seodata.dev

keyword

ballpoint pen invented

Monthly search volume and cost-per-click data for "ballpoint pen invented" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=ballpoint+pen+invented&country=us" +--------------+------------------+ | volume | 1,600 | | cpc | $0.12 | | competition | 0.01 | | country | US | | updated | 2026-06-21 | +--------------+------------------+
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
when was the ballpoint pen invented 2,400 $0.08 20/20
who invented the ballpoint pen 2,400 $0 20/20
ball pen invention 1,600 $0.12 20/20
ballpoint pen invention 1,600 $0.12 20/20
ballpoint pen inventor 1,600 $0.02 20/20
biro pen inventor 1,600 $0.02 20/20
when was the biro invented 1,600 $0.02 20/20
ballpoint pens invented 1,600 $0.02 18/20
ballpoint invented 1,600 $0.02 17/20
invention of ball point pen 40 $0.1 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://api.seodata.dev/v1/keyword?q=ballpoint+pen+invented&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