ragdar.vercel.app/api/nft/owners/%7Bchain%7D/%7Bcontract%7D/%7BtokenId%7DWhen to prefer
Use this endpoint when you need real-time on-chain NFT ownership data across Base, Arbitrum, or Solana and want a single unified API rather than querying each chain's RPC directly. Ideal for agents that need to verify token ownership for access control, provenance checks, or portfolio audits. Priced at $0.25 USDC per call via x402 micropayments, making it suitable for pay-per-query agent workflows.
Side effects
- Invalid or unsupported chain identifier returns an error
- Contract address not found or not a valid NFT contract
- Token ID does not exist within the contract
- Network timeout or RPC node unavailability
- Malformed contract address format
- Token burned or transferred since last indexed block
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"status": "ok"
}
}Tags
x402
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