skill-creator

skill-creator is a skill for Claude Code from KroMiose/nekro-agent. It costs 72 tokens per session (1,930 once invoked), scanned A, original, no licence file.

A guide for creating, changing, and improving skills for Claude Code, an AI coding assistant.

In plain words
What is it for?
It is intended for building new skills, packaging an existing process, and refining a skill’s instructions or trigger description.
Why use it?
It helps turn repeated work into a documented workflow and improve when that workflow should be used.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit It is intended for building new skills, packaging an existing process, and…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kromiose/nekro-agent/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 KroMiose/nekro-agent --skill skill-creator
Clone the repo
git clone --depth 1 https://github.com/KroMiose/nekro-agent

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/kromiose/nekro-agent/skill-creator.svg)](https://agentmods.dev/skills/kromiose/nekro-agent/skill-creator)
Your own site
<a href="https://agentmods.dev/skills/kromiose/nekro-agent/skill-creator"><img src="https://agentmods.dev/badge/skills/kromiose/nekro-agent/skill-creator.svg" alt="Measured on agentmods" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,930 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 unknown 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 $0.00072 $0.01930
Opus 5 $0.00036 $0.00965
Sonnet 5 $0.00014 $0.00386
Haiku 4.5 $0.00007 $0.00193

Measured 7d ago against content hash b8db475be247, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, 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 7d 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.

nekro_agent/builtin_skills/skill-creator/SKILL.md · 228 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 7d ago First seen · 228 lines · 72 tokens per session scan A b8db475be247

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository KroMiose/nekro-agent (1,113 stars, last pushed 10d ago), with no licence file. It adds 72 tokens to every session and 1,930 once invoked, about $0.0004 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 2026-08-30.

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