skill-designer

skill-designer is a skill for Claude Code, Codex from tradermonty/claude-trading-skills. It costs 48 tokens per session (645 once invoked), scanned A, original, MIT.

A tool that turns a structured skill idea into a detailed prompt for creating a complete Claude Code skill. The generated plan can cover instructions, reference files, helper scripts, and tests.

In plain words
What is it for?
Use it to prepare prompts for automatically creating new skills, bootstrap a skill from JSON, and support reviews of generated skill designs.
Why use it?
It gives skill generation a consistent starting structure instead of requiring every skill to be designed from scratch. This helps developers turn a short idea specification into an implementation plan.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

not rated 2.8krepo +32 today A scan Socket: passSnyk: passSkillSpector: pass 48 tokens original MIT

Good fit Use it to prepare prompts for automatically creating new skills, bootstrap a skill from JSON, and support reviews of generated skill designs.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tradermonty/claude-trading-skills/skill-designer
About the project

Claude Trading Skills is a collection of Claude Code workflows for individual investors who want structured market analysis, charting, economic-calendar review, screening, trade planning, journaling, and risk management. It is designed for people using long-term investing, ETFs, dividend stocks, and disciplined swing trading, and the catalogue entries package these workflows as skills, agents, commands, settings, and instructions.

tradermonty/claude-trading-skills · 2,813 stars · on GitHub · tradermonty.github.io

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add tradermonty/claude-trading-skills --skill skill-designer
Clone the repo
git clone --depth 1 https://github.com/tradermonty/claude-trading-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for skill-designer

README.md
[![agentmods](https://agentmods.dev/badge/skills/tradermonty/claude-trading-skills/skill-designer/github.svg)](https://agentmods.dev/skills/tradermonty/claude-trading-skills/skill-designer)
Your own site
<a href="https://agentmods.dev/skills/tradermonty/claude-trading-skills/skill-designer"><img src="https://agentmods.dev/badge/skills/tradermonty/claude-trading-skills/skill-designer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for skill-designer

Your own site · 80×15
<a href="https://agentmods.dev/skills/tradermonty/claude-trading-skills/skill-designer"><img src="https://agentmods.dev/badge/skills/tradermonty/claude-trading-skills/skill-designer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 645 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Socket pass 1 Apr 2026
  • Snyk pass 1 Apr 2026
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00048 $0.00645
Opus 5 $0.00024 $0.00322
Sonnet 5 $0.00010 $0.00129
Haiku 4.5 $0.00005 $0.00064

Measured 9d ago against content hash 7d562cf8ad73, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

skill-designer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/build_design_prompt.py, scripts/tests/conftest.py, scripts/tests/test_build_design_prompt.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/skill-designer/SKILL.md · 87 lines

How it starts

The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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:

  1. Loads the idea JSON
  2. Reads all three reference files (structure guide, quality checklist, template)
  3. Lists existing skills (up to 20) to prevent duplication
  4. 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

Read the full file on GitHub · 87 lines

Files

What ships with it

7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 87 lines · 48 tokens per session scan A 7d562cf8ad73

Subscribe to this mod's changes

skill-designer is a skill published in the GitHub repository tradermonty/claude-trading-skills (2,813 stars, last pushed today), licensed MIT. It adds 48 tokens to every session and 645 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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