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code402 ERC-20 Token Chain Data
x402
code402 ERC-20 Token Chain Data is a paid API for AI agents from verify.code402.dev, paid per call via x402, $0.5/call, status unknown (last checked 2026-10-01).
Fetches on-chain ERC-20 token data for a specific token contract and address on Ethereum, returning chain data with a signed receipt, paid per call via x402 on Base (USDC).
Price / call$0.5
Success—
StatusUnknown
How this service works
Deterministic compliance verification (IBAN, sanctions, onchain address) with XDR-1 signed receipts, plus Ethereum chain-data endpoints. Paid per call via x402 on Base (USDC).
Output
Returns a JSON object with a 'result' field containing the ERC-20 token chain data (such as balance or token metadata) for the given token contract and address, along with a 'network' field identifying the chain (e.g. 'ethereum'). Responses include an XDR-1 signed receipt for auditability.
Example use cases
Verify wallet token holdings
“What's the current on-chain USDC balance for wallet address 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 on Ethereum? Use the ERC-20 chain data lookup for the USDC token contract.”
Compliance check for token transfers
“I need to verify what ERC-20 token balance the address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e holds for the DAI contract before approving a large transfer — can you pull that on-chain data?”
DeFi portfolio audit
“Pull the on-chain data for the WETH token contract and the address 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B so I can audit their holdings for my DeFi report.”
Technical details
Endpoint
GEThttps://verify.code402.dev/v1/chain/erc20/%7Btoken%7D/%7Baddress%7D?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, auditable on-chain ERC-20 token data for a specific token and wallet address on Ethereum, especially when a signed XDR-1 receipt is required for compliance or audit purposes. It is best suited for per-call, pay-as-you-go queries via x402 on Base (USDC) where you need a tamper-evident record of the query result.
Side effects
- Invalid token contract address returns an error or empty result
- Invalid or malformed Ethereum wallet address returns a 400-level error
- Token contract does not exist on the specified network, returning no data
- Payment failure via x402 protocol results in 402 Payment Required before data is returned
- RPC node downtime or Ethereum network congestion may cause delayed or failed responses
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"result": "chain data",
"network": "ethereum"
}
}Tags
x402
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