skill-installer

skill-installer is a skill for Codex from jSydorowicz21/Universal-AI-Infrustructure. It costs 54 tokens per session (769 once invoked), scanned A, original, no licence file.

A guide for installing Codex skills from a curated catalogue or a GitHub repository. Skills are reusable instructions that give a coding agent a specialised workflow.

In plain words
What is it for?
Use it when you want to list available skills or install one from the catalogue or a repository, including a private repository.
Why use it?
It removes the need to manually find, copy, and place skill files in the expected Codex directory.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Good fit Use it when you want to list available skills or install one from the catalogue or a repository, including a private repository.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jsydorowicz21/universal-ai-infrustructure/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 jSydorowicz21/Universal-AI-Infrustructure --skill skill-installer
Clone the repo
git clone --depth 1 https://github.com/jSydorowicz21/Universal-AI-Infrustructure

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/jsydorowicz21/universal-ai-infrustructure/skill-installer.svg)](https://agentmods.dev/skills/jsydorowicz21/universal-ai-infrustructure/skill-installer)
Your own site
<a href="https://agentmods.dev/skills/jsydorowicz21/universal-ai-infrustructure/skill-installer"><img src="https://agentmods.dev/badge/skills/jsydorowicz21/universal-ai-infrustructure/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 769 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 unknown 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 $0.00054 $0.00769
Opus 5 $0.00027 $0.00385
Sonnet 5 $0.00011 $0.00154
Haiku 4.5 $0.00005 $0.00077

Measured 8d ago against content hash 09df0ea7921f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, 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 8d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/github_utils.py, scripts/install-skill-from-github.py, scripts/list-skills.py), 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.

LifeOS/install/skills/.system/skill-installer/SKILL.md · 59 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

5 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. 8d ago First seen · 59 lines · 54 tokens per session scan A 09df0ea7921f

Subscribe to this mod's changes

skill-installer is a skill published in the GitHub repository jSydorowicz21/Universal-AI-Infrustructure (2 stars, last pushed 8d ago), with no licence file. It adds 54 tokens to every session and 769 once invoked, about $0.0003 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.

Related

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