# QuantaFlow x402 Gateway — Infura opBNB Mainnet Proxy

> QuantaFlow x402 Gateway — Infura opBNB Mainnet Proxy is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).

Proxies authenticated RPC/API requests to Infura's opBNB mainnet endpoint, charging $0.01 USDC per call via the x402 micropayment protocol.

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/infura-opbnb-mainnet?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-x402-gateway-infura-opbnb-mainnet-proxy-a6de6ccf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qW2JgC6lWJ0cnGQNNdbic

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-gateway-infura-opbnb-mainnet-proxy-a6de6ccf -d '<json body>'
```

Example prompt: Query the opBNB mainnet to get the latest block number — use the Infura RPC proxy and pay per call with USDC.

## When to prefer this

Choose this endpoint when you need pay-per-call access to Infura's opBNB mainnet RPC without managing an Infura API key or subscription, and your agent already supports the x402 micropayment protocol. Ideal for low-volume, sporadic opBNB queries where a full Infura account is unnecessary.

## Known failure modes

- Payment failure: insufficient USDC balance causes 402 Payment Required before the request is forwarded
- Invalid path: malformed or unsupported RPC path results in 404 or upstream error
- Upstream Infura error: network congestion or Infura outage returns 5xx or RPC error object
- Invalid JSON body: malformed request body causes upstream rejection
- Rate limits: upstream Infura node rate limiting may return 429

## 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 opBNB mainnet RPC node — including JSON-RPC result fields such as block data, transaction receipts, account balances, or contract call outputs — passed through as-is after the x402 micropayment is settled.

## 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-gateway-infura-opbnb-mainnet-proxy-a6de6ccf/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)