# QuantaFlow Google Shopping SERP Search

> QuantaFlow Google Shopping SERP Search is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Fetches Google Shopping search engine results page (SERP) data via a pay-per-call x402 gateway for $0.01 USDC

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/serp-google-shopping?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-google-shopping-serp-search-181420f8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ke6P6Y8UB1hhb9cYdvCTJ

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-google-shopping-serp-search-181420f8 -d '<json body>'
```

Example prompt: Search Google Shopping for 'wireless noise-cancelling headphones under $100' and give me the top product listings with prices and merchant names.

## When to prefer this

Choose this endpoint when you need programmatic access to Google Shopping SERP data on a pay-per-call basis without a monthly subscription, especially in Web3/crypto-native agent workflows where micropayments via x402/USDC are preferred over traditional API key billing.

## Known failure modes

- Payment failure if USDC balance is insufficient or x402 payment header is missing
- Invalid or malformed query parameters result in upstream errors
- Rate limiting or blocking by upstream Google Shopping SERP service
- Empty results if the search query returns no shopping listings
- Upstream proxy service unavailability causes 5xx errors

## How this service works

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

## Output

The raw upstream Google Shopping SERP response, including product listings, prices, merchant names, ratings, and other structured shopping data as returned by the proxied SERP service.

## 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-google-shopping-serp-search-181420f8/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)