# Amazon Best Sellers by Category

> Amazon Best Sellers by Category is a paid API for AI agents from openwebninja-x402.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Fetches the current Amazon best sellers list for a specified product category and country.

## Facts

- Endpoint: GET https://openwebninja-x402.vercel.app/api/amazon/best-sellers
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/amazon-best-sellers-by-category-61ff344a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oDoVgHdWTqHgm_Fr7AVX9

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 amazon-best-sellers-by-category-61ff344a
```

Example prompt: What are the top best-selling products in the Electronics category on Amazon US right now? Show me page 1 of results.

## When to prefer this

Use this endpoint when you need to discover what products are currently trending or best-selling on Amazon within a specific category, especially when you need country-specific rankings. Prefer this over a keyword search endpoint when the goal is to find popular/trending items rather than searching for a specific product.

## Known failure modes

- Missing required 'category' parameter returns a validation error
- Invalid or unsupported country code returns an error
- Page number out of range may return empty results or an error
- Payment failure (insufficient USDC balance) blocks the request
- Category string that doesn't match Amazon's taxonomy may return empty or irrelevant results
- Rate limiting or upstream Amazon data unavailability may cause timeouts

## How this service works

Fetch Amazon best sellers by category.

## Output

A ranked list of Amazon best-selling products for the specified category and country, including product names, ASINs, prices, ratings, and ranking positions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "category"
     ],
     "properties": {
      "page": {
       "type": "integer",
       "maximum": 9007199254740991,
       "minimum": 1
      },
      "country": {
       "enum": [
        "US",
        "AU",
        "BR",
        "CA",
        "CN",
        "FR",
        "DE",
        "IN",
        "IT",
        "MX",
        "NL",
        "SG",
        "ES",
        "TR",
        "AE",
        "GB",
        "JP",
        "SA",
        "PL",
        "SE",
        "BE",
        "EG",
        "ZA",
        "IE"
       ],
       "type": "string"
      },
      "category": {
       "type": "string",
       "minLength": 1
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/amazon-best-sellers-by-category-61ff344a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from openwebninja-x402.vercel.app](https://www.zero.xyz/host/openwebninja-x402.vercel.app/llms.txt)