PlanFirst is a planning layer for AI coding agents that helps developers turn ideas into clear, phase-wise implementation plans before writing code.

Instead of letting AI tools jump straight into coding, PlanFirst analyzes your codebase, understands project context, and generates structured, verifiable plans that work seamlessly with agents like Cursor, Claude Code, and GitHub Copilot.

Built for developers who care about correctness and clarity, PlanFirst CLI helps you break down complex features, export plans for any coding agent, and verify whether the final implementation actually matches the original plan.