Developing your APIs and applications
You develop APIs and LoopBack® applications by using the IBM® API Connect developer toolkit.
The API Connect developer toolkit provides both the API Designer user interface and a command line interface that you can use to develop APIs and LoopBack applications and publish them to API Connect.
You publish APIs by including them in a Product and then publishing the Product. You define your APIs and Products by creating and validating YAML definition files in your local file system. You can then interact with API Connect by using either the API Designer or the toolkit commands.
Note: In the
Help page of the Cloud Manager,
API Manager, and API Designer user interfaces,
there's a Product information tile that you can click to find out information
about your product versions, as well as Git information about the package versions being used. Note
that the API Designer product
information is based on its associated management server, but the Git information is based on where
it was downloaded from.

The developer toolkit is described in detail in the following subsections: