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/tam-sam-som-calculator

by Dean Petersdeanpeters/product-manager-skills7.1k stars

851

Calculate TAM, SAM, and SOM with explicit assumptions, methods, and caveats. Use when sizing a market for a product idea, business case, or executive review.

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Updated 2 months ago
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Use this Skill: https://skilld.dev/gh/deanpeters/product-manager-skills/tam-sam-som-calculator

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template.md

903 B raw

≈226 tokens on demand. Your agent reads this file only when SKILL.md points to it.

TAM/SAM/SOM Template

Use this template to calculate market size with citations and assumptions.

Template

# TAM/SAM/SOM Analysis

**Problem Space:** [Description]
**Geographic Region:** [Region]
**Industry/Segments:** [Segments]
**Target Customers:** [Demographics/Firmographics]

## Total Addressable Market (TAM)
- **Definition:** [What market demand represents 100% capture]
- **Population Estimate:** [Source + number]
- **Calculation:** [Show math]
- **Market Size:** $[X]

## Serviceable Available Market (SAM)
- **Definition:** [Subset you can reach]
- **Population Estimate:** [Source + number]
- **Calculation:** [Show math]
- **Market Size:** $[X]

## Serviceable Obtainable Market (SOM)
- **Definition:** [Realistic capture in 1-3 years]
- **Assumption:** [Market share %]
- **Calculation:** [Show math]
- **Market Size:** $[X]

## Sources
- [Citation 1]
- [Citation 2]

Source: SKILL.md on GitHub

Third-party checks

1 warning16d5 checks · Risk SAFE

Gen Agent Trust Hub16d
The skill facilitates market sizing (TAM/SAM/SOM) calculations through interactive interviews or research. It includes a local Python script for deterministic math. A low-risk indirect prompt injection surface exists because the skill processes external marketing materials provided by the user without explicit sanitization or boundary markers.
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Snyk16d
Risk: LOW · No issues
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1/4 files flagged
ZeroLeaks5mo
Score: 93/100 · 2 sections analyzed

Provenance

Signed by skilld at b68bf96. This ties the file your Agent reads to that commit on GitHub. It does not review the instructions.

Last checked against GitHub last month.

Activeupdated 2 months ago

Capability

argument-hint: [product idea] [market constraints]
type: interactive
theme: market-intelligence

Other metadata

intent: Guide product managers through calculating Total Addressable Market (TAM), Serviceable Available Market (SAM), and Serviceable Obtainable Market (SOM) for a product idea by asking adaptive, contextually relevant questions. Use this to build defensible market size estimates backed by real-world citations, economic projections, and population data—essential for pitching to investors, securing budget, or validating product-market fit.
best_for: [ "Sizing a market for a business case an executive will question", "Making your market assumptions explicit and attackable", "Replacing a top-down guess with a defensible bottom-up estimate" ]
scenarios: [ "I need market sizing for a business case our CFO will pick apart", "Our TAM number came from a slide nobody can source — rebuild it properly" ]
estimated_time: 20-40 min

/tam-sam-som-calculator