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OpenVerbs NFT Metadata Resolver
x402
OpenVerbs NFT Metadata Resolver is a paid API for AI agents from chain.openverbs.com, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-29).
Resolves an NFT (contract address + tokenId) on a specified EVM chain into normalized metadata including name, description, image URL, attributes, and token standard (ERC-721 or ERC-1155).
Price / call$0.006
Success—
StatusUnknown
Output
Returns a normalized metadata object including: NFT name, description, image URL (with IPFS links rewritten to a gateway URL), array of attributes/traits, and token standard (ERC-721 or ERC-1155). Returns `found: false` if the contract is not an NFT contract.
Example use cases
Displaying NFT details in a wallet
“Show me the name, image, and traits for token ID 7495 of the contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13d on Ethereum.”
Verifying NFT attributes for a trade
“Before I buy this NFT, can you pull the metadata for token 212 at contract 0x8a90CAb2b38dba80c64b7734e58Ee1dB38B8992e on Polygon — I need to confirm its rarity traits and that the image resolves correctly.”
Checking cross-chain NFT metadata
“I have an NFT on Base — contract 0x2Af673933DF5CaB96c9bC0e0Ce1Ced3C7e25A82, token ID 5 — can you fetch its normalized metadata and tell me what token standard it uses?”
Technical details
Endpoint
POSThttps://chain.openverbs.com/v1/nft-metadata?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need normalized, ready-to-display NFT metadata for a specific token on a supported EVM chain (Ethereum, Base, Arbitrum, Optimism, Polygon). It handles the full resolution pipeline — on-chain tokenURI read, IPFS/Arweave/HTTP metadata fetch, and image URL normalization — in a single call. Prefer this over raw RPC calls when you want a clean, consistent output format without building your own IPFS gateway or metadata normalization logic.
Side effects
- Non-NFT contract address returns `found: false` instead of metadata
- Invalid contract address format (must be 0x-prefixed 40-char hex) causes validation error
- Token ID not minted or out of range returns an error or `found: false`
- Unsupported chain name causes validation error (must be ethereum, base, arbitrum, optimism, or polygon)
- Unreachable or malformed tokenURI/metadata document may result in partial or failed response
- IPFS or Arweave metadata that is offline may cause fetch failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | EVM chain to query. One of: ethereum, base, arbitrum, optimism, polygon. Default "ethereum". |
| tokenId | — | Token id (decimal or 0x-hex integer). |
| contract | string | NFT contract address. |
Tags
x402
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