Skill Designer Skill for Claude

Design new Claude skills from structured idea specifications. Use when the skill auto-generation pipeline needs to produce a Claude CLI prompt that creates a complete skill directory (SKILL.md, references, scripts, tests) following repository conventions.

4k tokens

context cost

the whole folder, loaded on every use

files

ships runnable scripts

copies elsewhere

how many repositories repackaged it

118

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/BaggaT236/AI-Trading-Skills --skill skill-designer

What comes with it

13 262 bytes besides the instruction

references/quality-checklist.md

references/skill-structure-guide.md

references/skill-template.md

scripts/build_design_prompt.py

scripts/tests/conftest.py

scripts/tests/test_build_design_prompt.py

The instruction itself

11 sections, as written by the author

Skill Designer

Overview

Generate a comprehensive Claude CLI prompt from a structured skill idea

specification. The prompt instructs Claude to create a complete skill directory

following repository conventions: SKILL.md with YAML frontmatter, reference

documents, helper scripts, and test scaffolding.

When to Use

The skill auto-generation pipeline selects an idea from the backlog and needs

a design prompt for claude -p

A developer wants to bootstrap a new skill from a JSON idea specification
Quality review of generated skills requires awareness of the scoring rubric

Prerequisites

Python 3.9+
No external API keys required
Reference files must exist under references/

Workflow

Step 1: Prepare Idea Specification

Accept a JSON file (--idea-json) containing:

title: Human-readable idea name
description: What the skill does
category: Skill category (e.g., trading-analysis, developer-tooling)

Accept a normalized skill name (--skill-name) that will be used as the

directory name and YAML frontmatter name: field.

Step 2: Build Design Prompt

Run the prompt builder:

python3 skills/skill-designer/scripts/build_design_prompt.py \
  --idea-json /tmp/idea.json \
  --skill-name "my-new-skill" \
  --project-root .

The script:

Loads the idea JSON
Reads all three reference files (structure guide, quality checklist, template)
Lists existing skills (up to 20) to prevent duplication
Outputs a complete prompt to stdout

Step 3: Feed Prompt to Claude CLI

The calling pipeline pipes the prompt into claude -p:

python3 skills/skill-designer/scripts/build_design_prompt.py \
  --idea-json /tmp/idea.json \
  --skill-name "my-new-skill" \
  --project-root . \
| claude -p --allowedTools Read,Edit,Write,Glob,Grep

Step 4: Validate Output

After Claude creates the skill, verify:

skills/<skill-name>/SKILL.md exists with correct frontmatter
Directory structure follows conventions
Score with dual-axis-skill-reviewer meets threshold

Output Format

The script outputs a plain-text prompt to stdout. Exit code 0 on success,

1 if required reference files are missing.

Resources

references/skill-structure-guide.md -- Directory structure, SKILL.md format, naming conventions
references/quality-checklist.md -- Dual-axis reviewer 5-category checklist (100 points)
references/skill-template.md -- SKILL.md template with YAML frontmatter and standard sections
scripts/build_design_prompt.py -- Prompt builder script (CLI interface)

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2k tokens

How to use it

Copy the folder

Take baggat236/skill-designer from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.