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QuantaFlow x402 API Gateway – Alchemy Polygon Mainnet
x402
QuantaFlow x402 API Gateway – Alchemy Polygon Mainnet 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 paid API requests to Alchemy's Polygon Mainnet JSON-RPC endpoint using the x402 micropayment protocol at $0.01 USDC per call
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 Alchemy Polygon Mainnet JSON-RPC response body is passed through directly after the x402 micropayment is settled — including block data, transaction receipts, account balances, contract call results, or any other standard Polygon RPC response payload, along with its content type.
Example use cases
Check wallet balance on Polygon
“Look up the MATIC balance of wallet 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Polygon Mainnet right now.”
Fetch latest Polygon block data
“Get the latest block number and its transaction count from Polygon Mainnet using eth_getBlockByNumber.”
Read smart contract state on Polygon
“Call the balanceOf function on the USDC contract at 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174 on Polygon Mainnet for address 0xAbC123... and return the token balance.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/alchemy-polygon-mainnet?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-per-call access to Alchemy's Polygon Mainnet RPC without committing to a subscription or managing API keys — ideal for agents that make infrequent or bursty blockchain queries and want to pay $0.01 USDC per call via the x402 micropayment protocol. Prefer this over direct Alchemy API access when your agent environment already handles x402 payments natively.
Side effects
- Insufficient USDC balance for micropayment — payment fails and request is rejected
- Invalid or malformed JSON-RPC path/body — upstream Alchemy returns an error response
- Unsupported RPC method — Alchemy rejects the call with a method-not-found error
- Rate limit or Alchemy-side outage — upstream returns 5xx or timeout
- Incorrect query parameters — unexpected behavior or empty result from Alchemy
- x402 facilitator unavailable — payment cannot be processed, request blocked
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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Zero review prompt (fires after every successful call)
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