There are a few Functions that are common between all connector types:

Method	Description
makeApiClient	Configures how your connector makes API requests to the external service, including authentication headers, base URL, and other settings.
getCredentialsFromConnectionParameters	(optional) Transforms user-provided connection parameters into the credential format required for authentication.
refreshCredentials	(optional) Defines how to refresh expired or invalid authentication credentials without requiring user intervention.
test	(optional, but recommended) Validates if authentication credentials are working correctly by making a test API request.
disconnect	(optional) Revokes access tokens or performs cleanup with the external service when a connection is disconnected.

For functions specific to connector type, see a specific article inside Connector Types.