# eBay Products by Category API

> eBay Products by Category API is a paid API for AI agents from x402.openwebninja.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Fetches real-time eBay product listings filtered by category ID, with support for sorting, price range, condition, and buying format filters

## Facts

- Endpoint: GET https://x402.openwebninja.com/real-time-ebay-data/products-by-category
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ebay-products-by-category-api-f49ecbb8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Qs2bjqYzkRCwdtvw-QqU7

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 ebay-products-by-category-api-f49ecbb8
```

Example prompt: Can you pull up real-time eBay listings in the electronics category (category ID 293) sorted by lowest price, only buy-it-now listings, between $50 and $300, on page 1?

## When to prefer this

Use this endpoint when you need real-time eBay product listings scoped to a specific category, with rich filtering options like price range, condition, buying format, and sorting. Prefer this over generic product search when you already know the eBay category ID and need structured product data including seller metrics.

## Known failure modes

- Missing required category_id parameter returns validation error
- Invalid category_id returns empty results or 404
- Page number out of range (>100) fails validation
- Invalid sort_by enum value rejected
- eBay API rate limits or downtime cause upstream errors
- Payment of 0.003 USDC not processed results in 402 response

## 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

Returns a paginated list of real-time eBay product listings including titles, prices, original prices, discounts, item URLs, images, seller names, seller feedback counts and percentages, top-rated seller flags, conditions, shipping info, buying formats, free returns status, item locations, plus category name, subcategories, available brands, total result count, and results per page.

## 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/ebay-products-by-category-api-f49ecbb8/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)