skill-creator

skill-creator is a skill for Claude Code, Codex from citedy/adclaw. It costs 38 tokens per session (941 once invoked), scanned A, original, Apache-2.0.

A guide for creating custom skills: folders with a SKILL.md file that teach an agent new tools, workflows, or subject knowledge.

In plain words
What is it for?
Use it to create new agent skills and organize their instructions, reference files, and helper scripts.
Why use it?
It provides a defined structure for extending an agent without having to design the skill format from scratch.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: built for openclaw.

Good fit Use it to create new agent skills and organize their instructions, reference files, and helper scripts.

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

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-creator

README.md
[![agentmods](https://agentmods.dev/badge/skills/citedy/adclaw/skill-creator/github.svg)](https://agentmods.dev/skills/citedy/adclaw/skill-creator)
Your own site
<a href="https://agentmods.dev/skills/citedy/adclaw/skill-creator"><img src="https://agentmods.dev/badge/skills/citedy/adclaw/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/citedy/adclaw/skill-creator"><img src="https://agentmods.dev/badge/skills/citedy/adclaw/skill-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 941 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Rogue Agent · line 5
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 $0.00038 $0.00941
Opus 5 $0.00019 $0.00470
Sonnet 5 $0.00008 $0.00188
Haiku 4.5 $0.00004 $0.00094

Measured 7d ago against content hash 343e0bda2f0d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

skill-creator scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- curl
src/adclaw/agents/skills/skill-creator/SKILL.md · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Creator

You can create new skills for the user. A skill is a directory containing a SKILL.md file and optional references/ and scripts/ subdirectories.

Skill Directory Structure

my-skill/
├── SKILL.md              # Required: skill definition and instructions
├── references/           # Optional: reference documentation
│   └── api-docs.md
└── scripts/              # Optional: executable scripts
    └── helper.py

SKILL.md Format

The SKILL.md file must start with YAML frontmatter (between --- delimiters), followed by markdown instructions.

Required Frontmatter Fields

---
name: my-skill-name          # Unique identifier (lowercase, hyphens allowed)
description: >               # Brief description of what the skill does
  A short description of the skill's purpose and capabilities.
---

Optional Frontmatter Fields

---
name: my-skill-name
title: "My Skill Display Name"    # Human-readable title
description: >
  Description here.
version: "1.0.0"
author: Your Name
tags:
  - category1
  - category2
metadata:
  openclaw:
    emoji: "🔧"                  # Emoji icon for the skill
    requires:
      env:                        # Required environment variables
        - MY_API_KEY
      bins:                       # Required system binaries
        - curl
    primaryEnv: MY_API_KEY        # Main env var for authentication
---

Markdown Body

After the frontmatter, write the skill instructions in markdown. This is what the agent reads to understand how to use the skill. Include:

  1. Overview — what the skill does
  2. Available tools/commands — what the agent can do with this skill
  3. Usage examples — concrete examples of how to use each capability
  4. Important notes — constraints, rate limits, authentication requirements

How to Create a Skill

When the user asks to create a skill:

  1. Ask the user what the skill should do
  2. Create the skill directory in the customized skills location
  3. Write the SKILL.md file with proper frontmatter and instructions
  4. Optionally add reference docs in references/
  5. Optionally add helper scripts in scripts/
  6. Enable the skill so it appears in active skills

Read the full file on GitHub · 145 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. 7d ago First seen · 145 lines · 38 tokens per session scan A 343e0bda2f0d

Subscribe to this mod's changes

skill-creator is a skill published in the GitHub repository citedy/adclaw (36 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 38 tokens to every session and 941 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.