keyword

online history books free

Monthly search volume and cost-per-click data for "online history books free" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=online+history+books+free&country=us" +--------------+------------------+ | volume | 90 | | cpc | $1.51 | | competition | 0.23 | | country | US | | updated | 2026-06-16 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
free history books	140	$8.32	14/20
history books for free	110	$3.16	18/20
history books free	110	$1.4	17/20
free books on history	110	$1.4	16/20
free history book	110	$3.16	16/20
free books history	110	$3.16	15/20
history free books	110	$3.16	14/20
history books online for free	90	$1.51	19/20
online free history books	90	$1.51	19/20
history books online free	90	$1.51	18/20

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=online+history+books+free&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt