keyword

what are the 10 most popular books

Monthly search volume and cost-per-click data for "what are the 10 most popular books" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=what+are+the+10+most+popular+books&country=us" +--------------+------------------+ | volume | 30 | | cpc | $0 | | competition | 1 | | country | US | | updated | 2026-05-16 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
best seller book of all time	590	$0	11/20
best seller novel	590	$0.3	10/20
10 most popular books	40	$0.41	10/20
top selling books for adults	20	$0	11/20
best seller books novels	20	$0.75	10/20
best selling book in america today	20	$0	10/20
best selling novel books	20	$1.27	10/20
bestseller books in english	20	$0	10/20
most sold books all time	20	$0	10/20
top bestselling novels	20	$0.52	10/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=what+are+the+10+most+popular+books&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt