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keyword

world's hardest riddle ever

Monthly search volume and cost-per-click data for "world's hardest riddle ever" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=world's+hardest+riddle+ever&country=us" +--------------+------------------+ | volume | 20 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-13 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
the hardest riddle 60,500 $0.11 14/20
hardest riddle in the world answer 1,900 $0.14 15/20
the world's hardest riddle answer 1,900 $0.14 12/20
top 10 hardest riddles in the world with answers 1,300 $0.04 12/20
the world's hardest riddle 320 $0.03 13/20
the hardest riddle in the world with answer 70 $0.04 14/20
what are the hardest riddles ever 50 $0 14/20
the hardest riddle ever known to man 30 $0 13/20
answer to the hardest riddle ever 20 $0 15/20
most complicated riddles ever 20 $0 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=world's+hardest+riddle+ever&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