market-sizing

Produce TAM/SAM/SOM market sizing estimates with top-down and bottom-up research.

1|Updated Feb 16, 2026
One-click install
npx skills add https://github.com/dobachi/claude-skills-marketplace --skill market-sizing-dobachi
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: market-sizing
Source: https://github.com/dobachi/claude-skills-marketplace/tree/main/plugins/market-sizing/skills/market-sizing
Command: npx skills add https://github.com/dobachi/claude-skills-marketplace --skill market-sizing-dobachi

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps you quantify market opportunity (TAM, SAM, and SOM) without vague guesses by producing a structured, evidence-backed market sizing report.

Core Features & Use Cases

  • TAM/SAM/SOM framework: Defines the market universe (TAM), reachable segment (SAM), and realistic capture in 1–3 years (SOM).
  • Top-down and bottom-up estimation: Combines macro/category research with unit-economics-style calculations to triangulate results.
  • Value-theory (demand-side) reasoning: Estimates market value based on current spend and willingness to pay for better solutions.
  • Research-backed reporting: Guides sourcing (market reports, government data, SEC filings, comparable transactions, and customer data) and requires citations, dates, math, and assumptions.
  • Sensitivity analysis: Tests key variables (growth rate, penetration rate, ACV) to produce low/base/high scenarios and quantify uncertainty.

Use case: Estimating the market size for a data governance platform by combining industry-level totals (top-down) with target-customer counts and expected penetration (bottom-up), then validating coherence between SAM and SOM.

Quick Start

Ask the skill to produce a TAM/SAM/SOM report for your specified product, target customers, geography, and time horizon, using both top-down and bottom-up approaches with dated sources and a sensitivity analysis.

Frequently Asked Questions about market-sizing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I estimate TAM, SAM, and SOM for a new product launch?

Estimate TAM, SAM, and SOM by combining top-down market research with bottom-up unit economics, applying triangulation and sensitivity analysis to produce evidence-backed sizing reports. This approach requires cited inputs, reproducible math, and explicit assumptions to validate realistic market capture within 1–3 years.

What is the best way to validate go-to-market reach using market sizing?

Validate go-to-market reach by running consistency checks between estimated SAM and SOM ranges using bottom-up unit economics. This process quantifies your realistic market capture against the reachable segment, testing penetration rates and ACV through low, base, and high sensitivity scenarios.

How does triangulation improve market sizing estimates?

Triangulation improves market sizing estimates by cross-validating top-down category research with bottom-up unit economics calculations. This method blends macro-level totals with target-customer counts and expected penetration, reducing vague guesses and producing reproducible, investor-ready market opportunity narratives.

Can I use sensitivity analysis for TAM SOM calculations with limited data?

Sensitivity analysis tests key variables like growth rate, penetration rate, and ACV to produce low, base, and high scenarios for TAM and SOM calculations. Even with limited data, this approach quantifies uncertainty and requires explicit assumptions, dated sources, and consistency checks between estimated ranges.

When do I need a structured TAM SAM SOM report instead of a rough estimate?

You need a structured TAM SAM SOM report when launching a new product, redefining a segment or geography, validating go-to-market reach, or writing investor-ready sizing narratives. This structured approach replaces vague guesses with reproducible math, cited market data, and explicit risk documentation.

What sources are required for evidence-backed market sizing?

Evidence-backed market sizing requires dated and cited inputs from market reports, government data, SEC filings, comparable transactions, and customer data. These sources support both top-down research and bottom-up unit economics, ensuring reproducible math and explicit assumptions throughout the TAM SAM SOM framework.