# QuantaFlow x402 API Gateway – Rapid Investing & Cryptocurrency Markets

> QuantaFlow x402 API Gateway – Rapid Investing & Cryptocurrency Markets 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 requests to a rapid investing and cryptocurrency markets data upstream service via the x402 micropayment protocol, charging $0.01 USDC per call.

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/rapid-investing-cryptocurrency-markets?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-x402-api-gateway-rapid-investing-cryptocurrency-markets-d47219be
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rJZwYQXStw-Psk6uaGJYS

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-rapid-investing-cryptocurrency-markets-d47219be -d '<json body>'
```

Example prompt: Can you pull the latest market data for Bitcoin and Ethereum — price, market cap, and 24-hour volume — using the QuantaFlow crypto markets gateway?

## When to prefer this

Choose this endpoint when you need cryptocurrency or rapid investing market data and are operating in a web3/DeFi context where micropayment-per-call via x402 protocol is acceptable. It is suitable for agents that already manage USDC wallets and want pay-as-you-go access to crypto market data without API key subscriptions.

## Known failure modes

- Payment failure: insufficient USDC balance causes 402 Payment Required with no data returned
- Invalid path: upstream returns 404 if the requested crypto market path does not exist
- Upstream timeout: the proxied data provider is slow or unavailable, resulting in a gateway timeout
- Malformed query: incorrect query parameters forwarded to upstream return an error response
- Rate limiting: upstream provider throttles requests beyond allowed frequency

## 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 cryptocurrency/investing markets data provider, passed through transparently after the x402 micropayment of $0.01 USDC is settled. Typically includes market data such as prices, volumes, market caps, or other investing metrics depending on the path queried.

## 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-rapid-investing-cryptocurrency-markets-d47219be/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)