I’ve built a browser extension that allows you to theme your visited websites just by prompting. It takes your request and uses openai’s codex-mini to generate the JS and CSS needed to apply the change.
It can do all sorts of things: stop autoplaying videos, replace links with archive.is on newspapers, dim sidebars, or add small QOL features like editing the responses in chatgpt so it’s easier to copy/paste.
Earlier today I asked it to add a “cost per 100 requests” column on OpenRouter’s activity page—decimals makes it hard for my ADHD brain to process.
Technically, you can do this with developer tools and user styles but i’ve been impressed with codex’ ability to take my vague requests and turn it into working styles with just 10% of the source page for context.
Building it i’ve alternated between codex and claude (opus) and I suspect that because I’ve decided to go with a very light stack: tailwind, alpinejs and basecoat (shadcn without react) the final code is maintainable and pretty performant.
I haven’t launched on an webstore yet but decided to release a BYOK open source version. Give it a try as I’m sure you’ll be able to replace at least 3 extensions you have with it.
Check the code here: https://github.com/alentodorov/clickremix-byok
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