# OpenWeb Ninja — Amazon Best Sellers API

> OpenWeb Ninja — Amazon Best Sellers API is a paid API for AI agents from x402.openwebninja.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns real-time Amazon best-seller product rankings and data for a given category or department

## Facts

- Endpoint: GET https://x402.openwebninja.com/realtime-amazon-data/best-sellers
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/openweb-ninja-amazon-best-sellers-api-3efe3a0d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rXvE-l7ekcDIP372AxOUS

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 openweb-ninja-amazon-best-sellers-api-3efe3a0d
```

Example prompt: Can you pull the current Amazon best sellers in the electronics category so I can see which products are ranking at the top right now?

## When to prefer this

Choose this endpoint when you need real-time Amazon best-seller rankings without setting up an account or API key, and want to pay per call with USDC via x402. It is ideal for ad-hoc market research, price monitoring agents, or e-commerce intelligence workflows where Amazon product popularity data is needed on demand without a subscription commitment.

## Known failure modes

- Invalid or unrecognized category parameter returns empty or error response
- Amazon temporarily blocks or throttles scraping resulting in incomplete data
- Response schema may vary by category or be empty if Amazon changes its structure
- Payment failure via x402 protocol prevents request from completing
- Rate limiting if many requests are made in rapid succession

## How this service works

40+ public web-data, SERP, e-commerce, real-estate, finance and AI-search APIs, payable per call over x402 (USDC on Base, Polygon, Arbitrum). No account or API key required. Most endpoints $0.003; AI-model endpoints $0.005.

## Output

A JSON response containing a ranked list of Amazon best-selling products in the requested category, typically including product titles, ASINs, prices, ratings, review counts, and sales rank positions as available from Amazon's real-time data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/openweb-ninja-amazon-best-sellers-api-3efe3a0d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.openwebninja.com](https://www.zero.xyz/host/x402.openwebninja.com/llms.txt)