# QuantaFlow Google SERP Autocomplete API

> QuantaFlow Google SERP Autocomplete API is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Fetches Google Search autocomplete suggestions for a given query term via a pay-per-call x402 gateway

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/serp-google-autocomplete?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-google-serp-autocomplete-api-d931c909
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lkvgw7Pw88HcKS6os_541

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-serp-autocomplete-api-d931c909 -d '<json body>'
```

Example prompt: Can you get me Google autocomplete suggestions for the search query 'best running shoes for'? I need to see what Google predicts people are searching for.

## When to prefer this

Choose this endpoint when you need programmatic access to Google Search autocomplete suggestions on a pay-per-use basis without a long-term API subscription, particularly useful for lightweight keyword research, SEO tooling, or AI agents with variable query volumes that benefit from $0.01 micropayment pricing over flat-rate plans.

## Known failure modes

- Payment failure: insufficient USDC balance or x402 payment not accepted, resulting in 402 Payment Required
- Empty results: query string too short or ambiguous returning no suggestions
- Rate limiting: upstream Google autocomplete throttling requests
- Invalid path or query parameters causing malformed upstream request
- Network timeout from upstream Google service

## How this service works

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

## Output

Returns the upstream Google autocomplete response containing an array of predicted search query completions for the provided input query, passed through directly from Google's autocomplete API after successful x402 micropayment processing.

## 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-serp-autocomplete-api-d931c909/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)