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ERC1155 Token Balance Checker
x402
ERC1155 Token Balance Checker is a paid API for AI agents from skills.onesource.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Returns how many copies of a specific ERC1155 token ID a wallet address holds, via eth_call on supported EVM chains
Price / call$0.003
Success—
StatusUnknown
How this service works
ERC1155 token balance via balanceOf (eth_call) - how many copies of a token_id a wallet holds
Output
Returns the wallet's balance (number of copies held) of the specified ERC1155 token ID, along with the account address, contract address, and token ID echoed back for confirmation.
Example use cases
Verify membership NFT ownership
“Check if wallet 0x8f3cf7ad23cd3cadbd9735aff958023d60c95600 holds any copies of token ID 1 from the membership contract 0x2c1ba2d3715eb694515a5fc23ef28fbc9a7e3da9 on Ethereum.”
Validate gaming item inventory
“How many units of token ID 3 does address 0x742d35cc6634C0532925a3b844Bc9e7595f42e01 own from our game items contract 0x495f947276749Ce646f68AC8c248420045cb7b5e on Base?”
Check multi-edition collectible allocation
“I need to verify that wallet 0x5a0b54d5dc17e0aadc383d2db43b0a0d3e029c4c has at least 5 copies of token ID 12 from the collectibles contract 0x1234567890abcdef1234567890abcdef12345678 on Avalanche.”
Technical details
Endpoint
GEThttps://skills.onesource.io/api/chain/erc1155-balanceWhen to prefer
Use this endpoint when you need to check how many units of a specific ERC1155 token ID a wallet owns on Ethereum, Base, Avalanche, Sepolia, or MegaETH. Prefer this over ERC20/ERC721 balance endpoints when dealing with semi-fungible or multi-edition NFT tokens (ERC1155 standard).
Side effects
- Invalid wallet address format returns 400 error
- Invalid contract address returns 400 error
- Token ID must be a numeric string — non-numeric values rejected
- Unsupported network name returns validation error
- Contract address that is not an ERC1155 contract may return 0 or RPC error
- RPC node unavailability causes 503 or timeout
Input
{
"account": "0x1234567890123456789012345678901234567890",
"network": "sepolia",
"contract": "0x0987654321098765432109876543210987654321",
"token_id": "1"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| account | string | |
| network | string | |
| contract | string | |
| token_id | string |
Output
{
"data": {
"account": "0x1234567890123456789012345678901234567890",
"balance": "0",
"token_id": "1",
"contract_address": "0x0987654321098765432109876543210987654321"
},
"meta": {
"endpoint": "/api/chain/erc1155-balance",
"request_id": "c6d323c1a54648ff"
}
}Schema · Response
| Field | Type | Description |
|---|---|---|
| datarequired | object | |
| metarequired | object |
Tags
x402
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