How does Kindle highlight sync work?

Install the Fasrad Scanner browser extension, sign in to read.amazon.com once in any tab, click Sync in the extension popup. The extension reads your highlights from Amazon's own notebook page (no public API, no third-party auth), creates one note per highlight, and arms a daily auto-sync. Re-syncs skip books with no new highlights.

Do I need a Readwise subscription or any Amazon developer keys?

No. The Scanner uses your own logged-in Amazon session to read the public notebook page. Nothing to subscribe to, nothing to authorize, no API keys to keep alive.

Can I search highlights by author?

Yes — your assistant can query by book author as a structured field, not just a fuzzy match on the highlight text. "What did Stuart Russell say about the off-switch problem?" returns highlights from his books, not a vector guess.

What about my existing Readwise library?

Re-syncing Kindle from the source recovers the same highlights Readwise was scraping — every flagged passage is still on Amazon's notebook page. Non-Kindle sources (Snipd podcasts, Matter, web-clipper articles) aren't auto-imported yet; paste or forward them as notes for now.

Does Fasrad do spaced repetition / daily review?

Yes, but woven in differently. Your daily briefing can include N random highlights from notebooks you pick ("5 random from Kindle Highlights and Quotes"), shown beside news, calendar, and weather — not a separate review queue. The Readwise resurfacing idea, bolted onto your actual morning.

Will my Notion / Obsidian sync still work?

Fasrad isn't a write-back sync layer. It's the system of record. Most users move highlights here and drop the Readwise → Notion sync entirely. You can export any note or notebook to markdown anytime.

What if Amazon changes its notebook page?

Sync is monitored end-to-end and updates ship through the normal extension update channel. Firefox auto-updates within hours; Chrome goes through Web Store review. You don't have to do anything.

A Readwise alternative where your Kindle highlights are working memory

Readwise emails you yesterday's highlights and hopes you remember them. Fasrad pulls the same library from Amazon and your assistant *uses* it — quoting passages in answers, weaving them into morning briefings, drafting from your own marginalia. The shelf isn't quieter. It's more useful.

Every passage you've ever flagged, in the conversation where it matters

You highlight a book because you want that idea later. Readwise stores it and sends it back at 7am with a few others — a daily catechism of your own thinking. It's lovely. It's also one-way: the highlights wait passively for you to come back. Fasrad makes them active. Your Kindle library syncs nightly, every passage you've flagged becomes a note in your second brain, and your assistant draws from them when you ask a real question — citing the book and the author, not just dropping a quote into your inbox.

Here's what changes:

Ask, don't review. "What did Vaclav Smil say about energy density?" — answers come back from your own marginalia, with the book and location attached. Author and date filters are structured, not vector hand-waving.
Highlights weave into briefings. Your morning brief can pull random passages from any notebook you choose — a paragraph from Juvenescence, a Nietzsche quote, a Soviet joke — sprinkled into the day's news and calendar without you opening a separate app.
Drafts cite your reading. Ask your assistant for a memo or an email, and the relevant highlights surface inline — what you actually annotated, not a generic web result.
Auto-sync, no daily ritual. The Fasrad Scanner extension pulls new Kindle highlights once a day from read.amazon.com — no API key, no Whispersync setup, no Readwise subscription. Skips books that haven't changed.

Switching from Readwise is one Scanner install and a click. Highlights land in a Kindle Highlights notebook with one sub-notebook per book; each note carries the book title, author, ASIN, and Kindle location. Re-syncs are diff-based — nothing duplicates.

Readwise treats highlights as content you re-consume. Fasrad treats them as evidence your assistant can reach for. The annotations stay yours; the work of finding the right one no longer falls on you.