Plan Hardener

Purpose

Plan Hardener is a structured project planning review skill.

Its purpose is to improve software, AI, automation, SaaS, web app, and agentic system plans by exposing hidden assumptions, missing requirements, failure modes, operational risks, security issues, over-engineering, and validation gaps.

The goal is not to make the plan look perfect. The goal is to make the plan more realistic, testable, secure, maintainable, and implementation-ready.

Core Principle

Never claim that a plan is 100% correct or perfect.

Instead: