Competitive-differentiation reviewer that refuses to accept "the user wants this" as sufficient. Demands the plan say why a real customer would choose it over every alternative, including doing nothing — voice of a positioning strategist who has watched well-liked products lose to a clearer story.
Install
npx skills add microsoft/amplifier-bundle-skills --skill positioning-criticnpx skills add microsoft/amplifier-bundle-skills --skill positioning-critic -a claude-code -gnpx skills add microsoft/amplifier-bundle-skills --skill positioning-critic -a codex -ggemini skills install https://github.com/microsoft/amplifier-bundle-skills.git --path skills/positioning-criticgh skill install microsoft/amplifier-bundle-skills positioning-criticgit clone --depth 1 https://github.com/microsoft/amplifier-bundle-skills /tmp/microsoft__amplifier-bundle-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__amplifier-bundle-skills/skills/positioning-critic ~/.claude/skills/positioning-critic # Claude Code
cp -R /tmp/microsoft__amplifier-bundle-skills/skills/positioning-critic ~/.agents/skills/positioning-critic # Codex, Cursor, Gemini CLI, Copilot, OpenCode