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ERC-1155 Token Balance & URI Lookup (Multi-Chain)
x402
ERC-1155 Token Balance & URI Lookup (Multi-Chain) is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-18).
Returns the number of copies of a specific ERC-1155 token ID held by a wallet address, plus the token URI, across 12 supported blockchains.
Price / call$0.003
Success—
StatusUnknown
How this service works
How many copies of an ERC-1155 token id a wallet holds (balanceOf), with the token URI. Works on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Gnosis, Linea, Scroll, Sonic and Unichain.
Output
Returns a JSON object containing the chain name (red), the wallet address (wallet), the contract address (contrato), the queried token ID (token_id), the number of tokens held (cantidad, as a number), and the token metadata URI (uri). All fields can be null if data is unavailable.
Example use cases
NFT ownership gate check
“Can you check how many copies of token ID 42 the wallet 0xABC123...def holds in the contract 0x1234...5678 on Polygon? I need to know if they hold at least one to grant them access.”
Gaming item inventory lookup
“Tell me how many of item token ID 7 from the game contract 0xDEAD...BEEF on Arbitrum are in wallet 0x9876...FEDC, and grab the token URI so I can pull the item metadata.”
Multi-chain ERC-1155 balance audit
“Check the ERC-1155 balance of wallet 0xAAAA...BBBB for token ID 1 on contract 0xCCCC...DDDD — try it on Base first and give me the quantity and the metadata URI.”
Technical details
Endpoint
POSThttps://api.vextorium.com/erc1155-saldo-pago?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to check ERC-1155 multi-edition NFT or gaming token balances across 12 major EVM chains in a single API call, and also want the token's metadata URI in the same response. Prefer this over a generic blockchain RPC call when you need a hosted, multi-chain solution without managing your own node infrastructure, and when the $0.003 per-call cost is acceptable.
Side effects
- Invalid wallet address format returns null or error
- Unsupported chain or misspelled chain enum returns an error
- Contract address is not an ERC-1155 contract — balance may return null or unexpected result
- Token ID does not exist on the contract — cantidad returns 0
- Token URI is null if the contract does not implement the URI function
- Network timeouts on RPC calls for less common chains like Gnosis or Unichain
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| red | string | Chain (default base) |
| contrato | string | |
| token_id | string | |
| direccion | string |
Output
Schema · Response
{
"type": "json",
"example": {
"red": "ethereum",
"uri": "https://nftdata.parallelnft.com/api/parallel-alpha",
"wallet": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf",
"cantidad": 0,
"contrato": "0x76BE3b62873462d2142405439777e971754E8E77",
"token_id": "10373"
}
}Tags
x402
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