joi

Generate, review, and optimize project-level prompt files for Claude Code -- including CLAUDE.md, .claude/rules/*.md, and .claude/agents/*.md. Use this skill whenever someone mentions CLAUDE.md, AGENTS.md, project prompts, coding instructions, agent definitions, rules files, or asks for help setting up Claude Code for a project. Also trigger when the user says "prompt file", "project instructions", "write rules for Claude", "configure my agent", or wants to improve how Claude behaves in their codebase. If the user has a repo open and asks about coding standards, conventions, or "how should I tell Claude about my project", this skill applies.