Mock sample for your project: ecwid API

A product library is a representation of all the items that can be
displayed, put in a shopping cart and sold to a customer. Items may be
either producs or discounts.
A product is a synthetic construct, wrapping one or more variants (which is
the actual item being sold) Variants expresses different variations of
properties such as for example price, size or color. A discount will reduce
the total amount charged in a shopping cart. It can be used per item line,
or on the whole cart. It may reduce the affected amount by a percentage, or
by a fixed amount.
Together, the above types of entities makes up a complete library. The
library can be fetched as a whole through the library endpoint, where each
consecutive change applied to the library is available. Once the full
library is retrieved, only later events needs to be fetched to keep the
client up to date with the server
All path patterns "/organizations/{organizationUuid}/" can be replaced
with "/organizations/self/" for convenience as all endpoints are for
authorized users.

Please make sure you use the correct version of the APIs for your use case. To find out the appropriate version, go to the API Docs drop down on the menu.

Online payment fraud detection service. It helps merchants to minimize chargebacks and therefore maximize the revenue. It can be used to detect fraud for various kinds of payment method, such as credit card, paypal, cod and so on. Please visit https://www.fraudlabspro.com to learn more.

The Analytics API provides data and information about a seller and their eBay business. The resources and methods in this API let sellers review information on their listing performance, metrics on their customer service performance, and details on their eBay seller performance rating. The three resources in the Analytics API provide the following data and information: Customer Service Metric – Returns data on a seller's customer service performance as compared to other seller's in the same peer group. Traffic Report – Returns data that shows how buyers are engaging with a seller's listings. Seller Standards Profile – Returns data pertaining to a seller's performance rating. Sellers can use the data and information returned by the various Analytics API methods to determine where they can make improvements to increase sales and how they might improve their seller status as viewed by eBay buyers. For details on using this API, see Analyzing seller performance.

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

The REST API of BeezUP system
Overview
The REST APIs provide programmatic access to read and write BeezUP data.
Basically, with this API you will be able to do everything like you were with your browser on https://go.beezup.com !
The main features are:
Register and manage your account
Create and manage and share your stores with your friends/co-workers.
Import your product catalog and schedule the auto importation
Search the channels your want to use
Configure your channels for your catalogs to export your product information:
cost and general settings
category and columns mappings
your will be able to create and manage your custom column
put in place exlusion filters based on simple conditions on your product data
override product values
get product vision for a channel catalog scope
Analyze and optimize your performance of your catalogs on all yours channels with different type of reportings by day, channel, category and by product.
Automatize your optimisation by using rules!
And of course... Manage your orders harvested from all your marketplaces:
Synchronize your orders in an uniformized way
Get the available actions and update the order status
...and more!
Authentication credentials
The public API with the base path /v2/public have been put in place to give you an entry point to our system for the user registration, login and lost password. The public API does not require any credentials.
We give you the some public list of values and public channels for our public commercial web site www.beezup.com.
The user API with the base path /v2/user requires a token which is available on this page:
https://go.beezup.com/Account/MyAccount
Things to keep in mind
API Rate Limits
The BeezUP REST API is limited to 100 calls/minute.
Media type
The default media type for requests and responses is application/json. Where noted, some operations support other content types. If no additional content type is mentioned for a specific operation, then the media type is application/json.
Required content type
The required and default encoding for the request and responses is UTF8.
Required date time format
All our date time are formatted in ISO 8601 format: 2014-06-24T16:25:00Z.
Base URL
The Base URL of the BeezUP API Order Management REST API conforms to the following template.
https://api.beezup.com
All URLs returned by the BeezUP API are relative to this base URL, and all requests to the REST API must use this base URL template.
You can test our API on https://api-docs.beezup.com/swagger-ui\\
You can contact us on gitter, #BeezUP/API

API2Cart

Note: This is a (Limited Release) API available only to select developers approved by business units. Enables a seller adding an ad or item on a Partner's site to automatically create an eBay listing draft using the item details from the Partner's site.

The Browse API has the following resources: itemsummary: Lets shoppers search for specific items by keyword, GTIN, category, charity, product, or item aspects and refine the results by using filters, such as aspects, compatibility, and fields values. (Experimental) searchbyimage: Lets shoppers search for specific items by image. You can refine the results by using URI parameters and filters. item: Lets you retrieve the details of a specific item or all the items in an item group, which is an item with variations such as color and size and check if a product is compatible with the specified item, such as if a specific car is compatible with a specific part. Provides a bridge between the eBay legacy APIs, such as Finding, and the RESTful APIs, which use different formats for the item IDs. (Experimental) shoppingcart: Provides the ability for eBay members to see the contents of their eBay cart, and add, remove, and change the quantity of items in their eBay cart. Note: This resource is not available in the eBay API Explorer. The itemsummary, searchbyimage, and item resource calls require an Application access token. The shoppingcart resource calls require a User access token.