diff --git a/_posts/2023-10-04-library-apis.md b/_posts/2023-10-04-library-apis.md index acc9bf8..6430e87 100644 --- a/_posts/2023-10-04-library-apis.md +++ b/_posts/2023-10-04-library-apis.md @@ -10,6 +10,8 @@ customjs: Libraries provides different application programming interfaces (APIs) that allows users to access library data programmatically, e.g. via a script. The APIs can be implementation of widely used specification, which are available in many libraries, or custom interfaces which are available in particular institutions. APIs have three important layers: + + 1. the specification of the service. It describes how the data can be accessed (in some cases also how to create, modify or delete), whether the particular _call_ (an individual functionality of the service) requires authentication and authorization. 2. client libraries for particular language and tools that work on the command line or have a graphical user interface 3. the access points and terms of use at a particular library.