skill-creator

skill-creator is a skill for Claude Code from osloer-industries/vakt. It costs 63 tokens per session (1,705 once invoked), scanned A, original, MIT.

A guide for creating and improving reusable instructions called skills, which tell an AI assistant when and how to perform a particular task.

In plain words
What is it for?
It helps define a skill's purpose and trigger phrases, write its instructions, create test prompts, evaluate results, and improve the skill over time.
Why use it?
It provides a repeatable way to turn a desired workflow into instructions and test whether those instructions work reliably.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths; mentions OpenCode.

Good fit It helps define a skill's purpose and trigger phrases, write its instructions, create test prompts, evaluate results, and improve the skill over time.

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Install with agentmods
npx agentmods add skills/osloer-industries/vakt/skill-creator
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 osloer-industries/vakt --skill skill-creator
Clone the repo
git clone --depth 1 https://github.com/osloer-industries/vakt

Made for: Claude Code.

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-creator

README.md
[![agentmods](https://agentmods.dev/badge/skills/osloer-industries/vakt/skill-creator/github.svg)](https://agentmods.dev/skills/osloer-industries/vakt/skill-creator)
Your own site
<a href="https://agentmods.dev/skills/osloer-industries/vakt/skill-creator"><img src="https://agentmods.dev/badge/skills/osloer-industries/vakt/skill-creator/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-creator

Your own site · 80×15
<a href="https://agentmods.dev/skills/osloer-industries/vakt/skill-creator"><img src="https://agentmods.dev/badge/skills/osloer-industries/vakt/skill-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 63 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,705 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 $0.00063 $0.01705
Opus 5 $0.00032 $0.00852
Sonnet 5 $0.00013 $0.00341
Haiku 4.5 $0.00006 $0.00170

Measured 9d ago against content hash 2aa5c64fc6e6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

skill-creator 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.

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.

skills/skill-creator/SKILL.md · 293 lines

How it starts

The opening of the file, as written. The whole thing — 293 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Creator

A skill for creating new skills and iteratively improving them using vakt's provider-agnostic approach.

Overview

At a high level, the process of creating a skill goes like this:

  • Decide what you want the skill to do and roughly how it should do it
  • Write a draft of the skill
  • Create a few test prompts and run claude-with-access-to-the-skill on them
  • Help the user evaluate the results both qualitatively and quantitatively
  • Rewrite the skill based on feedback
  • Repeat until satisfied
  • Use vakt to install and sync the skill to all providers

Communicating with the User

The skill creator is liable to be used by people across a wide range of familiarity with coding jargon. Pay attention to context cues to understand how to phrase your communication.


Creating a Skill

Step 1: Capture Intent

Start by understanding the user's intent. The current conversation might already contain a workflow the user wants to capture.

  1. What should this skill enable Claude to do?
  2. When should this skill trigger? (what user phrases/contexts)
  3. What's the expected output format?
  4. Should we set up test cases to verify the skill works?

Step 2: Interview and Research

Proactively ask questions about edge cases, input/output formats, example files, success criteria, and dependencies.

Step 3: Create the Skill Directory

Create the skill in ~/.agents/skills/<skill-name>/:

mkdir -p ~/.agents/skills/<skill-name>

Step 4: Write the SKILL.md

Create ~/.agents/skills/<skill-name>/SKILL.md with:

---
name: skill-name
description: When to trigger, what it does. Be specific about trigger phrases.
---

# Skill Name

[Instructions for the skill...]

Key frontmatter fields:

  • name: Skill identifier (required)
  • description: When to trigger + what it does (required, this is the primary triggering mechanism)

Skill Writing Guide

Anatomy of a Skill
skill-name/
├── SKILL.md (required)
│   ├── YAML frontmatter (name, description required)
│   └── Markdown instructions
└── Bundled Resources (optional)
    ├── scripts/    - Executable code for deterministic tasks
    ├── references/ - Docs loaded into context as needed
    └── assets/     - Files used in output (templates, etc.)

Read the full file on GitHub · 293 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. 9d ago First seen · 293 lines · 63 tokens per session scan A 2aa5c64fc6e6

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository osloer-industries/vakt (3 stars, last pushed 1mo ago), licensed MIT. It adds 63 tokens to every session and 1,705 once invoked, about $0.0003 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 2026-08-31.

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