keyword

fourth eye book

Monthly search volume and cost-per-click data for "fourth eye book" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=fourth+eye+book&country=us" +--------------+------------------+ | volume | 590 | | cpc | $0.24 | | competition | 0.61 | | country | US | | updated | 2026-06-26 | +--------------+------------------+

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
four eyes	5,400	$4.08	4/20
four-eyes	5,400	$1.98	3/20
fourth eye	5,400	$4.86	3/20
4th eye	2,400	$4.25	2/20
4 eyes	1,900	$6.21	3/20
four eyes book	720	$0.2	3/20
four eyes rex ogle	260	$0.18	2/20
four eyes graphic novel	110	$0.3	3/20
four eyes book series	40	$0.44	2/20
four eyes review	40	$0	2/20

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=fourth+eye+book&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