market-sizing

Estimate market size using TAM, SAM, and SOM methodologies.

Updated Feb 6, 2026

Search Tags:#business strategy #market analysis #market sizing #sam #som #tam

Ready to run

npx skills add https://github.com/spandios/vibe-utils --skill market-sizing-spandios

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: market-sizing
Source: https://github.com/spandios/vibe-utils/tree/main/skills/market-sizing
Command: npx skills add https://github.com/spandios/vibe-utils --skill market-sizing-spandios

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps businesses and strategists accurately estimate the Total Addressable Market (TAM), Serviceable Addressable Market (SAM), and Serviceable Obtainable Market (SOM) for products or services.

Core Features & Use Cases

Comprehensive Market Sizing: Utilizes both top-down and bottom-up approaches for robust estimations.
Growth Forecasting: Projects market evolution over 2-3 years.
Assumption & Risk Analysis: Clearly outlines underlying assumptions and potential risks.
Use Case: A startup founder can use this Skill to prepare a compelling investor pitch by presenting a well-researched and defensible market size analysis.

Quick Start

Estimate the market size for a new AI-powered productivity tool targeting small businesses in North America.

Frequently Asked Questions about market-sizing

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

FAQPage Schema

How do I estimate market size using TAM, SAM, and SOM methodologies?▼

Market size estimation defines market boundaries and calculates TAM, SAM, and SOM using both top-down and bottom-up approaches. This process projects market growth over 2-3 years while clearly outlining underlying assumptions and potential risks.

What is the difference between top-down and bottom-up market sizing approaches?▼

Top-down market sizing estimates the total market and narrows down to your share, while bottom-up builds estimates from individual unit sales and pricing. This Skill applies both approaches to produce robust, defensible market opportunity assessments.

How do I calculate TAM, SAM, and SOM for an investor pitch?▼

To calculate TAM, SAM, and SOM for an investor pitch, define your market boundaries and apply top-down and bottom-up estimations. This Skill generates defensible market size projections with clear assumptions to support your investment case.

Can I project market growth and forecast market evolution for a new product entry?▼

Market growth forecasting projects market evolution over 2-3 years for new product entries. This Skill performs market opportunity assessments by modeling future growth trajectories based on clearly defined assumptions and risk factors.

What data do I need to define market boundaries for a market opportunity assessment?▼

Defining market boundaries for a market opportunity assessment requires specifying your target audience, geography, and product scope. Once defined, this Skill applies TAM, SAM, and SOM methodologies to estimate your addressable and obtainable market.

When should I use market sizing for market entry evaluations instead of general analysis?▼

Market sizing for market entry evaluations is necessary when assessing the viability of entering a new segment or geography. This Skill provides targeted TAM, SAM, and SOM estimations with assumption and risk analysis to support entry decisions.