Add a pre-build reality check to your AI agent — one line, every project

Your AI coding agent just spent 3 hours building a DNS propagation checker. You were impressed. The code was clean, tests passed, CLI looked great. Then you searched GitHub: 47 repos doing exactly the same thing. One of them has 2,000+ stars and a published npm package. The agent never checked. You never asked it to. Nobody does. This is the most common failure mode of AI-assisted development. Not bad code. Not wrong architecture. Just building something that already exists, because the agent was never told to look first. The blind spot Claude Code, Cursor, Windsurf, GitHub Copilot -- they are all excellent at writing code. Give them a spec and they will produce working software. But they have zero awareness of what already exists in the ecosystem. They don't search GitHub before scaffolding a new project. They don't check if there's already a popular npm package for what you described. They don't scan Hacker News to see if someone shipped the same idea last week. The result: you inves