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Hermes x402 NFT Metadata Lookup
x402
Hermes x402 NFT Metadata Lookup is a paid API for AI agents from api.zlovev.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-28).
Fetches full NFT token metadata, owner, collection info, and resolves ipfs:// tokenURIs for a given contract+token on Base or Ethereum mainnet, paid per-call with USDC via x402.
Price / call$0.02
Success—
StatusUnknown
How this service works
Pay-per-call data API for AI agents. No API key, no account, no signup — pay USDC on Base (eip155:8453) per request; free /api/meta lists all 24 endpoints. One call each: web page to LLM-ready text and link previews; China A-share quotes and limit-up pool; Chinese text and pinyin; Base/Ethereum on-chain reads (address, token, ERC-20 balances, tx, blocks, transfer history, gas price in USD); NFT records (collection, owner, and ipfs:// tokenURI resolved through public gateways); full-page screenshots; email verification without sending mail; ENS forward/reverse resolution; smart-contract due diligence (ABI, verified source, proxy); token security facts (owner, renounced ownership, paused, bytecode capability selectors); domain dossier (RDAP, DNS, TLS certificate, HTTP facts, hosting network); a one-call rule-based contract verdict (published-weights exposure score, owner/pause/proxy/capability facts, every reason with evidence); and an ERC-20 allowance risk check that returns the live allowance matrix for one wallet across up to 10 spenders (unlimited flags, contract/EOA status, exact revoke calls) with a single verdict.
Output
Returns a JSON object with: token owner address, existence flag, URI kind (e.g. ipfs), raw token URI, whether owner is a contract; resolved metadata including NFT name, image (ipfs:// and HTTP gateway URL), total attribute count, metadata SHA-256 hash, and source IPFS gateway used; plus collection name, symbol, token standard (erc721/erc1155), and raw total supply.
Example use cases
NFT portfolio display enrichment
“I have a list of NFTs a wallet holds on Base — can you fetch the name, image, and collection info for token ID 42 of contract 0xabc123...def456 so I can display it nicely?”
IPFS image resolution for NFT marketplace
“The NFT at contract 0x400b77f2ecb501fb00e7240e37f9f286cb13cabf token 7 on Base has an ipfs:// image URL — can you get me the public HTTP gateway URL for the image so I can embed it?”
NFT ownership verification
“Can you check who currently owns token ID 99 of the ERC-721 contract 0xdeadbeef...1234 on Ethereum mainnet, and confirm whether that owner is a contract or a regular wallet?”
Technical details
Endpoint
GEThttps://api.zlovev.com/api/chain/nft/metadata?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a single, unified response combining on-chain NFT token data (owner, URI) with off-chain IPFS metadata resolution (name, image, attributes) and collection-level facts, without setting up an API key or account — paying $0.02 USDC per call via x402 on Base. Prefer this over manual on-chain reads + separate IPFS fetches when you want one call that handles both layers and resolves ipfs:// URIs through public HTTP gateways automatically.
Side effects
- Invalid contract address format returns error
- Token ID does not exist on chain returns exists:false
- IPFS gateway timeout causes metadata.ok:false
- Unsupported chain value returns validation error
- Payment not received causes 402 response before data is returned
- Contract is not an NFT contract returns schema mismatch or empty collection fields
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"chain": "base",
"token": {
"owner": "0x…",
"exists": true,
"uri_kind": "ipfs",
"token_uri": "ipfs://bafybei…/1",
"owner_is_contract": false
},
"network": "eip155:8453",
"contract": "0x400b77f2ecb501fb00e7240e37f9f286cb13cabf",
"metadata": {
"ok": true,
"meta": {
"name": "Sphinx #1",
"image": "ipfs://bafy…",
"image_http": "https://gateway.pinata.cloud/ipfs/bafy…",
"attributes_total": 7
},
"sha256": "9f2c…",
"source_gateway": "gateway.pinata.cloud"
},
"token_id": "1",
"collection": {
"name": "ReformistSphinx",
"symbol": "SPHINX",
"standard": "erc721",
"total_supply_raw": "564688"
}
}
}Tags
x402
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