# QuantaFlow Google Trends SERP API (x402)

> QuantaFlow Google Trends SERP API (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 2026-10-16).

Fetches Google Trends search data via a pay-per-call x402 protocol gateway at $0.01 USDC per request

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/serp-google-trends?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-google-trends-serp-api-x402-55b16401
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IAWnsEyMfsj3ev64em12z

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-trends-serp-api-x402-55b16401 -d '<json body>'
```

Example prompt: Can you pull Google Trends data for 'electric vehicles' over the past 12 months worldwide so I can see how search interest has changed?

## When to prefer this

Choose this endpoint when you need programmatic access to Google Trends data and are operating in a web3/crypto-native environment where micropayment-per-call billing via x402 protocol is preferred over subscription-based API keys. Ideal for agents that need on-demand trend lookups without managing API subscriptions, especially in DeFi-adjacent workflows.

## Known failure modes

- Payment failure if insufficient USDC balance or x402 wallet not configured
- Upstream SERP provider rate limit or unavailability returns error passthrough
- Invalid or malformed query parameters result in upstream error response
- Empty results if query term has no measurable search interest
- Timeout if upstream Google Trends data takes too long to fetch

## How this service works

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

## Output

Returns Google Trends SERP data including interest-over-time scores, related queries, related topics, and geographic breakdown for the specified keywords and time range, passed through directly from the upstream SERP provider after payment is processed.

## 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-trends-serp-api-x402-55b16401/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)