seodata.dev

keyword

1981 series 100 dollar bill security features

Monthly search volume and cost-per-click data for "1981 series 100 dollar bill security features" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=1981+series+100+dollar+bill+security+features&country=us" +--------------+------------------+ | volume | 30 | | cpc | $0 | | competition | 0.01 | | country | US | | updated | 2026-06-07 | +--------------+------------------+
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
old $100 bills 27,100 $0.07 11/20
old $100 dollar bills 27,100 $0.05 11/20
100 dollar bill old 27,100 $0.07 10/20
old 100 dollar bill 22,200 $0.06 11/20
old 100 dollar bills 22,200 $0.06 10/20
100 dollar bill 1996 2,400 $0.03 10/20
series 1996 hundred dollar bill 2,400 $0.07 10/20
fake old 100 dollar bill 1,000 $0 11/20
1981 series $100 dollar bill watermark 40 $0 12/20
does a 1981 hundred dollar bill have a security strip 30 $0 12/20

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=1981+series+100+dollar+bill+security+features&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