keyword

caltrain

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

$ curl "https://api.seodata.dev/v1/keyword?q=caltrain&country=us" +--------------+------------------+ | volume | 90,500 | | cpc | $0.21 | | competition | 0.05 | | country | US | | updated | 2026-09-02 | +--------------+------------------+

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
caltrain schedule	110,000	$0.31	14/20
caltrain stations	74,000	$0.71	9/20
caltrain san francisco	4,400	$0.43	13/20
san francisco caltrain station	4,400	$0.4	9/20
caltrain website	590	$0.31	9/20
caltrain track	210	$0	9/20
caltrain train	140	$0.39	12/20
caltrain california	90	$0.43	11/20
caltrain trains	90	$0	11/20
caltrain today	70	$0	11/20

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=caltrain&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