seodata.dev

keyword

robert langdon books

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

$ curl "https://app.seodata.dev/v1/keyword?q=robert+langdon+books&country=us" +--------------+------------------+ | volume | 3,600 | | cpc | $0.31 | | competition | 0.11 | | country | US | | updated | 2026-06-18 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
dan brown books in order 8,100 $0.22 19/20
dan brown order of books 6,600 $0.15 17/20
langdon series 3,600 $0.31 20/20
robert langdon series 3,600 $0.31 20/20
dan brown langdon series 2,400 $0.08 20/20
dan brown robert langdon 2,400 $0.13 20/20
robert langdon book series 2,400 $0.13 20/20
robert langdon books in order 1,600 $0.79 20/20
robert langdon book series books 720 $0.29 17/20
langdon books 40 $0.13 17/20

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+books&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