create-skill

create-skill is a command for coding agents from athola/skrills. It costs 16 tokens per session (363 once invoked), scanned A, original, MIT.

A command for creating a new coding-agent skill by finding an existing one on GitHub, generating one with a language model, or using both approaches.

In plain words
What is it for?
Use it to search for matching skills, generate new skill content, choose a target folder, preview the result, and report where the skill was created.
Why use it?
It gives you a repeatable way to start a skill when you do not already have suitable instructions, while allowing a preview before files are created.

Command

Part of the skrills plugin — 17 commands shipped together

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.

agentmods
npx agentmods add commands/athola/skrills/create-skill
Clone the repo
git clone --depth 1 https://github.com/athola/skrills

Or install skrills, the plugin that ships this one along with the rest of its 17 commands.

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/commands/athola/skrills/create-skill.svg)](https://agentmods.dev/commands/athola/skrills/create-skill)
Your own site
<a href="https://agentmods.dev/commands/athola/skrills/create-skill"><img src="https://agentmods.dev/badge/commands/athola/skrills/create-skill.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 363 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00016 $0.00363
Opus 5 $0.00008 $0.00181
Sonnet 5 $0.00003 $0.00073
Haiku 4.5 $0.00002 $0.00036

Measured 4d ago against content hash b166bec63a15, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 4d 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.

plugins/skrills/commands/create-skill.md · 40 lines

What it actually says

Create Skill

Create a new skill using the skrills MCP server.

Use the mcp__plugin_skrills_skrills__create-skill tool with:

  • name: Name or topic for the skill (required)
  • description: What the skill should do (required)
  • method: Creation method - github (search), llm (generate), both, or empirical
  • target_dir: Directory to create skill in
  • dry_run: Preview without creating files

Parse $ARGUMENTS:

  • First argument: skill name
  • Remaining text: skill description
  • --method <method> or -m <method>: Creation method (default: both)
  • --dry-run or -n: Preview mode
  • --dir <path>: Target directory

Default behavior:

  1. Search GitHub for existing skills matching the name/description
  2. If found, offer to download and adapt
  3. If not found or declined, generate a new skill using LLM

Report:

  • Search results (if method includes github)
  • Generated skill content (if method includes llm)
  • File location where skill was created

Handle errors:

  • If name/description missing: Prompt for required fields
  • If GitHub search fails: Fall back to LLM generation
  • If target directory not writable: Report path and suggest alternative
  • If skill already exists: Prompt for overwrite or new name
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. 4d ago First seen · 40 lines · 16 tokens per session scan A b166bec63a15

Subscribe to this mod's changes

create-skill is a command published in the GitHub repository athola/skrills (69 stars, last pushed today), licensed MIT. It adds 16 tokens to every session and 363 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 2026-08-30.