Vextorium NFT Collection On-Chain Profile

x402

Vextorium NFT Collection On-Chain Profile is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-19).

Fetches on-chain metadata for an NFT collection (ERC-721/1155) including name, symbol, total supply, contract owner, royalties, and token standard from Base, Ethereum, Arbitrum, Optimism, or Polygon.

Price / call$0.004

Seller volume →—

Success—

StatusUnknown

How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

Output

Returns a JSON object with the collection's name, ticker symbol, total supply (integer), contract address, blockchain network, token standard (ERC-721 or ERC-1155), and the contract owner's wallet address, all read directly from the on-chain contract.

Example use cases

Verify NFT collection legitimacy

“Can you pull the on-chain details for the NFT contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D on Ethereum? I want to confirm the owner address, token standard, and total supply before I make a purchase.”

Check royalty settings before resale

“What royalties does the NFT collection at 0x49cF6f5d44E70224e2E23fDcdd2C053F30aDA28B on Polygon charge? I need the royalty percentage and standard before listing on a marketplace.”

Audit NFT contract on Base chain

“Give me the full on-chain profile for the NFT contract 0xd4307e0acD12CF46fD6cf93BC264f5d5D1598792 deployed on Base — name, symbol, owner, supply, and token standard.”

Technical details

Endpoint

POSThttps://api.vextorium.com/v1/nft-collection?utm_source=zero.xyz

When to prefer

Use this endpoint when you need authoritative, real-time on-chain data about an NFT collection directly from the smart contract rather than from a marketplace API or third-party index. Best for verifying contract ownership, checking royalty configurations, or confirming the token standard (ERC-721 vs ERC-1155) across Base, Ethereum, Arbitrum, Optimism, or Polygon.

Side effects

Invalid or non-existent contract address returns an error or null fields
Unsupported network (not one of base, ethereum, arbitrum, optimism, polygon) returns a validation error
Contract does not implement ERC-2981 royalty standard — royalty fields may be null
Contract is not an NFT (ERC-721/1155) — may return incomplete or null metadata
Network RPC timeout or chain congestion causes slow or failed response

Input

Schema · Request body

Field	Type	Description
network	string
contract	string

Output

Schema · Response

{
  "type": "json",
  "example": {
    "name": "BoredApeYachtClub",
    "supply": 10000,
    "symbol": "BAYC",
    "network": "ethereum",
    "contract": "0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D",
    "standard": "ERC-721",
    "contract_owner": "0x0000000000000000000000000000000000000000"
  }
}

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