What's the difference? if you're the one writing the Python and approving each script, probably little. The difference shows up when the agent writes it unattended, over and over. Skillscript can only reach the binaries and tools I allowlisted, where I allowlisted them. An agent can't escalate by writing something clever that get by me.
I think you're right on. I let the readme get out of hand. It became a README, changelog mash-up. Going to rewrite it, and the 80% metric is a good one. Is there an example of what you consider the perfect readme?