Can AI replace Resurf?
The core mechanic is unglamorous and very buildable: capture the text of pages you spend real time on, embed it, store it locally, then search and resurface it. An agent can get a Chrome extension doing that in a weekend, and because the corpus is your own browsing, there is no data moat to lose. Where the DIY version cracks is everything around the loop: cross-device sync, mobile and Safari, capture quality on SPAs and paywalled or auth-gated pages, and the taste of deciding what deserves to come back. Also the honest failure mode of every personal recall tool, which is that you stop opening it after week three. Buildable, yes; pleasant enough that you keep it, less certain.
Replacing a paid app means you set it up and keep it running: hosting, updates and backups can be on you. What you give up.
02Could AI build it for you?
The core job: A local Chrome extension that captures readable text from pages you dwell on, embeds it on-device, and gives you a semantic search box plus a daily resurface list.
What a working version needs:
- Chrome or any Chromium browser you are willing to load an unpacked extension into
- Node and pnpm for the build
- Disk space for a few hundred MB of page text and vectors
- Optional OpenAI key if you want better embeddings than the on-device model
Personal memory tools are easy to build and hard to keep using; budget your enthusiasm accordingly.
03What you'd give up
- Sync across devices and browsers, so your phone reading never enters the index
- Capture on anything that is not desktop Chrome: Safari, mobile apps, in-app browsers
- Robust extraction on SPAs, infinite scrolls, PDFs, and anything behind a login wall
- Curation judgment: your version will resurface plenty of pricing pages and airline confirmations
- Someone else maintaining it against Chrome manifest changes that break extensions on a schedule
Because the value only shows up after months of quiet, correct capture, and a homegrown extension that silently stops recording on a Chrome update fails invisibly. Paying for it means the capture layer is somebody's job, the mobile gap is at least on a roadmap, and the ranking has been tuned against more browsing than yours. Personal recall tools are also the classic case where the build is fun and the upkeep is not.
04The build prompt
The complete build prompt, plus 11 step-by-step prompts from research to launch, a design system file, a page-by-page spec, the data model and a launch checklist.
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