Find your next
bestselling ebook
before anyone else
Vektor autonomously sweeps Amazon Kindle and Google for real buyer intent — then delivers competitor BSR data, niche revenue economics, keyword validation, KDP category fit, Amazon Ads packs, and a complete publishing brief. No seed keywords. No guesswork.
From zero to publishable brief
in under 60 seconds
Five automated stages — discovery, validation, scoring, market intel, and LLM synthesis. No manual research. No typing seed keywords.
Kindle Sweep
Amazon autocomplete across your niche letter-space — capturing real buyer searches with zero seed input.
Google Validation
Every signal cross-checked on Google Suggest. Only dual-platform confirmed topics advance.
Opportunity Scoring
Demand × intent × competition. Top signals unlock premium SerpApi PAA for deeper buyer questions.
Market Intel
Competitor BSR, sweet-spot verdict, niche revenue band (P1), keyword validation (P2), category fit (P3) — Rainforest + SerpApi on Solo/Pro.
Publishing Brief
Pain points, outline, 3 titles, Amazon Ads pack (7 backend + PPC + ASINs), and a ready-to-paste manuscript prompt.
Vektor vs. the existing
KDP research stack
Benchmarked against Publisher Rocket, KDSpy, and Book Bolt — the tools KDP publishers actually use. Scores reflect discovery depth, intel breadth, and time-to-publishable output.
| Capability | ⚡ Vektor | Publisher Rocket | KDSpy | Book Bolt |
|---|---|---|---|---|
| Zero-seed autonomous discovery | ✓ Unique | ✗ Seed required | ✗ Browse-first | ✗ Seed required |
| Live competitor BSR table | ✓ Premium | ✓ Best-in-class | ✓ Real-time | ~ Partial |
| Market-entry sweet-spot verdict | ✓ Scored | ✗ | ✗ | ✗ |
| Niche revenue band (page-1 economics) | ✓ P1 | ~ Per-keyword est. | ~ Page revenue | ✗ |
| Keyword validation (traffic lights) | ✓ P2 | ✓ + volume | ~ Basic | ~ Basic |
| KDP category fit (primary/secondary) | ✓ P3 | ✓ 16k+ browser | ~ Basic | ✓ LCB focus |
| Amazon Ads pack (backend + PPC + ASINs) | ✓ Export-ready | ~ AMS seeds only | ✗ | ✗ |
| LLM pain-point synthesis | ✓ Ranked brief | ✗ | ✗ | ✗ |
| Outline + titles + manuscript prompt | ✓ One step | ✗ | ✗ | ✗ |
| Fiction & children's analyst modes | ✓ Dedicated | ~ General | ~ General | ~ Low-content focus |
| BSR history & trend curves | P4 roadmap | ~ Static | ✓ Real-time | ✗ |
| Scheduled autonomous sweeps | ✓ 2× daily | ✗ | ✗ | ✗ |
| Feedback learning loop | ✓ | ✗ | ✗ | ✗ |
| Pricing | Free · $19 · $39/mo | $97–199 once | ~$47–69 once | $10–20/mo |
| Overall score* | 93 | 78 | 71 | 65 |
*Weighted: discovery autonomy (30%), validation depth (25%), brief quality (25%), workflow speed (20%). Vektor P1–P3 closes the Rocket validation gap; Rocket still leads on search volume numbers and category node browsing.
Zero-seed discovery
Publisher Rocket, KDSpy, and Book Bolt all start from a keyword or Amazon page you already found. Vektor sweeps the full niche space autonomously — surfacing opportunities you would never have thought to search.
Discover → validate → brief in one sweep
Competitors give keyword spreadsheets. Vektor delivers P1 niche revenue economics, P2 keyword traffic lights, P3 category fit, a BSR table, sweet-spot verdict, ads pack, pain points, outline, titles, and a manuscript prompt — in one pass.
Gets smarter with use
Thumbs up reinforces signal patterns. Thumbs down blocks noise permanently. Per-user diversity spreads concurrent users across 12 sub-niche angles. No other KDP tool combines a feedback loop with autonomous discovery.
Premium Amazon data on paid plans
Live BSR via Rainforest API is Solo/Pro only. Free tier uses Google Books catalog fallback — useful, but not the same as page-1 Amazon Kindle rankings.
Category browser vs category fit
P3 recommends primary/secondary KDP paths with fit scores. Publisher Rocket still wins for browsing 16,000+ category nodes and exact search-volume numbers.
Coming in P4–P5
BSR history curves (Keepa-style) and an Amazon Lens overlay while browsing are on the roadmap. Use KDSpy today for live on-page competitor spying between sweeps.
“Use Vektor to discover what to write, validate revenue and keywords (P1–P3), and export your ads pack. Use Publisher Rocket for deep category browsing and search volume. Use KDSpy while on Amazon to spy live competitors. Three tools, one workflow.”
— RECOMMENDED WORKFLOW FOR SERIOUS KDP PUBLISHERS
Start free.
Scale when you're ready.
No credit card required to start. Upgrade when the free tier isn't enough.
- 3 sweeps per month
- 11 niche modes (9 auto + fiction + children's)
- Full LLM publishing brief
- Heuristic keyword validation (P2)
- Heuristic category fit (P3)
- Google Books competitor fallback
- Live Amazon BSR + revenue band (P1)
- Amazon Ads keyword pack
- Live catalog counts (SerpApi)
- 40 sweeps per month
- Everything in Free
- Live competitor BSR table (Rainforest)
- Niche revenue band — units & royalty range (P1)
- Keyword validation with live catalog counts (P2)
- Category fit + Rainforest refinements (P3)
- Market-entry sweet-spot verdict
- Amazon Ads pack — 7 backend + PPC + ASINs
- Sweep history + feedback learning
- Unlimited sweeps
- Everything in Solo
- Priority LLM inference
- Real-time SSE pipeline streaming
- Full sweep history
- Early feature access
Your API key in 10 seconds
Enter your email. Copy your key. Paste it into the Chrome extension. Done.
Chrome extension (.zip) — load it unpacked in chrome://extensions