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QuantaFlow x402 Etherscan API Gateway
x402
QuantaFlow x402 Etherscan API Gateway is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-16).
Proxies requests to the Etherscan API via an x402 micropayment-gated gateway for blockchain data lookups
Price / call$0.01
Success—
StatusUnknown
How this service works
Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.
Output
The raw upstream Etherscan API response is passed through after the x402 micropayment is processed — typically JSON containing blockchain data such as account balances, transaction lists, token transfers, contract ABIs, gas estimates, or block details depending on the queried path.
Example use cases
Check wallet ETH balance on-chain
“What's the current ETH balance for wallet address 0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe on Ethereum mainnet?”
Fetch ERC-20 token transfers for address
“Pull all USDC token transfer events for the address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e from Etherscan so I can audit recent inflows and outflows.”
Look up smart contract ABI
“Get the ABI for the Uniswap V2 router smart contract at 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D from Etherscan so I can decode its function calls.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/etherscan?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need Etherscan blockchain data and want to pay per-call via x402 micropayments without managing a traditional Etherscan API key subscription. Ideal for agents that need on-demand, low-volume Ethereum data lookups in a web3-native payment context.
Side effects
- Payment failure: insufficient USDC balance causes 402 Payment Required response
- Invalid Etherscan path: malformed path parameter returns upstream 400 or 404 error
- Rate limit exceeded: Etherscan upstream rate limiting causes 429 responses
- Invalid address format: passing a malformed Ethereum address returns Etherscan error response
- Network issues: upstream Etherscan API unavailability causes timeout or 5xx errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| body | string | Optional JSON body forwarded to POST requests. |
| path | string | Path below the selected upstream origin. |
| query | object | |
| method | string |
Output
Schema · Response
{
"description": "The upstream response body and content type are passed through after successful payment."
}Tags
x402
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