Mock sample for your project: SpectroCoin Merchant API

dropX.io API provides programmatic access to the e-commerce intelligence data.

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.

The price is a fundamental building block for your listing on Walmart.com. You can use the price management APIs to set up and manage the price for a given item

Just Eat API
Just Eat offers services for our various business partners and our consumer applications.
How you interact with the API depends on the services you wish to interact with.
Security
HTTPS
All api calls and callbacks require HTTPS. Your service will need a valid SSL certificate and be accessible via the standard SSL port (port 443).
Making an API request
Some API calls require an API key, to authenticate the partner calling the API.

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.

Note: This is a (Limited Release) API available only to select developers approved by business units. The Feed API provides the ability to download TSV_GZIP feed files containing eBay items and an hourly snapshot file of the items that have changed within an hour for a specific category, date and marketplace. In addition to the API, there is an open source Feed SDK written in Java that downloads, combines files into a single file when needed, and unzips the entire feed file. It also lets you specify field filters to curate the items in the file.

Maintaining up-to-date inventory for your items on Walmart.com ensures a great experience for your customers and greater sales opportunities for you.

Polls is a simple API allowing consumers to view polls and vote in them.

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

https://www.beanstream.com/api/v1

Hereafter is the documentation of the private API of Pims: Pointages Intelligents pour le Monde du Spectacle. This API is designed for 3rd-party softwares, editors and partners. Its main purpose is to give access the core data of a Pims customer (i.e. events, ticket counts and promotions).
Authentication
The API uses basic access authentication, meaning you will need a username and password to get authorized.
As each customer in Pims has its own domain (e.g. caramba.pims.io, gdp.pims.io...), each credentials will be valid for one domain/customer only. If you need dedicated credentials for one domain, please contact us. (In any case, we will need an explicit agreement from the customer before we create these credentials.)
To make your life easy, you can try all endpoints with the public credentials below, pointing to our demo domain:
Base path: https://demo.pims.io/api
Username: demo
Password: q83792db2GCvgYVdKpU3yG3R
Response format
The API returns JSON and matches the HAL specification. The Content-Type of each response will be application/hal+json, unless an error occurs.
Please note that this documentation describes all responses “as if” they were plain JSON. The specificities of HAL are ignored on purpose, in order to remain compact and avoid repetition.
So when you read in the doc:
{"id" : 123,"property1" :"Lorem ipsum","object" : {"id" : 456,"property2" : 7.89
}
}
... you'll get in the Real World®:
{"id" : 123,"property2" :"Lorem ipsum","embedded" : {"object" : {"id" : 456,"property2" : 7.89,"links" : {"self" : {"href" :"https://api.mydomain.com/other-item/456"
}
}
}
}"_links" : {"self" : {"href" :"https://api.mydomain.com/item/123"
}
}
}
Errors
Errors return JSON too and tries to match the Problem Details for HTTP APIs specification. If it does not match this spec, that's either a bug or a compatibility issue. Please contact us to solve the problem.
The Content-Type of errors will be application/problem+json. The content will match the following JSON:
Filtering and sorting
Every textual filter (e.g. /events?label=U2) and/or sort (e.g. /events?sort=label) performed with the API uses UTF8UNICODECI collation, meaning it is:
Case insensitive: “Chloé” will be considered the same as “CHLOÉ”;
Diacritic insensitive: “Chloé” will be considered the same as “Chloe”.
When performing a sort, it will always be ascending by default. To make it descending, just use a minus sign (-) in front of the parameter value (e.g. /events?sort=-label).
I18n
In responses, some labels can be translated (e.g. promotion types, event input types, etc.). These translatable labels are clearly indicated in the documentation below.
By default, they will be displayed in English, but you can change this behaviour via the Accept-Language header. E.g., use fr as a value for French.
PHP SDK
We provide a simple yet convenient SDK for the PHP language, see the Github page of the project.
And now?
Generaly, you will start by fetching one or more events. An event can be anything that occurs in one venue at one given date and time: a concert, a play, a match, a conference, etc. Additionnally, you can explore the series: a series is just a group of events (e.g. a tour or a festival).
Once you retrieved the events you were interested in, you can look for the sales ( ticket counts):
Get a quick overview with /events/:id/ticket-counts
Or get a full insight by calling these endpoints:
/events/:id/categories
/events/:id/channels
/events/:id/ticket-counts/detailed
Eventually, you may also want to fetch the promotions. A promotion can be anything meant to leverage the sales: ads, marketing campaigns, buzz or news around the event, etc. A promotion can be linked to any combination of events and/or series.

The Recommendation API returns information that sellers can use to optimize the configuration of their listings on eBay. Currently, the API contains a single method, findListingRecommendations. This method provides information that sellers can use to configure Promoted Listings ad campaigns to maximize the visibility of their items in the eBay marketplace.