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QuantaFlow x402 API Gateway — Alchemy Base Mainnet
x402
QuantaFlow x402 API Gateway — Alchemy Base 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 2026-10-10).
Proxies requests to Alchemy's Base mainnet RPC/API endpoints via the 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 from Alchemy's Base mainnet API is passed through as-is, including the response body and content type. This may be JSON-RPC results, token balances, transaction data, NFT metadata, or any other Alchemy Enhanced API response depending on the path called.
Example use cases
Token balance lookup on Base
“Can you check the USDC token balance for wallet 0xAbC...123 on Base mainnet using the Alchemy API? Just hit the token balance endpoint with that address.”
Smart contract state query
“I need to call eth_call on Base mainnet to read the current price from the Uniswap V3 pool contract at 0xDef...456 — can you forward that RPC request through the Alchemy gateway?”
Recent transaction history fetch
“Pull the last 10 transactions for address 0x789...XYZ on Base mainnet from Alchemy's asset transfers API so I can audit recent activity.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/alchemy-base-mainnet?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-per-call access to Alchemy's Base mainnet APIs without a pre-provisioned API key, using the x402 micropayment protocol for frictionless on-chain billing at $0.01 per request. It is ideal for agents that need occasional or bursty access to Base mainnet blockchain data (balances, transactions, contract calls) without managing API subscriptions.
Side effects
- Payment failure: x402 payment not accepted or insufficient USDC balance — gateway returns 402 Payment Required
- Invalid path: requested path not available on Alchemy Base mainnet — returns upstream 404 or error
- Malformed body: invalid JSON in body field — upstream returns 400 Bad Request
- Rate limiting: Alchemy upstream rate limit exceeded — returns 429 Too Many Requests
- Network error: Base mainnet RPC node unavailable — returns 503 or upstream 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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Zero review prompt (fires after every successful call)
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