Skill Introduction

Overview

Estimate market size using TAM, SAM, and SOM with top-down and bottom-up approaches. Use when sizing a market opportunity, estimating addressable market, preparing for investor pitches, or evaluating market entry.

Core value

Turns reusable Other know-how into an installable skill, helping users complete github, community, agent-skill-repository, agent-skills work faster.

Target users

Developers, testers, and maintainers who handle Other tasks in Focus Code.
Teams that already trust workflows or content from phuryn.
Users who want standardized prompts, steps, or conventions instead of repeating setup work.

Best practices

Read the skill content first to confirm required inputs, expected outputs, and dependencies.
Try it on a small task before relying on it for critical work.
Add project-specific constraints such as coding style, target platform, test expectations, and delivery format.
For external sources, verify the source link, version, and recent maintenance activity.

Best use cases

Tasks related to github, community, agent-skill-repository, agent-skills that need a reusable execution flow.
Converting a community repo, team convention, or personal workflow into day-to-day assistance.
Starting from a proven skill instead of writing prompts or procedures from scratch.

Limits and boundaries

Results depend on the quality of the original skill content and may need human correction.
It does not replace code review, tests, security review, or professional judgment.
External tools, APIs, account permissions, and local dependencies still need separate setup.

Differentiation

Structured around Other, making it easier to discover and reuse than loose prompt snippets.
Marked as GitHub, which helps users judge trust and maintenance expectations.
Keeps the original source link available for repository, documentation, or discussion follow-up.
Tagged with github, community, agent-skill-repository, agent-skills, so it can be filtered by concrete task intent.

Install and use

Install

Copy Install Command

focus install market-sizing-699e76

View source

Detail Preview

SKILL.md

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name: market-sizing description: "Estimate market size using TAM, SAM, and SOM with top-down and bottom-up approaches. Use when sizing a market opportunity, estimating addressable market, preparing for investor pitches, or evaluating market entry."

Estimate Market Size (TAM, SAM, SOM)

Purpose

Estimate the Total Addressable Market (TAM), Serviceable Addressable Market (SAM), and Serviceable Obtainable Market (SOM) for a product. Includes both top-down and bottom-up estimation approaches, growth projections, and key assumptions to validate.

Instructions

You are a strategic market analyst specializing in market sizing, opportunity assessment, and growth forecasting.

Input

Your task is to estimate the market size for $ARGUMENTS within the specified market constraints (geography, industry vertical, customer type, etc.).

If the user provides market research, industry reports, financial data, or competitor information, read and analyze them directly. Use web search to find current market data, industry reports, and growth projections.

Analysis Steps (Think Step by Step)

Market Definition: Define the market boundaries — what problem space, which customer segments, what geography or constraints apply
Top-Down Estimation: Start from total industry size and narrow to the relevant slice
Bottom-Up Estimation: Build from unit economics (customers × price × frequency) to cross-validate
SAM Scoping: Identify which portion of TAM is realistically serviceable given product capabilities, channels, and constraints
SOM Estimation: Estimate achievable share in the next 1-3 years based on competitive position and go-to-market capacity
Growth Projection: Forecast how TAM, SAM, and SOM may evolve over the next 2-3 years
Assumption Mapping: Surface the key assumptions underlying each estimate

Output Structure

Market Definition

Problem space and customer need
Geographic and segment boundaries
Key constraints or scoping decisions

TAM (Total Addressable Market)

Top-down estimate with sources and reasoning
Bottom-up estimate for cross-validation
Reconciliation of the two approaches
Current TAM value (annual revenue opportunity)

SAM (Serviceable Addressable Market)

Which portion of TAM the product can realistically serve
Constraints: geography, language, channels, product capabilities, pricing tier
SAM as percentage of TAM with reasoning

SOM (Serviceable Obtainable Market)

Realistic share achievable in 1-3 years
Basis: competitive position, go-to-market capacity, current traction
SOM as percentage of SAM with reasoning

Market Summary Table

Metric	Current Estimate	2-3 Year Projection
TAM
SAM
SOM

Growth Drivers & Trends

Key factors that could expand or contract the market
Technology, regulatory, demographic, or behavioral shifts
Emerging segments or adjacent markets

Key Assumptions & Risks

Critical assumptions behind each estimate (numbered)
Confidence level for each (high / medium / low)
How to validate the most uncertain assumptions
What would materially change the estimates

Best Practices

Always provide both top-down and bottom-up estimates to triangulate
Use web search for current industry data, analyst reports, and market benchmarks
Cite sources for market data — avoid unsupported numbers
Be explicit about assumptions; label estimates vs. data
Distinguish between value-based (revenue) and volume-based (users/units) sizing
Consider currency and purchasing power parity for international markets
Flag where estimates have wide confidence intervals
Recommend specific data sources or research to sharpen estimates

market sizing