# QuantaFlow x402 API Gateway – Rapid Traders Hub Trading Signals

> QuantaFlow x402 API Gateway – Rapid Traders Hub Trading Signals 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 the Rapid Traders Hub trading signals upstream service via x402 micropayment-gated API gateway, returning crypto/DeFi trading signals per call.

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/rapid-traders-hub-trading-signals5?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-x402-api-gateway-rapid-traders-hub-trading-signals-0f761f6d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NnTvJQP2nh6dGH-EQLlqQ

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-traders-hub-trading-signals-0f761f6d -d '<json body>'
```

Example prompt: Can you pull the latest buy/sell trading signals from Rapid Traders Hub for BTC/USDC right now — I want to know whether the signal is bullish or bearish before I make a move.

## When to prefer this

Choose this endpoint when you need on-demand, per-call crypto and DeFi trading signals from Rapid Traders Hub without a subscription, paying only $0.01 USDC per request via the x402 protocol. Prefer it over subscription-based signal services when you want low-commitment, pay-as-you-go access, or when integrating into an automated agent that calls signals only when needed. Not ideal if you require historical signal archives, real-time streaming, or zero-latency tick data.

## Known failure modes

- Payment failure: insufficient USDC balance or x402 payment not accepted — results in 402 Payment Required with no upstream data
- Upstream unavailable: Rapid Traders Hub service is down — gateway returns an error after payment may or may not be charged
- Invalid path or query: malformed path/query parameters result in upstream error responses passed through
- Schema mismatch: body not valid JSON causes upstream to return 400-level errors
- Rate limiting: upstream may throttle repeated rapid calls even with valid payments

## 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 from the Rapid Traders Hub trading signals service, passed through after successful x402 USDC micropayment, including trading signal data (buy/sell/hold indicators, asset, direction, confidence, etc.) and the content type of the response.

## 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-traders-hub-trading-signals-0f761f6d/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)