vagrant/website/source/docs/boxes/info.html.md

layout	page_title	sidebar_current	description
docs	Box Info Format	boxes-info	A box can provide additional information to the user by supplying an info.json file within the box.

Additional Box Information

When creating a Vagrant box, you can supply additional information that might be relevant to the user when running vagrant box list -i. For example, you could package your box to include information about the author of the box and a website for users to learn more:

brian@localghost % vagrant box list -i
hashicorp/bionic64     (virtualbox, 1.0.0)
  - author: brian
  - homepage: https://www.vagrantup.com

Box Info

To accomplish this, you simply need to include a file named info.json when creating a base box which is a JSON document containing any and all relevant information that will be displayed to the user when the -i option is used with vagrant box list.

{
 "author": "brian",
 "homepage": "https://example.com"
}

There are no special keys or values in info.json, and Vagrant will print each key and value on its own line.

The Box File Format provides more information about what else goes into a Vagrant box.