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Phantom API — zkSync NFT Metadata Lookup
x402
Phantom API — zkSync 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 token ID and contract address on the zkSync 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 on-chain NFT metadata for the specified token from the zkSync network, typically including the token name, description, image URL, and attributes/traits array, sourced directly from the smart contract or linked metadata URI.
Example use cases
NFT marketplace listing enrichment
“I need the full metadata — name, image URL, and traits — for token ID 7 from the zkSync NFT contract at 0xAbCd1234... so I can display it on our marketplace listing page.”
Verify NFT ownership attributes
“Can you fetch the on-chain metadata for zkSync NFT token 99 at contract address 0xDEAD...BEEF? I want to verify what traits and rarity attributes it has before I make an offer.”
Portfolio NFT details aggregation
“Pull up the metadata for token ID 1500 from the zkSync contract 0x9876...FEDC — I'm building a summary of all the NFTs in my wallet and need the image and description for this one.”
Technical details
Endpoint
POSThttps://phantom-api-omega.vercel.app/api/zksync/nft/metadataWhen to prefer
Choose this endpoint when you specifically need NFT metadata on the zkSync (zkSync Era / zkSync 2.0) network by contract address and token ID. It is preferable over generic blockchain explorers when you need structured, machine-readable metadata in a single pay-per-call API request without managing your own RPC node or zkSync-specific infrastructure.
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 error
- Contract is not an NFT contract (no tokenURI method) results in a metadata retrieval failure
- zkSync network congestion or RPC issues may cause timeouts
- Metadata hosted off-chain (e.g. IPFS) may be unavailable if the gateway is down
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tokenId | string | |
| contractAddress | string |
Tags
x402
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