What is a Codex Skill?

A Codex Skill is a specialized capability defined in a SKILL.md file that provides Claude with specific guidance, trigger keywords, and patterns for a particular task.

How do I trigger the Skill Builder?

You can trigger it by asking Claude to 'create a skill', 'add SKILL.md', or using Japanese phrases like 'スキル作成' or 'SKILL.md を追加して'.

Does this skill help with script-based tasks?

Yes, while it focuses on the SKILL.md instruction file, it also provides a framework for organizing and documenting supporting scripts in a scripts/ directory.

Where are the created skills stored?

Skills can be stored either locally within a project at .codex/skills/ or globally for your user account at ~/.codex/skills/.

Codex Skill Builder

Name: Codex Skill Builder
Author: daichan132

bydaichan132

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Productivity & Workflow

Automates the creation and maintenance of specialized Codex Skills to enhance Claude's domain-specific task performance.

Codex Skill Builder is a meta-utility designed to formalize and streamline the creation of SKILL.md files for Claude Code. It helps users define clear goals, trigger keywords, and deterministic steps for new agent capabilities, ensuring that every skill follows the single-responsibility principle. By standardizing the way skills are documented and triggered, it allows developers to turn repetitive manual workflows into reliable, automated agent behaviors across both local repositories and global environments.

Key Features

0128 GitHub stars

02Automated folder structure and kebab-case naming

03Support for both repo-local and user-wide skill scoping

04Standardized SKILL.md template generation

05Multi-language trigger keyword optimization (English and Japanese)

06Guidance on separating logic into instructions and external scripts

Use Cases

01Converting complex manual documentation into executable agent instructions

02Codifying repetitive project tasks into reusable AI agent skills

03Creating standardized templates for team-wide development workflows

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add daichan132/youtube-live-chat-fullscreen skill-builder

For use in Claude.ai and ChatGPT

Download Skill