# QuantaFlow SERP Google Light - x402 API Gateway

> QuantaFlow SERP Google Light - x402 API Gateway is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Performs lightweight Google search engine results page (SERP) queries via a pay-per-call x402 micropayment gateway for $0.01 USDC per request.

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/serp-google-light?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-serp-google-light-x402-api-gateway-6b045b50
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_89u5plTSN3NKEJTj_-v33

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-google-light-x402-api-gateway-6b045b50 -d '<json body>'
```

Example prompt: Search Google for 'best open source LLMs in 2025' and give me the top organic results — titles, URLs, and snippets.

## When to prefer this

Choose this endpoint when you need lightweight, per-query Google SERP data with micropayment billing (no subscription required) via x402 protocol — ideal for AI agents that need occasional web search grounding without a long-term API contract, or for web3-native applications already using x402 payment flows.

## Known failure modes

- Payment failure: x402 payment not accepted or insufficient USDC balance, returns payment-required error
- Invalid query: malformed path or query parameters result in upstream error
- Upstream timeout: Google SERP provider is slow or unavailable, resulting in gateway timeout
- Rate limiting: too many requests in a short window may result in upstream throttling
- Empty results: rare queries may return no organic results

## How this service works

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

## Output

Returns the upstream Google SERP response body passed through after successful x402 micropayment — typically includes organic search result titles, URLs, snippets, and position data in the format provided by the underlying 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-serp-google-light-x402-api-gateway-6b045b50/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)