diff --git a/README.md b/README.md
index ecae827..7f54b37 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,10 @@
 # ansible-hostcertificate
+This is intended to be used an an Ansible role
+Required vars
+VAULT_UNSEAL_KEY1
+VAULT_UNSEAL_KEY2
+VAULT_UNSEAL_KEY3
+VAULT_ADDR
+VAULT_TOKEN
+
+local_domainname