You can use mix hex.info PACKAGE_NAME to get the basic details such as versions etc.
$ mix hex.info ecto
A toolkit for data mapping and language integrated query for Elixir
Config: {:ecto, "~> 3.9"}
Locked version: 3.8.3
Releases: 3.9.1, 3.9.0, 3.8.4, 3.8.3, 3.8.2, 3.8.1, 3.8.0, 3.7.2, ...
Licenses: Apache-2.0
Links:
GitHub: https://github.com/elixir-ecto/ecto
