Codex Startup Pressure Test Skill

Codex Startup Pressure Test Skill is an open-source Codex skill that helps founders and indie hackers rigorously evaluate startup ideas before investing time building them. It accepts a startup idea as input and returns a structured, founder-style diagnosis covering core assumptions, fatal flaws, problem reality, competition, first customer moves, and a 2-week MVP direction. The skill is installed via npx and integrates directly into Codex prompts, making it fast to invoke with natural language. It is licensed under MIT and free to use, modify, and distribute.

• Verdict & Scorecard: Delivers a direct strong / weak / pivot verdict alongside a scored breakdown of the idea's viability.
• Core Assumption Finder: Identifies the single most critical assumption the startup depends on.
• Fatal Flaw Exposure: Surfaces the most dangerous weaknesses that could kill the idea before launch.
• Problem Reality Check: Validates whether the problem is real and whether people would pay to solve it.
• Competition Mapping: Maps current user behavior, direct competitors, indirect alternatives, and switching costs.
• First 10 Customers Plan: Generates a manual traction plan for finding and converting the first real customers.
• 2-Week MVP Plan: Defines the smallest possible test to validate the idea in two weeks.
• Multiple Modes: Supports focused modes including pressure-test, problem-validation, competition-map, first-10-customers, mvp-plan, and full for an all-in-one diagnosis.
• Easy Installation: Install with npx --yes codex-startup-pressure-test-skill@latest and restart Codex to discover the skill automatically.
• Manual Installation Option: Clone the repository and copy the skill directory into ~/.codex/skills/ for offline or customized setups.