The Online Accounts API allows applications to access the user's accounts in order to perform tasks such as OAuth authentication or plain password retrieval.
Given the wide variety of environment in which this system has been deployed, with different scopes, UI flows and security policies, it's unpractical to present here a tutorial or a developer guide: for that, the developer is invited to consult the documentation provided by the SDK in use.
This pages contain the reference documentation for the API and manifest files used by this module.