# QuantaFlow x402 API Gateway — RapidAPI BB Finance Proxy

> QuantaFlow x402 API Gateway — RapidAPI BB Finance 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 2026-10-16).

Proxies requests to a RapidAPI BB Finance upstream service via x402 micropayment protocol, charging $0.01 USDC per call.

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/rapid-bb-finance?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-x402-api-gateway-rapidapi-bb-finance-proxy-89ff84b8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X5muQWE5NjL4hXIa3xiNs

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-rapidapi-bb-finance-proxy-89ff84b8 -d '<json body>'
```

Example prompt: Pull the latest stock price for AAPL from the BB Finance API — use the QuantaFlow x402 gateway and forward the request to the /quote path with symbol AAPL in the query.

## When to prefer this

Choose this endpoint when you need on-demand, pay-per-use access to RapidAPI BB Finance data without committing to a subscription, especially in a web3/DeFi agent context where micropayments via x402 and USDC are preferred over traditional API key billing.

## Known failure modes

- Insufficient USDC balance causes payment failure and request is rejected before reaching upstream
- Invalid or unsupported path yields a 404 or upstream error response
- Malformed query parameters may cause upstream to return an error payload
- x402 facilitator unavailability blocks payment settlement and prevents request forwarding
- Rate limits or authentication issues on the upstream RapidAPI BB Finance tier return error codes

## How this service works

Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.

## Output

The raw upstream BB Finance API response body is passed through as-is, with the original content type preserved, after a successful $0.01 USDC 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-api-gateway-rapidapi-bb-finance-proxy-89ff84b8/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)