seodata.dev

keyword

hardest riddle on earth

Monthly search volume and cost-per-click data for "hardest riddle on earth" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=hardest+riddle+on+earth&country=us" +--------------+------------------+ | volume | 6,600 | | cpc | $0.07 | | competition | 0.22 | | country | US | | updated | 2026-06-15 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
the hardest riddle 60,500 $0.11 11/20
hardest riddle 49,500 $0.06 15/20
the world's hardest riddle 9,900 $0.03 12/20
world hardest riddle 6,600 $0.07 20/20
world's hardest riddle 6,600 $0.07 20/20
hardest riddle in the world 6,600 $0.04 15/20
hardest riddle in the world answer 1,900 $0.14 16/20
the hardest riddle in the world with answer 1,900 $0.14 12/20
top 10 hardest riddles in the world with answers 1,300 $0.05 13/20
what is world's hardest riddle 10 $0 13/20

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=hardest+riddle+on+earth&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