Size the total addressable market (TAM) for an Ideal Customer Profile (ICP) using ZoomInfo's verified company database. Iteratively refine the firmographic and technographic filter set with the user until the account universe matches their intent — then return both the count and the working filter set that other skills (build-list, score-accounts) can consume.
Install
npx skills add Zoominfo/zoominfo-mcp-plugin --skill tam-sizernpx skills add Zoominfo/zoominfo-mcp-plugin --skill tam-sizer -a claude-code -gnpx skills add Zoominfo/zoominfo-mcp-plugin --skill tam-sizer -a codex -ggemini skills install https://github.com/Zoominfo/zoominfo-mcp-plugin.git --path skills/tam-sizergh skill install Zoominfo/zoominfo-mcp-plugin tam-sizergit clone --depth 1 https://github.com/Zoominfo/zoominfo-mcp-plugin /tmp/Zoominfo__zoominfo-mcp-plugin
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/Zoominfo__zoominfo-mcp-plugin/skills/tam-sizer ~/.claude/skills/tam-sizer # Claude Code
cp -R /tmp/Zoominfo__zoominfo-mcp-plugin/skills/tam-sizer ~/.agents/skills/tam-sizer # Codex, Cursor, Gemini CLI, Copilot, OpenCode