market-sizing-analysis
Calculate total addressable markets (TAM/SAM/SOM) for business planning and investor pitches using top-down and bottom-up methodologies.
Install
mkdir -p .claude/skills/market-sizing-analysis && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/639" && unzip -o skill.zip -d .claude/skills/market-sizing-analysis && rm skill.zipInstalls to .claude/skills/market-sizing-analysis
Activation
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Calculate TAM/SAM/SOM for market opportunities using top-down, bottom-up, and value theory methodologies. Use this skill when sizing markets, estimating addressable revenue, validating market opportunity for a new venture, or building investor-ready market analysis for a startup pitch or business plan.Key capabilities
- →Apply top-down analysis using industry reports
- →Execute bottom-up calculations based on customer segments
- →Perform value theory estimation for disruptive innovations
- →Define TAM based on total global revenue opportunity
- →Determine SAM by applying geographic or capability constraints
- →Estimate SOM for 3-5 year financial projections
How it works
The skill applies three distinct methodologies to quantify market opportunity based on industry data, customer segments, or value creation. It structures these inputs into the three-tier TAM, SAM, and SOM framework.
Inputs & outputs
When to use market-sizing-analysis
- →Calculate TAM for a new software product
- →Determine SAM for geographic expansion
- →Estimate SOM for 3-year financial projections
- →Validate market opportunity for pitch decks
About this skill
Market Sizing Analysis
Comprehensive market sizing methodologies for calculating Total Addressable Market (TAM), Serviceable Available Market (SAM), and Serviceable Obtainable Market (SOM) for startup opportunities.
Overview
Market sizing provides the foundation for startup strategy, fundraising, and business planning. Calculate market opportunity using three complementary methodologies: top-down (industry reports), bottom-up (customer segment calculations), and value theory (willingness to pay).
Core Concepts
The Three-Tier Market Framework
TAM (Total Addressable Market)
- Total revenue opportunity if achieving 100% market share
- Defines the universe of potential customers
- Used for long-term vision and market validation
- Example: All email marketing software revenue globally
SAM (Serviceable Available Market)
- Portion of TAM targetable with current product/service
- Accounts for geographic, segment, or capability constraints
- Represents realistic addressable opportunity
- Example: AI-powered email marketing for e-commerce in North America
SOM (Serviceable Obtainable Market)
- Realistic market share achievable in 3-5 years
- Accounts for competition, resources, and market dynamics
- Used for financial projections and fundraising
- Example: 2-5% of SAM based on competitive landscape
When to Use Each Methodology
Top-Down Analysis
- Use when established market research exists
- Best for mature, well-defined markets
- Validates market existence and growth
- Starts with industry reports and narrows down
Bottom-Up Analysis
- Use when targeting specific customer segments
- Best for new or niche markets
- Most credible for investors
- Builds from customer data and pricing
Value Theory
- Use when creating new market categories
- Best for disruptive innovations
- Estimates based on value creation
- Calculates willingness to pay for problem solution
Detailed patterns and worked examples
Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.
When not to use it
- →When performing general financial accounting
- →When analyzing historical company performance
Limitations
- →Requires external data sources like industry reports or customer metrics
- →SOM estimates are constrained by a 3-5 year projection window
How it compares
Unlike manual estimation, this skill enforces a structured three-tier framework to ensure consistency between market validation and financial projections.
Compared to similar skills
market-sizing-analysis side by side with the closest alternatives in the catalog.
| Skill | Installs | Updated | Safety | Difficulty |
|---|---|---|---|---|
| market-sizing-analysis (this skill) | 73 | 2mo | No flags | Intermediate |
| exploratory-data-analysis | 15 | 2mo | Review | Intermediate |
| model-compare | 7 | 7mo | Review | Advanced |
| astropy | 6 | 7mo | Review | Advanced |
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