KDPTop - Amazon KDP Book Research: Best Sellers, Keywords, Sales Estimates

# KDPTop > KDPTop (https://kdptop.com) tracks the Amazon.com book market for Kindle Direct Publishing (KDP) research: > the full Amazon Books and Kindle eBooks category tree (English + Simplified Chinese names), daily snapshots of > each category's Best Sellers, New Releases and Top 100 Free (Kindle) lists, ranks 101-10,000 for verified > categories, per-book (ASIN) ranking history and sales estimates, authors (pen names merged by Amazon Author ID) > with full catalogs and release timelines, new books breaking into Best Sellers, keyword search volume, and > per-category decision cards and opportunity metrics. ## For AI assistants - [llms-full.txt](https://kdptop.com/llms-full.txt): regenerated daily - coverage, the categories with the most room for new books, the most active authors and today's decision-card verdicts, each linked to its public page - [Facts JSON](https://kdptop.com/api/public/facts): the same headline numbers as JSON, no key needed, refreshed hourly - License: facts and public pages may be quoted under CC BY 4.0 with attribution "Source: KDPTop (kdptop.com)" - [KDPTop AI](https://kdptop.com/ai): ask questions in plain language and get answers with tables, charts and book cards built from live data; connect ChatGPT, Claude, Cursor or Claude Code to the MCP server ## Pages - [Home](https://kdptop.com/): what KDPTop does, decision cards, recent breakout books, FAQ - [AI assistant and connectors](https://kdptop.com/ai): what the AI can answer, how to connect your own AI app - [Category market pages](https://kdptop.com/kdp/categories/) and [author pages](https://kdptop.com/kdp/authors/): public, updated daily - [Pricing](https://kdptop.com/pricing): Free, Creator, Pro and Team plans, monthly or yearly - [KDP category finder](https://kdptop.com/tools/kdp-category): free tool, which KDP categories fit a book - [Chrome extension](https://kdptop.com/extension): sales estimates and BSR history on Amazon pages - [User guide](https://kdptop.com/help)

{"openapi":"3.1.0","info":{"title":"KDPTop API","description":"\nAmazon KDP market data collected by KDPTop: the Amazon Books and Kindle eBooks category tree\n(English + Simplified Chinese names), daily Best Sellers / New Releases / Top 100 Free snapshots,\nbook (ASIN) ranking history and per-category opportunity metrics.\n\nAuthenticate with `Authorization: Bearer <API key>` (create keys at https://kdptop.com/developer).\nTypical flow: searchCategories -> getCategory / getList -> getBook; findO