keyword

isbn

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

$ curl "https://api.seodata.dev/v1/keyword?q=isbn&country=us" +--------------+------------------+ | volume | 18,100 | | cpc | $2.57 | | competition | 0.11 | | country | US | | updated | 2026-06-13 | +--------------+------------------+

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
isbn-10	49,500	$2.67	17/20
isbn international standard book number	18,100	$2.54	20/20
what is isbn	6,600	$1.45	18/20
isbn meaning	4,400	$1.53	20/20
isbn number	4,400	$2.88	20/20
buy isbn	2,900	$3.02	20/20
isbn purchase	2,900	$3.41	20/20
isbn buy	2,900	$3.41	18/20
isbn of a book	1,300	$2.32	17/20
book by isbn	1,000	$2.75	19/20

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=isbn&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