KDPTop
Amazon KDP category research tool that shows indie authors whether a niche is worth entering before they write a word.
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KDPTop is the right pick for indie authors who want hard data on whether a Kindle category is worth entering, with decision cards that surface price bands, review barriers, and breakout velocity in one view. It does one thing and does it well, but it is narrow by design: it covers Amazon KDP category research and nothing else, so authors who also need keyword research, listing copy, or ad management will hit its ceiling fast. Writers who need a broader publishing toolkit should look elsewhere.
What is KDPTop?
KDPTop is a web-based research tool for self-publishers on Amazon Kindle Direct Publishing. It tracks Amazon Best Sellers lists daily and presents the data as category decision cards, each showing the price band, review barrier, and breakout speed for a given KDP leaf category, so authors can judge whether a niche is worth entering before writing.
The tool includes a Chrome extension that surfaces sales estimates and niche stats on Amazon book pages, search results, and the KDP publishing interface. Plans range from a permanent free tier (one decision card per day) through Creator, Pro, and Team tiers that add historical data going back up to 730 days, bulk CSV exports, breakout alerts, and a REST API with MCP support for connecting category data to AI assistants like ChatGPT or Claude.
How we scored KDPTop
Capability scores 19 because KDPTop does its specific job, category decision cards with historical rank data and breakout tracking, better than any general writing tool in this directory, but its scope is deliberately narrow and it lacks keyword research, listing copy, or ad tools that competing KDP research products outside this directory include. Ease of use scores 20 because the decision card format is self-explanatory, the free plan requires no credit card, and the Chrome extension works on all plans with no setup friction. Value scores 18 because the Free plan is genuinely useful for occasional research and the Creator plan at $19.99/month is reasonable for active indie authors, but the AI analysis daily caps (20 on Creator, 50 on Pro) are tight enough to frustrate systematic users who pay for a mid-tier plan. Delivery scores 13 because no user reviews or third-party sentiment data were findable to confirm the tool delivers on its claims, and the absence of any confirmed social presence or community footprint makes it harder to assess real-world reliability; this is not a documented trust failure, but the lack of verifiable user signal warrants caution.
Pros and cons
What we liked
- Decision cards consolidate price band, review barrier, and breakout velocity into one view, answering the niche go/no-go question without manual spreadsheet work.
- Free plan is genuinely usable: one full decision card per day with no credit card required, and the Chrome extension works on Free accounts.
- Pro and Team plans include a REST API and MCP integration with up to 10,000 or 50,000 calls per day, letting authors pipe live category data directly into ChatGPT or Claude workflows.
Where it falls short
- Scope is strictly Amazon KDP category research: no keyword research, no listing copy generation, no ad tools, and no support for non-Amazon platforms, so it cannot replace a broader publishing research stack.
- The free tier's single daily decision card and three-day history window are too thin for any serious pre-launch research sprint; meaningful use requires the $19.99/month Creator plan at minimum.
- AI analysis calls are tightly rationed even on paid plans: 20 per day on Creator and 50 per day on Pro, which can become a bottleneck for authors running systematic category sweeps across many niches.
Key features
KDPTop pricing
Free plan at $0 forever (1 decision card per day, 3 days of history). Creator at $19.99/month (first month $9.99), Pro at $39/month (first month $19.50), Team at $99/month (first month $49.50). Yearly billing saves 17%. No credit card required for Free.
| Plan | Price | Who it is for |
|---|---|---|
| Free | $0 | 1 full decision card per day, first 10 rows of lists and tables, 3 days of list history, Chrome extension, 3 AI analyses per day, 3 category lookups per day, 100 API/MCP calls per day, 10 followed categories. No CSV export. No credit card required. |
| Creator | $19.99/mo | Unlimited decision cards, full Top 100, 90 days of history, 2,000-row CSV exports, breakout alerts for followed categories (up to 100), 20 AI analyses per day, 30 category lookups per day, 1,500 API/MCP calls per day. First month $9.99. |
| Pro | $39/mo | 365 days of history for seasonality and long-term trends, 20,000-row CSV exports, 500 followed categories, 50 AI analyses per day, 200 category lookups per day, 10,000 API/MCP calls per day. First month $19.50. |
| Team | $99/mo | 5 seats with shared follows and breakout alerts, 730 days of history, 100,000-row CSV exports, 2,000 followed categories, 300 AI analyses per day, unlimited category lookups, 50,000 API/MCP calls per day. First month $49.50. |
Pricing reflects what we saw at time of review (2026-11). Always confirm current pricing on the tool's own site.
Who should use KDPTop?
KDPTop fits indie authors who publish on Amazon KDP and want to vet a category with real data before committing to a manuscript. A solo author juggling three pen names across romance subgenres, for example, gets genuine value from the Creator plan: unlimited decision cards, 90 days of rank history, and alerts when a new book breaks into a followed category. The Pro plan makes sense for prolific publishers or small presses that need a full year of seasonality data and bulk exports across dozens of niches, or for technically inclined authors who want to feed category data into an AI workflow via the MCP integration.
Authors who need keyword research, listing title generation, ad campaign tools, or any kind of writing assistance alongside niche research will find KDPTop too narrow. For broader Amazon publishing support, a tool like Publisher Rocket (not currently in this directory) covers keyword and category research together. Within this directory, none of the listed competitors directly overlap with KDP niche research, but authors who primarily need help with the writing itself rather than pre-writing market validation should look at Grammarly for drafting and editing support instead.
Skip it if: Authors needing keyword research, listing copy, or ad tools alongside niche data
KDPTop alternatives
Frequently asked questions
How much does KDPTop cost per month?+
Plans are Free ($0), Creator ($19.99/month, first month $9.99), Pro ($39/month, first month $19.50), and Team ($99/month, first month $49.50). Yearly billing saves 17% across paid plans.
Does the free plan require a credit card?+
No. The Free plan is $0 forever and requires no credit card to sign up.
What is a decision card?+
A decision card is KDPTop's summary view for a single KDP leaf category. It shows the price band books sell at in that category, the review count a new title needs to break in, and how fast recent books achieved breakout status.
Does KDPTop work outside Amazon KDP?+
No. KDPTop tracks Amazon Best Sellers lists and is built entirely around Amazon KDP category research. It does not cover other publishing platforms.
Can I use KDPTop data in AI tools like ChatGPT or Claude?+
Yes, on paid plans. Creator gets 1,500 API/MCP calls per day, Pro gets 10,000, and Team gets 50,000. The MCP integration lets you pull live category data directly into compatible AI assistants.
Can I cancel without losing access immediately?+
Yes. Canceling from the Billing page stops future charges, but you keep your paid plan until the end of the period you already paid for, then drop back to Free automatically.
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