How does the application integrated with hashicorp pull the latest static secret that was updated in vault?

Maybe I am overlooking something but does the application integrated with hashicorp vault pull the latest static secret that was updated in vault?

In the scenario that we created a static KV e.g. an API key and that API key is manually updated within Vault by a user, how does the application get the latest key? Is there some automation within the API that will pull the latest secret?