This is a lookup plugin for using EnvKey as a secret store with Ansible.
Checkout this repo wherever you like and then point to it in your ansible.cfg file. eg:
[defaults]
lookup_plugins = ~/.ansible/ansible-envkey/lookup_plugins/
You can use this like any other lookup plugin, for example, to get the Redis password in your group_vars you can do this...
redis_password: "{{ lookup('envkey','REDIS_PASSWORD') }}"