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NFT Metadata Resolver
x402
NFT Metadata Resolver is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Fetches display metadata for a single NFT by contract address and token ID, returning title, description, image URLs, traits, and token standard (ERC-721/ERC-1155)
Price / call$0.001
Success—
StatusUnknown
How this service works
Resolve the metadata for a single NFT: title, description, image URLs (original + cached CDN), attributes/traits, and the standard (ERC-721 vs ERC-1155). Useful when you have a contract+tokenId and need the display data without re-fetching the whole collection.
Output
Returns the NFT's title, description, original image URL, cached CDN image URL, attributes/traits array, and the token standard (ERC-721 or ERC-1155) for the specified contract and token ID on the requested network.
Example use cases
Example prompt
“Can you pull the metadata for token ID 4521 on contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D on Ethereum — I need its title, image, and traits?”
Technical details
Endpoint
POSThttps://agent402.tools/api/nft-metadataWhen to prefer
Use this endpoint when you have a specific NFT contract address and token ID and need its display metadata (title, description, image, traits) without building your own indexing infrastructure. Ideal for single-token lookups on Ethereum, Base, Polygon, Arbitrum, or Optimism. Prefer this over general NFT indexers when you want a lightweight, pay-per-call approach without API key setup.
Side effects
- Invalid or non-existent contract address returns an error
- Token ID not found on the specified contract
- Unsupported network name causes a validation error
- Malformed token ID (non-numeric, wrong format) causes a parse error
- Metadata URI is unreachable or returns invalid JSON (off-chain metadata failure)
- Payment not provided or insufficient USDC causes a 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| network | string | ethereum / base / polygon / arbitrum / optimism (default base). |
| tokenId | string | Token ID as a string (decimal or hex). |
| contract | string | 0x-prefixed 40-char NFT contract address. |
Output
Schema · Response
{
"type": "json",
"example": {
"image": "https://example.com/azuki1.png",
"title": "Azuki #1",
"network": "ethereum",
"tokenId": "1",
"contract": "0xed5af388653567af2f388e6224dc7c4b3241c544",
"standard": "ERC721",
"attributes": [
{
"value": "Pink Hairband",
"trait_type": "Hair"
}
],
"collection": "Azuki",
"description": "Azuki starts with…"
}
}Tags
x402
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