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Phantom API — Base NFT Metadata Lookup
x402
Phantom API — Base NFT Metadata Lookup 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).
Fetches on-chain NFT metadata for a given contract address and token ID on the Base 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 the on-chain metadata for the specified NFT token on the Base network, typically including the token name, description, image URI, and an array of attributes or traits as defined in the token's metadata standard (ERC-721 or ERC-1155 metadata JSON schema).
Example use cases
NFT portfolio trait inspection
“I want to see all the metadata and traits for token ID 7 from the contract 0xAbCd...1234 on Base — can you fetch that for me?”
NFT marketplace listing enrichment
“For my marketplace app, grab the on-chain metadata for token 1001 at contract address 0xDEAD...BEEF on Base so I can display its name, image, and attributes.”
NFT ownership verification details
“Can you look up the metadata for token ID 500 at Base contract 0x9999...0000 so I can verify what this NFT actually is and what properties it has?”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/base/nft/metadataWhen to prefer
Choose this endpoint when you need fast, pay-per-call access to NFT metadata on the Base network without managing your own RPC infrastructure. It is especially useful for agents that occasionally need NFT metadata without committing to a subscription-based provider. Prefer this over general-purpose blockchain RPCs when you want a simple POST interface with structured output rather than raw contract calls.
Side effects
- Invalid or non-existent contract address returns an error or empty response
- Token ID not found on the contract returns a not-found or null metadata response
- Contract does not implement a standard metadata URI interface, resulting in missing fields
- Network congestion or RPC issues may cause timeouts
- Payment failure via x402 may block access before the call is made
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tokenId | string | |
| contractAddress | string |
Tags
x402
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