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QuantaFlow x402 API Gateway — Alchemy Bob Mainnet
x402
QuantaFlow x402 API Gateway — Alchemy Bob 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 2026-10-12).
Proxies paid API requests to Alchemy Bob mainnet node via x402 micropayment protocol, charging $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 response body and content type from the Alchemy Bob mainnet node, passed through transparently after the $0.01 USDC x402 payment is verified. This includes standard JSON-RPC response payloads such as block data, account balances, contract call results, or transaction receipts.
Example use cases
Fetch on-chain token balance
“Check the current USDC token balance for wallet address 0xDeFi456... on Bob mainnet using the QuantaFlow Alchemy gateway — I need the raw balance from the latest block.”
Smart contract read call on Bob mainnet
“Call the read-only totalSupply function on the Bob mainnet smart contract at 0xContract789... through the QuantaFlow x402 Alchemy proxy and return the result.”
Fetch latest block number for DeFi monitoring
“Query the Alchemy Bob mainnet node via QuantaFlow to get the latest block number so I can check if my DeFi transaction has been confirmed.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/alchemy-bob-mainnet?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-per-call access to Alchemy's Bob mainnet node without a long-term API key subscription, particularly in autonomous agent workflows where x402 micropayments are already integrated. Ideal for low-volume or sporadic blockchain queries on Bob mainnet where $0.01 USDC per call is acceptable and you want to avoid managing Alchemy credentials directly.
Side effects
- Payment failure: insufficient USDC balance or x402 payment not accepted — gateway returns 402 Payment Required
- Invalid path: malformed or unsupported path below the upstream origin — upstream returns 400 or 404
- Upstream Alchemy node error: RPC method not found or invalid params — returns standard JSON-RPC error object
- Network timeout: Alchemy node or gateway unreachable — returns 502 or 504
- Rate limiting: excessive requests beyond allowed quota — returns 429 Too Many Requests
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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