Is there an open-source tool to bulk-generate wireguard configurations without managing the wireguard installation itself?

I have an existing server set up with a special wireguard configuration that I created manually. I want to add a standard VPN server configuration to that machine without affecting the existing configuration. I’ve used tools for this in the past, but they all work on the premise that wireguard isn’t already installed and that only said tool is used to managed the installation. I’m worried this might break my existing config, so what I want is something to automate generating keys and writing configuration files, without interacting with the existing wireguard installation. Does this exist?