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tam-sizer

Resolve firmographic and technographic filters against ZoomInfo to output a TAM count and filter set.

4|5|Updated Feb 24, 2026
Search Tags:#market research#company intelligence#icp#lead targeting#tam sizing#zoominfo#filter refinement
One-click install
npx skills add https://github.com/Zoominfo/zoominfo-mcp-plugin --skill tam-sizer
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: tam-sizer
Source: https://github.com/Zoominfo/zoominfo-mcp-plugin/tree/main/skills/tam-sizer
Command: npx skills add https://github.com/Zoominfo/zoominfo-mcp-plugin --skill tam-sizer

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill turns an ICP description into a quantified TAM by iteratively resolving and validating the firmographic/technographic filter set against ZoomInfo’s verified company database, so you can both get a count and produce a reusable filter artifact.

Core Features & Use Cases

  • Iterative TAM sizing with filter refinement: Produces a headline company count and actionable refinement options across multiple passes until the ICP feels right.
  • Taxonomy resolution with safeguards: Uses taxonomy lookups for industry terms and blocks silent fallback when a taxonomy match is missing, prompting you to confirm or adjust.
  • Data-sparsity and noise handling: Runs a data-sparsity probe for revenue/funding constraints and applies noise-adjusted TAM when keyword/taxonomy results appear noisy.

Use cases include territory and capacity design, investor-ready market sizing, and ICP sharpening that other skills can immediately reuse as a working filter set.

Quick Start

Ask for TAM for a described ICP, for example: "Size the TAM for my ICP of B2B cybersecurity software companies in the US with 200-1000 employees, and refine my filters until the universe matches my intent."

Frequently Asked Questions about tam-sizer

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

FAQPage Schema
How do I calculate total addressable market for a specific ICP?▼

You calculate total addressable market by iteratively resolving firmographic and technographic filters against a verified company database to return an operative TAM count and a reusable filter set.

What is the best way to size TAM for B2B lead targeting using firmographic filters?▼

The best way to size TAM for lead targeting is applying iterative filter refinement across multiple passes, using taxonomy lookups for industry terms and data-sparsity probing for revenue constraints until the universe matches your intent.

How does TAM sizing handle data sparsity and noisy technographic filter results?▼

TAM sizing handles noisy results by running a data-sparsity probe for revenue or funding constraints and applying noise-adjusted TAM estimates derived from representative samples to ensure accurate market counts.

Can I use ICP sizing for territory design and investor-ready market analysis?▼

Yes, you can use ICP sizing for territory and capacity design, investor-ready market sizing, and ICP sharpening by generating sizing bands and structured final filter sets that downstream list-building tools can consume.

Does taxonomy resolution block silent fallback when sizing an addressable market?▼

Yes, taxonomy resolution blocks silent fallback when a taxonomy match is missing, prompting you to confirm or adjust industry terms to ensure the addressable market sizing remains accurate and aligned with your intent.

How do I resolve ambiguous geography constraints when sizing my TAM?▼

You resolve ambiguous geography constraints during the iterative filter resolution process, which validates firmographic and technographic parameters against the company database to output a structured and operative final filter set.

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