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QuantaFlow x402 Gateway – Infura Arbitrum Mainnet Proxy
x402
QuantaFlow x402 Gateway – Infura Arbitrum Mainnet Proxy is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Proxies JSON-RPC and REST calls to Infura's Arbitrum Mainnet node endpoint via the x402 micropayment protocol, charging $0.01 USDC per request.
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 response body from Infura's Arbitrum Mainnet node, passed through transparently after successful x402 micropayment. Typically a JSON-RPC response containing result fields like block numbers, balances, transaction receipts, or contract return values, along with the upstream content type.
Example use cases
Check Arbitrum wallet balance
“What's the ETH balance of 0xAbC...123 on Arbitrum mainnet right now? Use eth_getBalance against the latest block.”
Fetch latest Arbitrum block number
“Get me the current block number on Arbitrum mainnet — run eth_blockNumber against the Infura Arbitrum node.”
Query DeFi smart contract state
“Call the balanceOf function on the USDC contract at 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48 for my address 0xDef...456 on Arbitrum mainnet.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/infura-arbitrum-mainnetWhen to prefer
Choose this endpoint when you need pay-per-call access to Infura's Arbitrum Mainnet node without managing an Infura API key subscription — ideal for low-volume or on-demand blockchain queries where the x402 micropayment model ($0.01/call) is more cost-effective than a monthly plan. Prefer this over direct Infura access when operating in an autonomous agent context that already handles x402 payments.
Side effects
- Payment failure: insufficient USDC balance or x402 payment header missing — returns 402 Payment Required
- Invalid RPC method or malformed JSON body — upstream returns JSON-RPC error object
- Path not found on upstream Infura node — returns 404 or upstream error
- Infura rate limit or node unavailability — upstream 429 or 503 propagated through
- Network timeout reaching Arbitrum node — request hangs or returns gateway timeout
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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