# QuantaFlow x402 API Gateway – Infura Base Mainnet

> QuantaFlow x402 API Gateway – Infura 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 2026-10-22).

Proxies requests to Infura's Base mainnet JSON-RPC endpoint via the x402 micropayment protocol, charging $0.01 USDC per call

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/infura-base-mainnet?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-x402-api-gateway-infura-base-mainnet-52f6c84e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kxQHE8OpQuw36u3BS2erV

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability quantaflow-x402-api-gateway-infura-base-mainnet-52f6c84e -d '<json body>'
```

Example prompt: Query the Base mainnet blockchain via Infura — call eth_getBalance for address 0xAbC123... at the latest block and pay the $0.01 USDC fee per request.

## When to prefer this

Choose this endpoint when you need pay-per-call access to Base mainnet JSON-RPC without committing to a monthly Infura subscription — ideal for low-frequency agent tasks, one-off blockchain queries, or DeFi workflows that need micropayment-native billing via x402 on Base L2.

## Known failure modes

- Payment failure: insufficient USDC balance causes 402 Payment Required before request is forwarded
- Invalid JSON-RPC method: upstream returns a JSON-RPC error object with code and message
- Network congestion: upstream Infura latency spike or timeout
- Malformed path or body: gateway may reject or misroute the request
- Rate limiting: Infura upstream quota exceeded returns 429 or JSON-RPC error

## 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 Infura's Base mainnet JSON-RPC node is passed through transparently — including JSON-RPC result fields, block data, transaction receipts, account balances, or error objects — after successful $0.01 USDC micropayment via the x402 protocol.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "body": {
   "type": "string",
   "description": "Optional JSON body forwarded to POST requests."
  },
  "path": {
   "type": "string",
   "description": "Path below the selected upstream origin."
  },
  "query": {
   "type": "object"
  },
  "method": {
   "enum": [
    "GET",
    "POST"
   ],
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "description": "The upstream response body and content type are passed through after successful payment."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quantaflow-x402-api-gateway-infura-base-mainnet-52f6c84e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from quanta-roan.vercel.app](https://www.zero.xyz/host/quanta-roan.vercel.app/llms.txt)