What is create-agent-skills?

Guidance for creating Claude Code skills and slash commands, which are reusable instructions or actions available inside Claude Code.

Use it when authoring, improving, or organizing SKILL.md files, slash commands, supporting resources, and skill configuration.

It explains how to choose between a simple command file and a skill folder with supporting scripts, templates, or reference material, and how their file format works.

create-agent-skills — Skill for Claude Code by tajmahal226

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 tajmahal226/compound-engineering-plugin --skill create-agent-skills

Clone the repo

git clone --depth 1 https://github.com/tajmahal226/compound-engineering-plugin

Made for: Claude Code.

Or install compound-engineering, the plugin that ships this one along with the rest of its 20 skills, 17 commands, 1 MCP server.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/tajmahal226/compound-engineering-plugin/create-agent-skills/github.svg)](https://agentmods.dev/skills/tajmahal226/compound-engineering-plugin/create-agent-skills)

Your own site

<a href="https://agentmods.dev/skills/tajmahal226/compound-engineering-plugin/create-agent-skills"><img src="https://agentmods.dev/badge/skills/tajmahal226/compound-engineering-plugin/create-agent-skills/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/tajmahal226/compound-engineering-plugin/create-agent-skills"><img src="https://agentmods.dev/badge/skills/tajmahal226/compound-engineering-plugin/create-agent-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,055 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.

Model	Per session	Once invoked
Fable 5.1	$0.00046	$0.02055
Opus 5	$0.00023	$0.01027
Sonnet 5	$0.00009	$0.00411
Haiku 4.5	$0.00005	$0.00205

Measured 9d ago against content hash 31bd9a91e794, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

create-agent-skills 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

create-agent-skills — 92% identical, 17 lines differ

plugins/compound-engineering/skills/create-agent-skills/SKILL.md · 276 lines

How it starts

The opening of the file, as written. The whole thing — 276 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Creating Skills & Commands

This skill teaches how to create effective Claude Code skills following the official specification from code.claude.com/docs/en/skills.

Commands and Skills Are Now The Same Thing

Custom slash commands have been merged into skills. A file at .claude/commands/review.md and a skill at .claude/skills/review/SKILL.md both create /review and work the same way. Existing .claude/commands/ files keep working. Skills add optional features: a directory for supporting files, frontmatter to control invocation, and automatic context loading.

If a skill and a command share the same name, the skill takes precedence.

When To Create What

Use a command file (commands/name.md) when:

Simple, single-file workflow
No supporting files needed
Task-oriented action (deploy, commit, triage)

Use a skill directory (skills/name/SKILL.md) when:

Need supporting reference files, scripts, or templates
Background knowledge Claude should auto-load
Complex enough to benefit from progressive disclosure

Both use identical YAML frontmatter and markdown content format.

Standard Markdown Format

Use YAML frontmatter + markdown body with standard markdown headings. Keep it clean and direct.

---
name: my-skill-name
description: What it does and when to use it
---

# My Skill Name

## Quick Start
Immediate actionable guidance...

## Instructions
Step-by-step procedures...

## Examples
Concrete usage examples...

Frontmatter Reference

All fields are optional. Only description is recommended.

Field	Required	Description
`name`	No	Display name. Lowercase letters, numbers, hyphens (max 64 chars). Defaults to directory name.
`description`	Recommended	What it does AND when to use it. Claude uses this for auto-discovery. Max 1024 chars.
`argument-hint`	No	Hint shown during autocomplete. Example: `[issue-number]`
`disable-model-invocation`	No	Set `true` to prevent Claude auto-loading. Use for manual workflows like `/deploy`, `/commit`. Default: `false`.
`user-invocable`	No	Set `false` to hide from `/` menu. Use for background knowledge. Default: `true`.
`allowed-tools`	No	Tools Claude can use without permission prompts. Example: `Read, Bash(git *)`
`model`	No	Model to use. Options: `haiku`, `sonnet`, `opus`.
`context`	No	Set `fork` to run in isolated subagent context.
`agent`	No	Subagent type when `context: fork`. Options: `Explore`, `Plan`, `general-purpose`, or custom agent name.

Read the full file on GitHub · 276 lines

Files

What ships with it

25 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.

9d ago First seen · 276 lines · 46 tokens per session scan A 31bd9a91e794

Subscribe to this mod's changes

create-agent-skills is a skill published in the GitHub repository tajmahal226/compound-engineering-plugin (4 stars, last pushed 6mo ago), licensed MIT. It adds 46 tokens to every session and 2,055 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 2026-08-31.

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