This is basically a package repo of WASM file(s), which seem to have been compiled from Rust source mostly, but other language that can be compiled to WASM would work too.

And from what I've read the CLI downloads the WASM and runs it. The "runs it" part is interesting, as it's cross platform - so does it run a JS engine, e.g like V8 or NodeJS?

I don't personally like the idea, esp since Rust can compile to all those supported platforms anyway, and the native code would be so much faster.

It says on the website that it is opensource, since 2019, but the Github account has zero repos.

The website looks flash, but has many spelling errors and typos, and so if little things like this get through after 3 years of development, then the chances of malicious code getting through is very high.