keyword

4 eye

Monthly search volume and cost-per-click data for "4 eye" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=4+eye&country=us" +--------------+------------------+ | volume | 2,400 | | cpc | $5.3 | | competition | 0.2 | | country | US | | updated | 2026-06-14 | +--------------+------------------+

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	11/20
four eye	5,400	$3.4	7/20
four-eyes	5,400	$1.98	7/20
four-eye principle	210	$0	7/20
4 eyes principle	140	$0	7/20
what does 4 eyes mean	140	$0	7/20
4 eye principle	90	$0	7/20
4 eye check	70	$0	8/20
4 eyes check	70	$0	8/20
4 eye review	40	$0	8/20

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=4+eye&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