seodata.dev

keyword

4 protocol

Monthly search volume and cost-per-click data for "4 protocol" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=4+protocol&country=us" +--------------+------------------+ | volume | 1,900 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-05-27 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
fourth protocol 2,400 $0 6/20
film the fourth protocol 2,400 $0 3/20
the fourth protocol 1,900 $0 6/20
the fourth protocol movie 1,900 $0 6/20
the 4th protocol 1,900 $0 3/20
the fourth protocol 1987 1,900 $0 3/20
fourth protocol book 320 $0.3 3/20
the fourth protocol cast 210 $0 3/20
4 as protocol 170 $0 4/20
protocol 4 70 $0 5/20

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=4+protocol&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