# QuantaFlow Walmart Product Reviews SERP API

> QuantaFlow Walmart Product Reviews SERP 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 2026-10-24).

Fetches Walmart product reviews via a pay-per-call x402 gateway, returning SERP-style review data for a given product.

## Facts

- Endpoint: POST https://quanta-roan.vercel.app/api/service/serp-walmart-product-reviews?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quantaflow-walmart-product-reviews-serp-api-3a799518
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3GZlcLi-TgTNmezXjJiG9

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-walmart-product-reviews-serp-api-3a799518 -d '<json body>'
```

Example prompt: Can you pull the customer reviews for Walmart product ID 123456789 — I want to see the ratings, review text, and dates so I can analyze what shoppers are saying about it?

## When to prefer this

Choose this endpoint when you need programmatic access to Walmart product reviews at low cost ($0.01 per call) and want to integrate review data into e-commerce analytics, sentiment analysis, or competitive research pipelines without managing Walmart scraping infrastructure yourself.

## Known failure modes

- Invalid or non-existent Walmart product ID returns empty results or 404
- Payment failure via x402 protocol results in 402 response and no data
- Rate limiting or upstream Walmart blocking returns an error or partial data
- Malformed request body causes 400 bad request
- Product with no reviews returns empty review array

## How this service works

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

## Output

Returns a structured payload of Walmart product review data including reviewer names, star ratings (1-5), review titles, review body text, review dates, and helpfulness votes, mirroring what appears on Walmart's product review pages.

## 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-walmart-product-reviews-serp-api-3a799518/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)