Table of Contents * Why this matters 🔥 * Quick context 🧭 * Core idea 💡 * Playbook: Building free tools that rank 🛠️ * Tech stack and tooling ⚙️ * The real mechanics — what these tools actually look like 🔍 * Reality check — what actually works and what to skip 🧾 * How a solo builder can start tonight ⚡ * Stack note for solo builders