seodata.dev

keyword

robert langdon book series

Monthly search volume and cost-per-click data for "robert langdon book series" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=robert+langdon+book+series&country=us" +--------------+------------------+ | volume | 2,400 | | cpc | $0.08 | | competition | 0.2 | | country | US | | updated | 2026-06-08 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
dan brown order of books 6,600 $0.15 13/20
the da vinci code books 5,400 $0.22 12/20
langdon series 3,600 $0.31 15/20
robert langdon series 3,600 $0.31 15/20
dan brown langdon series 2,400 $0.08 20/20
robert langdon books 2,400 $0.08 20/20
dan brown robert langdon 2,400 $0.13 18/20
langdon serie 2,400 $0.11 16/20
robert langdon books in order 1,600 $0.79 14/20
robert langdon book series in order 480 $0.25 14/20

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://app.seodata.dev/v1/keyword?q=robert+langdon+book+series&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