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ERC-1155 Token Balance Lookup
x402
ERC-1155 Token Balance Lookup is a paid API for AI agents from agent402.tools, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Returns the balance (quantity) of a specific ERC-1155 token ID held by a given wallet address on a specified EVM chain
Price / call$0.002
Success—
StatusUnknown
How this service works
How many of one ERC-1155 token id an account holds, read straight from the contract. ERC-1155 is the multi-token standard behind most game items, editions and passes, where a single contract holds many ids and a balance is a quantity rather than ownership of one thing. Returns the balance as a decimal string. EVM chains: ethereum, base, polygon, arbitrum, optimism.
Output
Returns a JSON object containing the wallet address, ERC-1155 contract address, token ID, network name, and the token balance as a decimal string (e.g. '5' meaning the address holds 5 units of that token ID)
Example use cases
Game item ownership verification
“Check how many of token ID 7 the wallet 0x1234567890abcdef1234567890abcdef12345678 holds in the game items contract 0xabc123def456abc123def456abc123def456abc1 on Arbitrum — I need to confirm they have enough to enter the tournament.”
NFT edition pass gating
“Does the address 0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0 hold any of token ID 1 from the membership pass contract 0x2953399124f0cbb46d2cbacd8a89cf0599974963 on Polygon? I want to gate access to a community channel.”
On-chain portfolio audit
“What's the balance of token ID 100 in the ERC-1155 contract 0xdef456abc123def456abc123def456abc123def4 for wallet 0x9876543210fedcba9876543210fedcba98765432 on Base?”
Technical details
Endpoint
GEThttps://agent402.tools/api/chain/erc1155-balanceWhen to prefer
Use this endpoint when you need to query the quantity of a specific ERC-1155 multi-token ID held by a wallet on Ethereum, Base, Polygon, Arbitrum, or Optimism. Prefer this over ERC-721 balance checks when the token standard is ERC-1155 (multi-token, where balances are quantities not single ownership). Ideal for game item gating, edition pass verification, or any scenario requiring knowledge of how many units of a specific token ID a wallet holds.
Side effects
- Invalid contract address returns an error or zero balance
- Contract address is not an ERC-1155 contract — call may fail or return unexpected data
- Invalid wallet address format returns a validation error
- Unsupported network name returns an error
- Token ID not found in contract returns balance of '0'
- Rate limiting or payment failure results in HTTP 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"address": "0xabf4fabd7c416fb67202e5f9002389fc75e2a9d0",
"balance": "0",
"network": "polygon",
"tokenId": "1",
"contract": "0x2953399124f0cbb46d2cbacd8a89cf0599974963"
}
}Tags
x402
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