create-skill

create-skill is a skill for Claude Code, Codex from DorianSchlede/nexus-template. It costs 16 tokens per session (5,465 once invoked), scanned A, original, MIT.

A workflow for creating a reusable skill, including checks for first-time users and guidance on the skill's structure.

In plain words
What is it for?
Use it to create skills with instructions, supporting files, and automatic triggering rules.
Why use it?
It helps decide whether a repeated task belongs in a reusable workflow and prevents creating skills without understanding how they work.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: names the TodoWrite tool.

Good fit Use it to create skills with instructions, supporting files, and automatic triggering rules.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dorianschlede/nexus-template/create-skill
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 DorianSchlede/nexus-template --skill create-skill
Clone the repo
git clone --depth 1 https://github.com/DorianSchlede/nexus-template

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 create-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/dorianschlede/nexus-template/create-skill/github.svg)](https://agentmods.dev/skills/dorianschlede/nexus-template/create-skill)
Your own site
<a href="https://agentmods.dev/skills/dorianschlede/nexus-template/create-skill"><img src="https://agentmods.dev/badge/skills/dorianschlede/nexus-template/create-skill/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 create-skill

Your own site · 80×15
<a href="https://agentmods.dev/skills/dorianschlede/nexus-template/create-skill"><img src="https://agentmods.dev/badge/skills/dorianschlede/nexus-template/create-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,465 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.
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 $0.00016 $0.05465
Opus 5 $0.00008 $0.02733
Sonnet 5 $0.00003 $0.01093
Haiku 4.5 $0.00002 $0.00547

Measured 8d ago against content hash a1057b728894, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

create-skill 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 8d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (scripts/init_skill.py, scripts/package_skill.py, scripts/quick_validate.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.

00-system/skills/skill-dev/create-skill/SKILL.md · 576 lines

How it starts

The opening of the file, as written. The whole thing — 576 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Onboarding Awareness (CHECK BEFORE STARTING)

Before creating a skill, AI MUST check stats.pending_onboarding for learn_skills:

Pre-Flight Check (MANDATORY)

Check if learn_skills is in stats.pending_onboarding. If present AND this is user's FIRST skill:

💡 Before creating your first skill, would you like a quick 10-minute tutorial
on what makes workflows "skill-worthy"? It covers:
- The 3-criteria skill-worthiness framework
- How skills are structured (SKILL.md, scripts/, references/)
- How AI triggers skills automatically

Say 'learn skills' to start the tutorial, or 'skip' to create directly.

If user says 'skip': Proceed with skill creation but add this note at the end:

💡 Tip: Run 'learn skills' later to understand the skill system deeply.

If learn_skills NOT in pending_onboarding: Proceed normally without suggestion.

Anti-Pattern Detection

If user is creating similar items (report-jan, report-feb, report-mar pattern):

💡 I notice you're creating similar items. This is a perfect use case for
a SKILL instead of multiple builds/files. Want to 'learn skills' first
to understand how to capture this as a reusable workflow?

Create Skill

This skill provides guidance for creating effective skills.

About Skills

Skills are modular, self-contained packages that extend Claude's capabilities by providing specialized knowledge, workflows, and tools. Think of them as "onboarding guides" for specific domains or tasks—they transform Claude from a general-purpose agent into a specialized agent equipped with procedural knowledge that no model can fully possess.

What Skills Provide

  1. Specialized workflows - Multi-step procedures for specific domains
  2. Tool integrations - Instructions for working with specific file formats or APIs
  3. Domain expertise - Company-specific knowledge, schemas, business logic
  4. Bundled resources - Scripts, references, and assets for complex and repetitive tasks

Core Principles

Read the full file on GitHub · 576 lines

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. 8d ago First seen · 576 lines · 16 tokens per session scan A a1057b728894

Subscribe to this mod's changes

create-skill is a skill published in the GitHub repository DorianSchlede/nexus-template (8 stars, last pushed 7mo ago), licensed MIT. It adds 16 tokens to every session and 5,465 once invoked, about $0.0001 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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