seodata.dev

keyword

proof of working

Monthly search volume and cost-per-click data for "proof of working" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=proof+of+working&country=us" +--------------+------------------+ | volume | 1,600 | | cpc | $0.96 | | competition | 0.01 | | country | US | | updated | 2026-06-01 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
verification letter from employer 33,100 $2.29 12/20
employment letter verification 33,100 $2.55 11/20
proof of employment form 8,100 $2.9 10/20
proof of work letter 6,600 $2.17 16/20
employment proof letter 6,600 $2.39 12/20
proof of work letter sample 6,600 $2.17 11/20
employment verification letter example 5,400 $1.89 10/20
proof of employment 1,900 $4.12 15/20
how to show proof of employment 140 $2.61 11/20
evidence of employment 30 $2 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://app.seodata.dev/v1/keyword?q=proof+of+working&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt