CreateSkill
Complete PAI skill development lifecycle across two tracks. Structure track: scaffold new skills (TitleCase dirs, flat 2-level max, Workflows/ + Tools/ + References/ only), validate against canonical format, canonicalize existing skills. Effectiveness track (Anthropic methodology): TestSkill spawns with-skill vs baseline agents in parallel and compares outputs, ImproveSkill diagnoses root causes and rewrites instructions with reasoning over rigid constraints, OptimizeDescription generates 20 should/shouldn't-trigger test queries and rewrites for accuracy. Guides from Thariq Shihipar (Mar 2026): Gotchas section mandatory, BPE check before finalizing, progressive disclosure (frontmatter → SKILL.md body → reference files), on-demand hooks. USE WHEN create skill, new skill, validate skill, test skill, improve skill, optimize description, skill not triggering, skill overtriggering, canonicalize, scaffold skill, skill quality. NOT FOR TypeScript CLI generation (use CreateCLI).
Install
Install this Claude and Codex skill with the command below. The command stays visible even when copy support is unavailable.
git clone https://github.com/danielmiessler/LifeOS /tmp/LifeOS && ln -s /tmp/LifeOS/Releases/v5.0.0/.claude/skills/CreateSkill ~/.claude/skills/CreateSkillFrom README
Customization Before executing, check for user customizations at: /.claude/PAI/USER/SKILLCUSTOMIZATIONS/CreateSkill/ If this directory exists, load and apply any PREFERENCES.md, configurations, or resources found there. These override default behavior. If the directory does not exist, proceed with skill defaults. 🚨 MANDATORY: Voice Notification (REQUIRED BEFORE ANY ACTION) You MUST send this notification BEFORE doing anything else when this skill is invoked. Send voice notification: Output text notification: This is not optional. Execute this curl command immediately upon skill invocation. CreateSkill Complete skill development lifecycle: structure (create, validate, canonicalize) + effectiveness (test, improve, optimize triggers). Structural workflows ensure skills follow PAI conventions. Effectiveness workflows — inspired by Anthropic's skill-creator — ensure skills actually work and trigger reliably.
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