If you're building anything with more than three files or making architecture decisions, this skill walks you through a five-step workflow: stop, plan with extended thinking, announce your file order, create foundations before dependents, then verify all references resolve. The token savings are real. A medium project drops from 12K to 4.5K tokens by planning CSS and config files first instead of refactoring later. It works identically in Web, API, and CLI, with CLI-specific bonuses like subagent delegation that keeps 5K tokens of deep reasoning out of your main context. The references folder has ready-made workflows for research, refactoring, and feature development. It's opinionated about not creating files before you plan, which will feel slow once but save you context on every project after.
npx skills add https://github.com/josiahsiegel/claude-plugin-marketplace --skill context-master