Highlights
As we're testing out our new web-based Brainstorm tool, we're constantly building small (and large) test products.
One of those is now live at highlights.primeradiant.com. It's a tiny little tool that helps you take all of your Kindle highlights and notes and extract them into markdown files, perfect for consumption by your agent.
At Prime Radiant, one of the things we're thinking about is how to package and share domain expertise, sort of like I did with my take on the agentic software development lifecycle in Superpowers.
Yesterday, I was chatting with James Cham about the value of notes as a personal lens on a problem domain. James mentioned that he'd just used the notes he'd taken on a book he'd read as part of a prompt to help a founder answer a business question. As a founder who's taken an investment from James, that got my attention. James gives great advice and I'd love to be able to bottle it.
I asked James how many books he had notes like that on and he guessed that it was well over 100. Having previously messed around with Kindle notes, I knew there wasn't a nice easy API for extracting those notes. There are some third-party tools (including paid tools‽) that will give you a dump of your notes, but a quick search didn't turn up anything designed for our new markdown-centric agentic world.
A quick chat with Brainstorm later, we settled on an old web standby - the bookmarklet. It's a chunk of JavaScript you can drag to your bookmarks bar. When you click it while on the Amazon Kindle notes site, it takes control of your browser, fetches all your notes and highlights and then builds you a zip file full of markdown docs to download.
Brainstorm gave me a set of specs that I handed to OpenAI Codex and Codex got to work. It only took a few minutes for it to build all the JavaScript and the landing page. I let Codex take control of a browser to do manual testing. We iterated for half an hour, working through a race condition or two. I asked it to change the shape of the generated files a bit to be easier for an agent to digest. Then we pushed it live.
It's free and open source. You can use it today at https://highlights.primeradiant.com/. The code is up on GitHub at https://github.com/prime-radiant-inc/kindle-highlight-exporter.
Enjoy!