Thanks, I've been tooling away in my spare time on my own version of this -- both to get a deeper understanding of agents (everyone suggests writing your own) and to help learn Rust. I'd like to retain `pi`'s configurability though, the ability to self-mutate and generate new tools is incredibly useful, particularly because I don't think any of these things should have access to arbitrary code execution through `bash` (of course, if they have access to, say, `edit` and `cargo run` they still have arbitrary code exec, but...) (so I tend to generate tools on the fly when I encounter something the no-bash agent needs to do).

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gidellav 3 hours ago | parent | next [-]

I actually though about this issue, but while Pi can have this script-like environment thanks to the fact that it's based on an interpreted language (TypeScript), Rust has its own limitation as a compiled language.

I decided to allow for customization in a different way:

1. The prompt library (~/.config/hypernova/prompts/) acts as a simpler alternative to Skills, with the built-in prompts that should replace superpowers + Claude's frontend-design

2. Compile-time features; things that might make the agent more bloated can be disabled when you decide to compile zerostack

3. Clean code; code that's short and easy to read, you can just throw zerostack on its own source code in order to build a custom fork if your necessity can't be satisfied. Good features could also be adopted by the main version.

4. Permission mode; as you can see in the README, there was lots of concern around the permission model, and I landed on a 4-mode system that goes from "Restrictive" (no commands) to "YOLO" (whatever the agent wants to do" + custom regex patterns for allow/ask/deny permission on 'bash' calls. In your case, you just need to run `zerostack -R` to force all tools to ask for permission.

(Also, there is a work-in-progress features for programmable agents, but that's yet to be announced)

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frio 3 hours ago | parent [-]

I've been trying to use `Deno` underneath `Rust` so that the tools can still be written in Typescript and thus self-mutated without the compilation step (but I can still try to do clever things with V8 Isolates or similar). It's been an ugly experiment so far; I'm vaguely thinking a simpler model would be to just define a binary "API" and run tools by exec-ing binaries.

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gidellav 3 hours ago | parent | next [-]

I have to be honest and tell you that try to load such an heavy runtime as a scripting layer is not a great idea; at the same time I can tell you that I am working on another Rust project where I also needed scripting, and after three attempts I landed on rhai (https://rhai.rs/) (https://rhai.rs/book).

You might find it nice for pretty much all use cases except for high-performance scripting (so, if you are not try to build the entire logic entirely in rhai, you are going to be fine).

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frio 3 hours ago | parent | next [-]

Yeah, it's been a bit of a dead end. I didn't want the heavy runtime but felt it was worth disproving after experimenting rather than ruling out off the bat. Even before getting it running, the dependency list alone was pretty discouraging, especially given the storm of supply chain attacks these days.

Rhai looks nice, I'll take a look, thanks! And good luck with Zerostack.

	▲	aschar 2 hours ago \| parent [-]
		[dead]

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slopinthebag an hour ago | parent | prev [-]

I was just going to suggest rhai. It's simple enough LLMs can easily write it with a little context, and you control the entire API so you can sandbox effectively without needing to resort to hacks with a JS interpreter etc.

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BillStrong an hour ago | parent | prev | next [-]

Have you thought about Zig? If you limit it to CompTime, isn't that just a scripting language that happens to be compiled to binary?

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jswny 2 hours ago | parent | prev [-]

Why not WASM?

	▲	frio an hour ago \| parent [-]
		Unfamiliarity and I believe it requires a compile step. I’m at least familiar with Typescript and Deno so being able to embed them was an appealing idea :)

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praveer13 7 minutes ago | parent | prev [-]

I’ve been doing the same thing in zig haha.