# API documentation

An API represents the communication capacity between components of one or several software systems and is a set of functions, methods and / or procedures that a library offers that can be accessed through a unique and private key (API KEY) for each client.

### Operation types and methods

An operation is a unit of a REST API that you can call. An operation comprises an HTTP verb and a URL path that is subordinate to the context of the API.

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Through the API developed by Alephee, you can access different operations, some query (GET) and others that allow the impact of changes on the platform (POST, PUT or DELETE).
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