How do I validate my market sizing results?

The skill provides triangulation techniques, such as comparing Top-Down and Bottom-Up results to ensure they are within a 30% margin and sense-checking assumptions against public competitor revenue.

Can I use this skill for disruptive new categories?

Yes, the skill includes the 'Value Theory' methodology, which is specifically designed to estimate market size based on the economic value created for customers when traditional category data doesn't exist.

Which market sizing methodology is best for startups?

Bottom-up analysis is generally the most credible for startups as it builds projections from specific customer segments and unit economics rather than broad industry reports.

What is the difference between TAM, SAM, and SOM?

TAM (Total Addressable Market) is the 100% market opportunity, SAM (Serviceable Available Market) is the portion you can target with your current product and geography, and SOM (Serviceable Obtainable Market) is the realistic share you can capture in 3-5 years.

Market Sizing Analysis

Name: Market Sizing Analysis
Author: boisenoise

byboisenoise

•

Data Science & ML

Conducts comprehensive market sizing using TAM, SAM, and SOM frameworks to evaluate startup opportunities and business potential.

This skill equips Claude with rigorous methodologies for performing market sizing analysis, essential for startup fundraising, strategic planning, and product validation. It guides users through three distinct calculation frameworks—Top-Down, Bottom-Up, and Value Theory—ensuring that revenue projections are defensible, data-driven, and cross-validated. Whether you are analyzing a mature SaaS market or a disruptive new category, this skill provides the step-by-step checklists, industry-specific formulas, and validation techniques needed to build credible market opportunity models that withstand investor scrutiny.

Key Features

01Multi-methodology support including Top-Down, Bottom-Up, and Value Theory analysis

02Frameworks for presenting market data effectively to investors and stakeholders

03Three-tier market framework for calculating TAM, SAM, and SOM

043 GitHub stars

05Industry-specific calculation templates for SaaS, marketplaces, and consumer products

06Step-by-step data sourcing and validation checklists to ensure model credibility

Use Cases

01Validating the commercial viability of a new product feature or geographic expansion

02Triangulating market size estimates using multiple methodologies to minimize calculation errors

03Preparing market opportunity slides and financial projections for venture capital fundraising

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add boisenoise/skills-collections antigravity-market-sizing-analysis

For use in Claude.ai and ChatGPT

Download Skill