eBay API

Shopping / OAuth Advanced HTTPS
Varies by plan (check documentation)

Overview

The eBay API gives you access to eBay's massive marketplace, letting you search listings, retrieve product details, manage inventory, and handle orders programmatically. It uses OAuth 2.0 for secure access and supports both buyer-facing and seller-facing operations. Developers use it to build price-tracking tools, seller dashboards, and cross-platform e-commerce integrations.

💡

Beginner Tip

Start with the Browse API, which is the simplest eBay API and does not require user authentication — just an app token from the developer portal. Use the /item_summary/search endpoint to search for listings before diving into the more complex Trading or Fulfillment APIs.

Available Data

Use case: Integrate sell and buy on ebay data into web and mobile applications
eBay data via REST API
JSON-formatted response data
Requires OAuth authentication

Example Response

JSON Response
{
  "status": "success",
  "data": {
    "result": "Data from eBay",
    "description": "Sell and Buy on eBay",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

itemId Unique eBay identifier for the listing, used to retrieve full item details
title Listing title as written by the seller
price.value Current listing price as a decimal string (e.g., "29.99")
price.currency ISO 4217 currency code for the price (e.g., USD, GBP)
condition Item condition such as NEW, USED, or REFURBISHED
seller.username eBay username of the seller offering the item

Implementation Example

const url = "https://developer.ebay.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "Authorization": "Bearer YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

401 Unauthorized Missing or expired OAuth app token or user token
Generate a fresh app token using the Client Credentials grant flow at developer.ebay.com
400 Invalid marketplace header The X-EBAY-C-MARKETPLACE-ID header is missing or set to an unsupported value
Include a valid marketplace ID header such as EBAY_US, EBAY_GB, or EBAY_DE in every Browse API request
403 Insufficient Permissions Your app scope does not include the permission required for the endpoint
Review the required OAuth scopes for the endpoint and re-authorize your app with the correct scopes in the developer portal

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 5/20
🔒 Security 15/15
🛠 Developer XP 3/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth OAuth
HTTPS REQUIRED
CORS UNKNOWN
Category Shopping
Difficulty Advanced
Verified: 2026-04-04

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