What problem does it solve? Deciding whether to build a free tool (calculator, generator, analyzer) for lead generation or SEO is risky without a structured way to validate demand, scope an MVP, and design lead capture. This Skill provides an engineering-as-marketing framework to evaluate, plan, and launch free tools that attract leads and links. ## Core Features & Use Cases - Idea Validation: Score tool concepts against an 8-factor evaluation scorecard covering search demand, audience match, uniqueness, and build feasibility. - Tool Type Guidance: Choose among calculators, generators, analyzers, testers, libraries, and interactive tools with detailed examples per industry. - Lead Capture & SEO Strategy: Design gating approaches (ungated, partial, fully gated) and keyword strategies for tool landing pages. - Use Case: A SaaS company selling HR software wants to build an ROI calculator. Use this Skill to validate the concept, define MVP inputs and outputs, decide on partial email gating, and plan the SEO keyword strategy for the tool page. ## Quick Start Help me evaluate whether building a free ROI calculator is a good lead generation strategy for my product and outline the MVP scope.