nichedata.dev
Pay-per-call niche demand and competition intelligence for Kindle Direct Publishing authors and AI agents. No API keys, no signup — just x402 USDC micropayments on Base.
Pricing
| Query type | Price |
|---|---|
| Cached / pre-seeded keyword | $0.03 USDC |
| Live on-demand research | $0.10 USDC |
Quick start
# 1. Discover what's cached (free)
curl https://nichedata.dev/v1/niches
# 2. Check pricing tier for a keyword (free)
curl https://nichedata.dev/v1/niche/keto-cookbook/check
# 3. Fetch full intelligence (paid via x402)
curl -H "X-Payment: <base64-x402-auth>" \
https://nichedata.dev/v1/niche/keto-cookbookWhat you get
Demand score (0–100), competition score (0–100), Amazon BSR range, monthly revenue estimate, review threshold to rank, and average book pricing — for any KDP keyword. Cached responses freshen every 7 days; live research kicks off on cache miss.