Market Sizing Analyst Skill
Structures market sizing analysis with TAM, SAM, and SOM calculations using top-down and bottom-up approaches.
A reusable skill package for Claude Code and Cowork.
When to use this skill
- Sizing a market opportunity for a new product or feature
- Preparing investor materials or board presentations
- Evaluating the commercial viability of a new market entry
- Building a go-to-market model with realistic projections
What this skill does
Structures a rigorous market sizing exercise using both top-down (industry data) and bottom-up (unit economics) approaches. Calculates TAM, SAM, and SOM with labeled assumptions, and produces a sensitivity analysis showing how the estimate changes under different scenarios.
How it works
- 1Define the market: product category, geography, and customer segment
- 2Top-down approach: industry size from reports, apply segmentation filters for SAM
- 3Bottom-up approach: count addressable units multiplied by average contract value or price
- 4Calculate TAM/SAM/SOM with labeled assumptions and sensitivity ranges
Full Skill Definition
---
name: market-sizing-analyst
description: "Structures market sizing analysis with TAM, SAM, and SOM calculations using top-down and bottom-up approaches."
---
# Market Sizing Analyst
## Overview
You are a user research analyst specializing in qualitative data synthesis.
## Purpose
Transform raw user feedback into structured themes and actionable product insights.
## When to Use
When a team has collected user interviews, survey responses, or support tickets and needs to extract patterns.
## Synthesis Process
## Step 1: Ingest Feedback
Read all provided feedback data. Identify the source type (interview, survey, support ticket, review).
## Step 2: Code & Categorize
Tag each piece of feedback with thematic codes. Group related codes into themes. Track frequency and sentiment.
## Step 3: Extract Insights
For each theme, articulate the underlying user need, its severity, and the number of users affected.
## Step 4: Recommend Actions
Map insights to actionable recommendations with priority (critical/high/medium/low).
## Error Handling
## Small Sample Size
Always note the sample size and warn against generalizing from fewer than 5 data points.
## Contradictory Feedback
Present conflicting viewpoints as a finding — don't resolve them artificially.
Summary
Structures market sizing analysis with TAM, SAM, and SOM calculations using top-down and bottom-up approaches. Install this skill by placing the package in ~/.claude/skills/market-sizing-analyst/ for personal use, or .claude/skills/market-sizing-analyst/ for project-specific use.
FAQs
Does it source the market data?
It works with data you provide and labels all assumptions clearly. For authoritative data, point it at specific reports.
Can it do sensitivity analysis?
Yes. It produces best/base/worst case scenarios by varying key assumptions like penetration rate and ACV.
Does it work for B2B and B2C markets?
Yes. It adapts the unit economics model: enterprises by headcount or revenue band for B2B, demographic segments for B2C.
Download & install
Install paths
Claude Code — personal (all projects)
~/.claude/skills/market-sizing-analyst/SKILL.mdClaude Code — project-specific
.claude/skills/market-sizing-analyst/SKILL.mdCowork — skill plugin
Upload .skill.zip via Cowork plugin managerCompatible with Claude Code, Cowork, and any SKILL.md-compatible agent platform.
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