# serp402 Walmart Product Sellers

> serp402 Walmart Product Sellers 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).

Returns a structured JSON list of all third-party sellers offering a specific Walmart product, optionally filtered by store location.

## Facts

- Endpoint: POST https://serp402.com/api/v1/walmart-product-sellers?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-sellers-f756f57b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0Go_kU8kzGK3Jg9-nciFd

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-sellers-f756f57b -d '<json body>'
```

Example prompt: Pull all the sellers currently listing Walmart product ID 1234567890 and show me their prices — I want to know who's cheapest.

## When to prefer this

Use this endpoint when you need to enumerate all marketplace sellers for a specific Walmart product by its us_item_id, especially for price comparison, competitive analysis, or inventory sourcing. It is particularly valuable when you want to filter seller results to a specific physical Walmart store. Prefer this over general Walmart search APIs when you already know the product ID and want seller-level detail rather than product discovery.

## Known failure modes

- Invalid or non-existent product_id returns empty results or error
- Invalid store_id may return no results or an error response
- Product with no third-party sellers returns empty seller array
- Walmart product page changes may temporarily break scraping
- Rate limiting or upstream Walmart blocks may cause failures
- Missing required product_id field results in a validation error

## How this service works

Walmart Sellers: Walmart Sellers 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

A structured JSON object containing a list of sellers for the specified Walmart product, including seller names, prices, conditions, shipping details, and availability information, optionally scoped to a specific Walmart store location.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "store_id": {
   "type": "string",
   "description": "Store ID to filter the products by the specific store only. Head to the Walmart Stores Locations for a full list of supported stores. It's possible for the…"
  },
  "product_id": {
   "type": "string",
   "description": "unique product identifier to get more seller options of a specific product. You need to pass the us_item_id . It can be found from either Organic Results API…"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/serp402-walmart-product-sellers-f756f57b/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)