The command line.
One program, dokkit, on each machine you want watched. It is also what you use in an app's repo. This page is the program's own help: dokkit help prints the list and dokkit help <command> says more about one.
Hand this page to an AI tool
https://dokkit.dev/cli.mdDownload it as Markdown, or give it everything in one file.
Try it with no server
dokkit check runs every check in a dokkit.toml once and prints exactly what would be sent. Nothing leaves the machine.