# serp402 Walmart Product Reviews

> serp402 Walmart Product Reviews is a paid API for AI agents from serp402.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-31).

Fetches paginated, filterable customer reviews for a Walmart product by its item ID, returned as structured JSON.

## Facts

- Endpoint: POST https://serp402.com/api/v1/walmart-product-reviews?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/serp402-walmart-product-reviews-afbbd77e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IVSgBpoimssnT9X4B_pE0

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 serp402-walmart-product-reviews-afbbd77e -d '<json body>'
```

Example prompt: Pull the most helpful customer reviews for Walmart product ID 204839201 — I want page 1, sorted by helpful, and only show 5-star reviews.

## When to prefer this

Use this endpoint when you need structured, machine-readable Walmart customer review data for a specific product — especially useful for e-commerce analytics, sentiment analysis, price-comparison tools, or reseller research. Prefer this over manual scraping when you need paginated or rating-filtered results without managing Walmart's anti-bot measures. Best suited for workflows that already have a Walmart us_item_id (e.g. from an Organic Results API call).

## Known failure modes

- Invalid or non-existent product_id returns empty results or an error
- Invalid sort parameter value may return an error or default sort
- Invalid rating filter value may cause an error or return unfiltered results
- Page number beyond available pages returns empty review list
- Payment failure (insufficient USDC balance) blocks the request
- Rate limiting or upstream Walmart blocking may cause timeouts

## How this service works

Walmart Reviews: Walmart Reviews results, returned as JSON. Structured JSON, USD 0.05 per call in USDC — no API key, no account, no subscription, no minimum. Not affiliated with, endorsed by or an official channel of any of the services the results come from. All trademarks and copyright remain the property of their respective owners.

## Output

Returns a structured JSON object containing paginated customer reviews for the specified Walmart product, including review text, star ratings, reviewer metadata, submission dates, helpfulness votes, and sort/filter context.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "page": {
   "type": "string",
   "description": "Value is used to get the reviews on a specific page. (e.g., 1 (default) is the first page of results, 2 is the 2nd page of results, 3 is the 3rd page of…"
  },
  "sort": {
   "type": "string",
   "description": "Parameter is used for sorting reviews. It can be set to: relevancy , helpful , submission-desc , submission-asc , rating-desc , rating-asc"
  },
  "rating": {
   "type": "string",
   "description": "Parameter is used for filtering reviews by rating. It can be set to: 1 : 1-star, 2 : 2-star, 3 : 3-star, 4 : 4-star, 5 : 5-star."
  },
  "product_id": {
   "type": "string",
   "description": "unique product identifier to get reviews of a specific product. You need to pass the us_item_id . It can be found from either Organic Results API or Product…"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/serp402-walmart-product-reviews-afbbd77e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from serp402.com](https://www.zero.xyz/host/serp402.com/llms.txt)