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Add a View on Goodreads button on Amazon book pages - #18
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An Amazon listing already has the ISBN; jumping to the matching Goodreads page should not require leaving the product page to search. Co-authored-by: Cursor <cursoragent@cursor.com>
ion05
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September 7, 2026 05:45
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What this changes
On Amazon.com book product pages, BunnyLol now draws a View on Goodreads button under the title. It reads the labelled ISBN (or JSON-LD
isbn) locally and navigates togoodreads.com/book/isbn/…for that same book. Search pages and listings without an ISBN are left alone.Verified in Chrome for Testing with
dist/loaded unpacked: the button appears on Project Hail Mary and opens the matching Goodreads page.Amazon (button under the title):
After click (Goodreads for the same book):
Which AGENTS.md invariant does this touch?
11 (user text reaches the DOM only via
textContent/createElement). The button label is ours; the ISBN is never written into the page as HTML. The content script uses a shadow root andcreateElement/createElementNS.Also privacy: PRIVACY.md no longer claims there are no content scripts.
Checks
pnpm typecheckpassespnpm testpassespnpm buildpassesdist/unpacked and exercised the change in a real browserthrough the built rules, not just
buildRulesdesign/tokens.css, no literal hex orfont-size: Npxin the UI sheets, and nevercolor: var(--accent)The Amazon button lives in a shadow root on amazon.com, so it cannot
@importtokens.css. Values are copied by hand the same waygo.htmlalready does.Stacked PRs
Base:
master. Not stacked.Made with Cursor