keyword

decline code 51

Monthly search volume and cost-per-click data for "decline code 51" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=decline+code+51&country=us" +--------------+------------------+ | volume | 590 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-27 | +--------------+------------------+

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
declined code 51	590	$0	15/20
debit code 51	110	$0	15/20
credit card decline code 51	90	$0	17/20
code 51 credit card	90	$0	14/20
decline 51 code	70	$0	17/20
transaction declined 51	70	$0	15/20
declined 51 code	70	$0	14/20
card declined code 51	50	$0	17/20
card decline code 51	50	$0	15/20
code 51 debit card	30	$0	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://api.seodata.dev/v1/keyword?q=decline+code+51&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