keyword

oldest books in the world

Monthly search volume and cost-per-click data for "oldest books in the world" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=oldest+books+in+the+world&country=us" +--------------+------------------+ | volume | 3,600 | | cpc | $0.27 | | competition | 0 | | country | US | | updated | 2026-06-22 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
oldest book in the world	3,600	$0.21	20/20
the oldest books in the world	3,600	$0.27	15/20
world's oldest books	3,600	$0.21	14/20
what is the oldest book in the world	1,300	$0	20/20
oldest book	1,000	$2.55	17/20
oldest books ever written	210	$0	14/20
the oldest books	140	$0	15/20
oldest written book in the world	140	$0	14/20
oldest book known to man	70	$0	14/20
what is the oldest book ever	50	$0	14/20

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://api.seodata.dev/v1/keyword?q=oldest+books+in+the+world&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