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market-sizing-methods

Automate market sizing and ICP definition with bottom-up TAM estimation.

4|Updated Mar 3, 2026
Search Tags:#go-to-market#segmentation#market-sizing#sam#icp#som#tam
One-click install
npx skills add https://github.com/AI-Foundry-Core/ril-agents --skill market-sizing-methods
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: market-sizing-methods
Source: https://github.com/AI-Foundry-Core/ril-agents/tree/main/plugins/product-discovery/skills/market-sizing-methods
Command: npx skills add https://github.com/AI-Foundry-Core/ril-agents --skill market-sizing-methods

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Market sizing is frequently done wrong — either too optimistically (top-down from industry reports) or too vaguely (hand-waving about "a large and growing market"). This skill covers rigorous methods for estimating opportunity size and defining who to target.

Core Features & Use Cases

  • Bottom-Up TAM estimation: Steps to define unit, universe, revenue per unit, and aggregate TAM.
  • Top-Down vs. Bottom-Up: Guidance on when to use each approach and how to compare results.
  • ICP Definition & Segmentation: Templates to define ideal customers and segment markets by value and growth.
  • Segment Sizing & Prioritization: Scoring framework for size, willingness to pay, accessibility, and strategic fit.

Quick Start

Define your target market, gather unit economics data, and generate a bottom-up TAM estimate for your SaaS product.

Frequently Asked Questions about market-sizing-methods

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

FAQPage Schema
How do I calculate TAM, SAM, and SOM for a new product direction?▼

Calculate TAM, SAM, and SOM by applying bottom-up or top-down methods using explicit unit economics and data sources, delivering auditable, investor-ready market sizing results.

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

Bottom-up estimation aggregates revenue per unit across a defined universe, while top-down sizing derives opportunity from industry reports. Compare both to avoid overly optimistic or vague market sizing.

How do I define an ideal customer profile and segment a market for GTM planning?▼

Define an ideal customer profile and segment markets using templates that score segments by value, growth, willingness to pay, accessibility, and strategic fit to prioritize your go-to-market planning.

Can I use this market sizing approach for investor-ready GTM planning?▼

Yes, this approach automates rigorous market sizing and ICP definition for product teams, generating auditable TAM, SAM, and SOM estimates specifically tailored for investor-ready GTM planning.

When should I use bottom-up TAM estimation instead of top-down approaches?▼

Use bottom-up TAM estimation when defining unit, universe, and revenue per unit for new product directions, and compare it against top-down approaches to ensure rigorous, auditable opportunity sizing.

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