# QuantaFlow SERP Amazon Search via x402

> QuantaFlow SERP Amazon Search via x402 is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Performs Amazon product search (SERP) queries and returns results, billed at $0.01 USDC per call via the x402 micropayment protocol.

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/serp-amazon?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-serp-amazon-search-via-x402-1f949744
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rj0gfSz0fgjzp5IPHc6XU

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-serp-amazon-search-via-x402-1f949744 -d '<json body>'
```

Example prompt: Search Amazon for 'wireless noise-cancelling headphones' and bring back the top product listings including titles, prices, and ratings.

## When to prefer this

Choose this endpoint when you need programmatic access to Amazon product search results (SERP) on a per-query pay-as-you-go basis using USDC micropayments via x402, without requiring a subscription or API key — ideal for agents that need occasional Amazon lookups without committing to a traditional API plan.

## Known failure modes

- Payment failure: x402 payment not accepted or insufficient USDC balance returns payment error
- Invalid query: malformed path or query parameters may return an empty or error response
- Upstream SERP provider unavailable: gateway may return 502 or 503
- No results found: search term returns empty product list
- Rate limiting: too many requests in short window may be throttled

## How this service works

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

## Output

Returns the upstream Amazon SERP response body — typically a list of product listings including product titles, prices, ratings, review counts, ASINs, and other search-result metadata, passed through directly from the underlying SERP data provider.

## 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-serp-amazon-search-via-x402-1f949744/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)