keyword

10 most popular books

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

$ curl "https://app.seodata.dev/v1/keyword?q=10+most+popular+books&country=us" +--------------+------------------+ | volume | 40 | | cpc | $0.41 | | competition | 0.69 | | country | US | | updated | 2026-05-25 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
best-selling books	27,100	$0.62	13/20
all time best selling books	12,100	$0.78	15/20
best selling books of all times	12,100	$0.78	15/20
best selling books of all time	12,100	$0.46	14/20
most sold book of all time	12,100	$0.78	14/20
books most popular	2,900	$0.51	14/20
list of best seller books	2,400	$0.4	14/20
top 10 best selling books of all time	1,600	$0.57	14/20
what are the top selling books of all time	1,300	$0.23	14/20
most sold books all time	30	$0	16/20

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=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