What is create-pi-skill?

A guide for creating pi skills, which are instruction files that change how pi handles recurring tasks.

Use it to create project, global, or publishable skills, with optional scripts and runnable examples.

It explains the required file structure and metadata so pi can discover and load a skill when needed.

create-pi-skill — Skill for Claude Code and Codex by aretw0/agents-lab

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo

git clone --depth 1 https://github.com/aretw0/agents-lab

agentmods

npx agentmods add skills/aretw0/agents-lab/create-pi-skill

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/aretw0/agents-lab/create-pi-skill/github.svg)](https://agentmods.dev/skills/aretw0/agents-lab/create-pi-skill)

Your own site

<a href="https://agentmods.dev/skills/aretw0/agents-lab/create-pi-skill"><img src="https://agentmods.dev/badge/skills/aretw0/agents-lab/create-pi-skill/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/aretw0/agents-lab/create-pi-skill"><img src="https://agentmods.dev/badge/skills/aretw0/agents-lab/create-pi-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 826 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	$0.00031	$0.00826
Opus 5.5	$0.00012	$0.00330
Sonnet 5.5	$0.00006	$0.00165
Haiku 4.5	$0.00003	$0.00083

Measured 1mo ago against content hash 340631ac2ccf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

create-pi-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 1mo 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.

packages/pi-skills/skills/create-pi-skill/SKILL.md · 125 lines

How it starts

The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Criando uma Skill Pi

Skills são o caminho mais leve para customizar o comportamento do pi. Se o problema é instrução recorrente, comece com skill. Se precisa de hooks, tools, UI ou persistência, vá de extensão.

Estrutura Mínima

skills/minha-skill/
└── SKILL.md

O SKILL.md é obrigatório. Scripts auxiliares são opcionais.

Frontmatter

---
name: minha-skill
description: >
  Descrição curta do que a skill faz. Aparece no prompt do pi como contexto
  disponível — só a descrição, não o conteúdo completo.
---

name — identificador único, usado no comando /skill:name
description — o que o pi mostra no system prompt para decidir quando carregar

Conteúdo

O corpo do SKILL.md são as instruções completas. O pi carrega sob demanda quando a tarefa casa com a descrição. Escreva como se estivesse instruindo o agente diretamente:

Explique quando usar a skill
Dê exemplos com blocos de código executáveis
Use comandos bash que o agente pode rodar via bash tool
Aponte para scripts relativos quando necessário

Com Scripts Auxiliares

skills/minha-skill/
├── SKILL.md
└── scripts/
    ├── setup.sh
    └── validate.mjs

No SKILL.md, referencie scripts com caminhos relativos:

## Setup
\`\`\`bash
./scripts/setup.sh
\`\`\`

Se os scripts têm dependências npm, inclua package.json na pasta de scripts.

Onde Colocar

Escopo	Localização
Projeto	`.pi/skills/minha-skill/SKILL.md`
Global	`~/.pi/agent/skills/minha-skill/SKILL.md`
Pacote	`skills/minha-skill/SKILL.md` (com `pi.skills` no `package.json`)

Empacotando como npm

{
  "name": "@aretw0/minha-skill",
  "keywords": ["pi-package"],
  "pi": {
    "skills": ["./skills"]
  }
}

Publicar:

npm publish --access public

Instalar:

pi install npm:@aretw0/minha-skill

Heurística: Skill vs Extension

Precisa de...	Use
Instruções recorrentes	Skill
Exemplos de uso de CLI	Skill
Templates de código	Skill
Hooks no ciclo de vida do pi	Extension
Tools customizadas para o LLM	Extension
UI no TUI (widgets, footers)	Extension
Persistência de estado	Extension

Read the full file on GitHub · 125 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.

1mo ago First seen · 125 lines · 31 tokens per session scan A 340631ac2ccf

Subscribe to this mod's changes

create-pi-skill is a skill published in the GitHub repository aretw0/agents-lab (11 stars, last pushed 3mo ago), licensed MIT. It adds 31 tokens to every session and 826 once invoked, about $0.0001 per session on Opus 5.5. 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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