Daily Prompt Pack: Ideation and Validation – Test Before You Build

Most founders build first and ask questions later. These three prompts flip the script – using AI to pressure-test demand, map competition, and size your market before you commit months of work.

[Claude]

Given my startup idea [describe your product and target user in 2 sentences], analyze 10 existing alternatives customers currently use to solve this problem. Rank each by switching friction, price sensitivity, and feature gap. Output a table with a “winning angle” column showing exactly how my product beats each incumbent.

[ChatGPT]

I am considering building [specific product] for [specific audience]. Generate 10 unfiltered customer interview questions that expose real pain points, not polite feedback. Format as a downloadable checklist with a scoring rubric for each answer: must-have, nice-to-have, or fake problem.

[Cursor]

Act as a pre-seed investor evaluating [your idea]. Write a 500-word investment memo covering market size (TAM/SAM/SOM), defensibility risk, and a red-team section listing 5 reasons this fails. Output as markdown with a go/no-go recommendation at the top.

Full archive at aicofounderstack.com/tag/prompt-pack.