ITWASNOTG

Skill Builder — Design skill for Claude Code

Design community

A Claude skill for building Claude skills.

How to install Skill Builder

This entry records only its repository, not the path inside it, so there is no exact command to give. Open ITWASNOTG/skill-builder and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Skill Builder does

A Claude skill for building Claude skills. Guides you through 5 phases to design, write, and validate any Claude skill from scratch.

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README

SkillBuilder — A Claude skill for building Claude skills

Building a Claude skill from scratch has friction. The folder name has to be exactly right, the YAML needs real trigger phrases or Claude ignores it, and the instructions need to be specific enough that Claude actually follows them.

SkillBuilder asks you questions across 5 phases, then generates a complete, ready-to-upload skill folder.

Works in English and Spanish.

What it does

Runs 5 phases in order:

Use Case — nails down exactly what workflow the skill should handle
Trigger Conditions — writes the description field with phrases users would actually say
Workflow Design — picks the right pattern (sequential, multi-MCP, iterative, context-aware, or domain intelligence)
Generate Files — outputs the complete SKILL.md ready to copy-paste
Validate — runs the full checklist before delivering anything

Installation

Claude.ai

Download this repo as a ZIP (Code > Download ZIP)
Inside the ZIP, find the skill-builder/ folder and compress it separately
Go to claude.ai > Settings > Capabilities > Skills > Upload
Upload the skill-builder.zip

Claude Code

Clone or download this repo, then copy `skill-builder/` to your Claude skills directory:

# Mac / Linux
cp -r skill-builder ~/.claude/skills/

# Windows (PowerShell)
Copy-Item -Recurse skill-builder "$env:USERPROFILE\.claude\skills\"

Usage

Describe what you want to build:

"Build a skill for generating SEO content for my website"
"Crea un skill para planificar sprints en Linear"
"New skill to automate my PDF report workflow"
"Help me make a skill for code review using Sentry"

SkillBuilder asks questions phase by phase and produces the complete skill at the end.

Folder structure

skill-builder/               ← the skill folder (this is what you upload)
├── SKILL.md                 ← main instructions (5 phases)
└── references/
    └── vali