Effective November 14, 2026 · KDP Shelf is a Chrome extension by Huxley Builds · Contact: Huxley Constantinople, huxleybuilds@gmail.com
KDP Shelf keeps your listing profiles and bookshelf snapshots in your own browser. We don't run a server for your data, we don't use analytics or ads, and we never sell or share your information. KDP Shelf only reads or changes a Kindle Direct Publishing page when you click one of its buttons.
| Data | Where it lives | Why |
|---|---|---|
| Listing profiles you create or import (titles, subtitles, author names, descriptions, keywords, categories, prices, print settings, notes) | Your browser's extension storage (chrome.storage.local) on your device | So you can fill KDP's paperback setup forms from them |
| Bookshelf snapshot (title, subtitle, author, format, status, ASIN/ISBN, price, series, last-updated date shown on your KDP Bookshelf) | Your browser's extension storage on your device | Only captured when you click "Add this page to snapshot", so you can download it as a CSV |
| Optional selector overrides you paste in Settings | Your browser's extension storage | To keep the form filler working if KDP changes its pages |
| Subscription status (if you start a trial or buy Pro) | ExtensionPay (see below) and your browser's synced extension storage | To unlock Pro features |
You can export or delete all of it at any time (Settings → Export, the Delete buttons, or removing the extension, which clears its storage).
KDP Shelf asks for access to https://kdp.amazon.com/* only. On those pages it shows a small panel. It reads form fields and bookshelf rows, or types your saved profile into the form, only after you click "Fill this page", "Field check" or "Add this page to snapshot". It never clicks Save, Publish or any other submit button, never runs in the background, and never sends KDP page content anywhere. It doesn't read your Amazon password or sign-in, your bank or tax details, or your royalty payments.
Pro subscriptions are handled by ExtensionPay, which uses Stripe for card payments. If you start a trial or subscribe, ExtensionPay collects your email address, and Stripe collects your payment details. KDP Shelf itself never sees your card. The extension stores a random ExtensionPay key in your browser so it can check whether your subscription is active. If you never start a trial or subscribe, KDP Shelf makes no payment-related requests with your information.
KDP Shelf's use of information complies with the Chrome Web Store User Data Policy, including the Limited Use requirements.
KDP Shelf is a tool for book publishers and is not directed at children under 13.
If this policy changes, we'll update the date above. If a change affects how your data is handled, we'll explain it in the extension's release notes first.
Questions or deletion requests: Huxley Constantinople, Huxley Builds, huxleybuilds@gmail.com.
KDP Shelf is an independent tool and isn't affiliated with, endorsed by, or sponsored by Amazon. Amazon, Kindle and KDP are trademarks of Amazon.com, Inc. or its affiliates.