What are the best Catalog API - Seller Portal alternatives? (2026)

The <i>Analytics API</i> provides data and information about a seller and their eBay business. <br><br>The resources and methods in this API let sellers review information on their listing perform...

The <b>Analytics API</b> retrieves call-limit data and the quotas that are set for the RESTful APIs and the legacy Trading API. <br><br>Responses from calls made to <b>getRateLimits</b> and <b>get...

API provided by apple.com

REST API for Argo profiles, platforms, selections, BGC data, gridded products, etc.

Use this api to fetch information to Amazon products and more.

Products, Buying Options, Categories, Recommendations, Stores and Commerce

The Browse API has the following resources: item_summary: Lets shoppers search for specific items by keyword, GTIN, category, charity, product, or item aspects and refine the results by using filte...

The Marketing API retrieves eBay products based on a metric, such as Best Selling, as well as products that were also bought and also viewed.

A modern API for Amazon Data

The Charity API allows third-party developers to search for and access details on supported charitable organizations.

Service for providing information to sellers about their listings being non-compliant, or at risk for becoming non-compliant, against eBay listing policies.

China's major book and general e-commerce platform — products, orders, store management

<span class="tablenote"><b>Note:</b> This is a <a href="https://developer.ebay.com/api-docs/static/versioning.html#limited" target="_blank"> <img src="/cms/img/docs/partners-api.svg" class="legend-...

Retrieve price and inventory of electronic components as well as place orders

All around e-commerce APIs. Generate QR codes, product categories and thumbnails, barcodes and many more.

Sell and Buy on eBay

Manage shop and interact with listings

Extpose — in‑store performance analytics and optimization tool for Chrome extensions. [https://extpose.com](https://extpose.com)

<p>The <strong>Feed API</strong> lets sellers upload input files, download reports and files including their status, filter reports using URI parameters, and retrieve customer service metrics task ...

Product listing management, Order Fulfilment in the Flipkart Marketplace

Use the Fulfillment API to complete the process of packaging, addressing, handling, and shipping each order on behalf of the seller, in accordance with the payment method and timing specified at ch...

>ℹ️ Onboarding guide > > Check the new [Search onboarding guide](https://developers.vtex.com/docs/guides/search-overview). We created this guide to improve the onboarding experience for developer...

<span class="tablenote"><b>Note:</b> This is a <a href="https://developer.ebay.com/api-docs/static/versioning.html#limited " target="_blank"> <img src="/cms/img/docs/partners-api.svg" class="legend...

China's second-largest e-commerce platform API — products, orders, logistics with Java/PHP/.NET SDKs

Retrieve product ratings and seller performance metrics

> Check the new [Search onboarding guide](https://developers.vtex.com/vtex-rest-api/docs/search-onboarding). We created this guide to improve the onboarding experience for developers at VTEX. It ...

<span class="tablenote"><b>Note:</b> This is a <a href="https://developer.ebay.com/api-docs/static/versioning.html#limited" target="_blank"> <img src="/cms/img/docs/partners-api.svg" class="legend-...

<span class="tablenote"><b>Note:</b> This is a <a href="https://developer.ebay.com/api-docs/static/versioning.html#limited" target="_blank"> <img src="/cms/img/docs/partners-api.svg" class="legend-...

<p>The <i>Marketing API </i> offers two platforms that sellers can use to promote and advertise their products:</p> <ul><li><b>Promoted Listings</b> is an eBay ad service that lets sellers set up <...

Manage sales, ads, products, services and Shops

The Metadata API has operations that retrieve configuration details pertaining to the different eBay marketplaces. In addition to marketplace information, the API also has operations that get infor...

The <b>Negotiations API</b> gives sellers the ability to proactively send discount offers to buyers who have shown an "interest" in their listings. <br><br>By sending buyers discount offers on lis...

Electronic part data for manufacturing, design, and sourcing

Integrate with local sites by posting, managing adverts and communicating with OLX users

>Check the new [Orders onboarding guide](https://developers.vtex.com/docs/guides/orders-overview). We created this guide to improve the onboarding experience for developers at VTEX. It assemble...

A fake store API for your e-commerce or shopping website prototype. For testing and learning

This API will create promotion alarms when selling products with undesired prices and promotions. It will create conditions that will check if the prices and the promotions are correct. If not, ...

Printful's official API to manage and integrate their services

Printify's official API to manage and integrate their services

Manage orders from Rappi's app

The RGD REST API provides programmatic access to information and annotation stored in the Rat Genome Database

The <b>Recommendation API</b> returns information that sellers can use to optimize the configuration of their listings on eBay. <br><br>Currently, the API contains a single method, <b>findListingRe...

A sample API for testing the API Fuzzer tool

The SCIM API lets you manage users in your organization. You can then automate the provisioning of product licenses for these users, and they can use your company's Single Sign-On solution through ...

Affordable, Swift, and Reliable Amazon Data in Real-Time

This documentation goes in detail how to interact with Session Manager's API. For a more top-level approach, check the [design documentation](https://help.vtex.com/tutorial/using-session-manager-to...

Shopee's official API for integration of various services from Shopee

Manage sales channels, customers, products, and discounts for a retail business

Major Chinese electronics and retail platform — Java, PHP, .NET, Python SDKs

Alibaba's consumer marketplace — the world's largest e-commerce platform API with Java, .NET, PHP, Python SDKs

Use the Taxonomy API to discover the most appropriate eBay categories under which sellers can offer inventory items for sale, and the most likely categories under which buyers can browse or search ...

Tokopedia's Official API for integration of various services from Tokopedia

This API allows 3rd party developers to translate item title, description, search query.

WooCommerce REST APIS to create, read, update, and delete data on wordpress website in JSON format