skill-installer

skill-installer is a skill for Codex from rojim666/SztuCode. It costs 54 tokens per session (793 once invoked), scanned A, a copy of skill-installer, MIT.

A tool for installing Codex skills from a curated collection or from a specified GitHub repository path.

In plain words
What is it for?
Use it to list available curated or experimental skills, install a named skill, or install one from another GitHub repository.
Why use it?
It avoids manual copying and helps place requested skills in the expected Codex skills directory.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: mentions Codex.

Good fit Use it to list available curated or experimental skills, install a named…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rojim666/sztucode/skill-installer
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 rojim666/SztuCode --skill skill-installer
Clone the repo
git clone --depth 1 https://github.com/rojim666/SztuCode

Made for: 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-installer

README.md
[![agentmods](https://agentmods.dev/badge/skills/rojim666/sztucode/skill-installer.svg)](https://agentmods.dev/skills/rojim666/sztucode/skill-installer)
Your own site
<a href="https://agentmods.dev/skills/rojim666/sztucode/skill-installer"><img src="https://agentmods.dev/badge/skills/rojim666/sztucode/skill-installer.svg" alt="Measured on agentmods" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 793 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 86% copy Near-identical to another mod 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 $0.00054 $0.00793
Opus 5 $0.00027 $0.00396
Sonnet 5 $0.00011 $0.00159
Haiku 4.5 $0.00005 $0.00079

Measured 7d ago against content hash 8f55a804adb3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

skill-installer 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.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/github_utils.ts, scripts/install_skill_from_github.ts, scripts/list_skills.ts), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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

This is a copy

86% identical to skill-installer — 116 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

packages/runtime-ts/skills/skill-installer/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Installer

Helps install skills. By default these are from https://github.com/openai/skills/tree/main/skills/.curated, but users can also provide other locations. Experimental skills live in https://github.com/openai/skills/tree/main/skills/.experimental and can be installed the same way.

Use the helper scripts based on the task:

  • List skills when the user asks what is available, or if the user uses this skill without specifying what to do. Default listing is .curated, but you can pass --path skills/.experimental when they ask about experimental skills.
  • Install from the curated list when the user provides a skill name.
  • Install from another repo when the user provides a GitHub repo/path (including private repos).

Install skills with the helper scripts.

Communication

When listing skills, output approximately as follows, depending on the context of the user's request. If they ask about experimental skills, list from .experimental instead of .curated and label the source accordingly: """ Skills from {repo}:

  1. skill-1
  2. skill-2 (already installed)
  3. ... Which ones would you like installed? """

After installing a skill, tell the user it will be available on their next turn.

Scripts

All of these scripts use network, so when running in the sandbox, request escalation when running them.

  • npx tsx scripts/list_skills.ts (prints skills list with installed annotations)
  • npx tsx scripts/list_skills.ts --format json
  • Example (experimental list): npx tsx scripts/list_skills.ts --path skills/.experimental
  • npx tsx scripts/install_skill_from_github.ts --repo <owner>/<repo> --path <path/to/skill> [<path/to/skill> ...]
  • npx tsx scripts/install_skill_from_github.ts --url https://github.com/<owner>/<repo>/tree/<ref>/<path>
  • Example (experimental skill): npx tsx scripts/install_skill_from_github.ts --repo openai/skills --path skills/.experimental/<skill-name>

Behavior and Options

  • Defaults to direct download for public GitHub repos.
  • If download fails with auth/permission errors, falls back to git sparse checkout.
  • Aborts if the destination skill directory already exists.
  • Installs into $CODEX_HOME/skills/<skill-name> (defaults to ~/.codex/skills).
  • Multiple --path values install multiple skills in one run, each named from the path basename unless --name is supplied.
  • Options: --ref <ref> (default main), --dest <path>, --method auto|download|git.

Read the full file on GitHub · 59 lines

Files

What ships with it

7 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.

  1. 7d ago First seen · 59 lines · 54 tokens per session scan A 8f55a804adb3

Subscribe to this mod's changes

skill-installer is a skill published in the GitHub repository rojim666/SztuCode (51 stars, last pushed yesterday), licensed MIT. It adds 54 tokens to every session and 793 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to skill-installer, differing in 116 lines, and is treated as a copy.