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QuantaFlow x402 API Gateway — Alchemy Superseed Mainnet
x402
QuantaFlow x402 API Gateway — Alchemy Superseed 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 the Alchemy Superseed mainnet RPC/data endpoint, charging $0.01 USDC per call via the x402 payment protocol.
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 from Alchemy's Superseed mainnet API is passed through transparently after the $0.01 USDC x402 micropayment is confirmed, preserving the original content type and body.
Example use cases
Wallet balance check on Superseed
“Check the ETH balance of wallet address 0xABC123 on Superseed mainnet — call eth_getBalance through the Alchemy Superseed node.”
Smart contract read on Superseed
“Read the totalSupply value from the ERC-20 contract at 0xDEF456 on Superseed mainnet using Alchemy's eth_call endpoint.”
Transaction status lookup
“Look up the status of transaction 0x789abc on Superseed mainnet via Alchemy — I need to know if it was confirmed.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/alchemy-superseed-mainnet?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need metered, pay-per-call access to Alchemy's Superseed mainnet node without managing a dedicated Alchemy API key, and you want to pay per request via x402 USDC micropayments. Prefer this over direct Alchemy API access when building agent workflows that require cost-proportional billing or when integrating into x402-native payment pipelines.
Side effects
- Payment failure: insufficient USDC balance or x402 payment not accepted — request blocked before forwarding
- Invalid path: upstream Alchemy endpoint returns 404 or 400 if the path or method is unsupported
- Upstream error: Alchemy node returns 5xx or RPC error if the Superseed mainnet node is unreachable
- Malformed body: JSON parse error if the body string is not valid JSON for a POST request
- Rate limiting: Alchemy may throttle requests exceeding their node limits even after payment
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
Reviews
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Zero review prompt (fires after every successful call)
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