seodata.dev

keyword

the worlds hardest riddle

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

$ curl "https://app.seodata.dev/v1/keyword?q=the+worlds+hardest+riddle&country=us" +--------------+------------------+ | volume | 12,100 | | cpc | $0.11 | | competition | 0.03 | | 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 17/20
hardest riddles 49,500 $0.05 11/20
impossible riddle with answer 14,800 $0.06 11/20
hardest riddle in the world answer 1,900 $0.14 18/20
the world's hardest riddle answer 1,900 $0.14 13/20
worlds hardest riddle answer 1,900 $0.14 13/20
the world's hardest riddle 320 $0.03 17/20
very difficult riddles 210 $0.05 12/20
the hardest riddle in the world with answer 70 $0.04 16/20
what is the answer to the hardest riddle 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=the+worlds+hardest+riddle&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