A connector is a component's data source. It tells Kubme where to read the data, how to write it and how to turn it into columns.

Every component you create (except Sites) automatically gets a built-in connector. By default, its data is stored in Kubme: the Kubme Connector, "Stored in Kubme database". There is nothing to set up to get started.
To plug in other sources, open the component's Configuration:
In the Source tab, you add an Additional Connector next to the default one, then give it actions: for example, reading the rows from your API. See Multi-source.
A standalone connector lives in your workspace, like a component. You create it once and reuse it in several components.
Unlike components, a standalone connector does not save on its own: click Save. If you leave before, Kubme asks Leave without saving? and restores your changes when you come back.
Kubme AI can read and edit a connector, import an OpenAPI specification and test an action: "Import our API's OpenAPI specification into the CRM connector and keep only the customer routes."
Menu › Import / Export: a .kubme file with the connector's configuration, without the credentials.