I wrote Zig bindings to quickjs-ng with 96% API coverage (~240 exported C decls) with unit tests, examples, and doc strings on all functions in less than 6 total hours with AI assistance. I never want to hear that AI isn't faster ever again. https://github.com/mitchellh/zig-quickjs-ng
This isn't slop. I worked for those 6 hours.
I was reviewing everything it outputted, updating my AGENTS.md to course correct future work, ensuring the output was idiomatic Zig, writing my own tests on the side to verify its work (while it worked), and more. My work was split across ~40 separate Amp threads (not one mega session, which doesn't work anyways unless you're orchestrating).
I have a ton of experience writing bindings to libraries for various languages, especially Zig. I have never achieved this much coverage in so little time with such high quality (e.g. test coverage). My usual approach is to get bind just-enough of the surface area to do my actual work and move on. This time I thought I'd draw the whole owl, because it's a new world. And I'm very happy with the result.
Anyone with experience writing bindings knows that you do some small surface area, then the rest of the coverage is annoying repetition. That's why I usually stopped. Well, LLMs/agents are really, really good at annoying repetition and pattern matching. So going from 5% API coverage to 95% is... cake.
There is probably some corners that are kind of nasty still, but I've been re-reviewing every line of code manually and there is nothing major. Definitely some areas that can just use a nicer Zig interfaces over the C API, but that's about it.
I plan on writing a longer form blog showcasing my threads, but you can at least see the final AGENTS.md I produced in the linked repo.