What about skillscript is unique that couldn't be done with bash or python as a permissioned tool? (Trying to understand where you see the difference.)
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My original impression from the repo was that the language/toolkit is overengineered, but then I saw on the website that the intention is for the agents to write their own tools. That helps explain some of the complexity.
I think the rest of the perceived complexity is the over-explaining in the README.
I don't think anyone's going to really engage with all of that so you might have better luck chopping it down 80% to only highlight the stuff that matters.