appstream binary package in Ubuntu Focal amd64

 AppStream is a metadata specification, allowing to write metadata for
 software projects in a standardized format.
 It provides facilities to easily access and transform the data, as well
 as a few additional services to allow building feature-rich software center
 applications.
 .
 This package provides tools to generate, maintain and query the AppStream
 data pool of installed and available software, and enables integration
 with the APT package manager.
 .
 The 'appstreamcli' tool can be used for accessing the software component
 pool as well as for working with AppStream metadata directly, including
 validating it for compliance with the specification.

Source package