Market Sizing

This walks you through TAM, SAM, and SOM estimation using both top-down (industry size narrowed down) and bottom-up (unit economics built up) approaches. It pulls from web search to find current market data and analyst reports, then cross-validates the two methods and surfaces the key assumptions behind each number. Use it when you're prepping for investor pitches, evaluating whether to enter a market, or need defensible numbers for a business case. The output includes growth projections and explicitly flags confidence levels, which is honest. It won't magically give you perfect numbers, but it forces you to show your work and identify what you'd need to validate.

Install to Claude Code

npx -y skills add phuryn/pm-skills --skill market-sizing --agent claude-code