cli-skill

cli-skill is a skill for Claude Code, Codex from LnYo-Cly/ai4j. It costs 6 tokens per session (27 once invoked), scanned A, original, Apache-2.0.

A small example skill for a coding agent. Its description says it is used to check whether extension resources load correctly.

In plain words
What is it for?
Verifying that a coding-agent extension can load its skill resources.
Why use it?
It is intended for testing resource loading rather than solving a user-facing coding problem.

Skill for Claude CodeCodex

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 skills/lnyo-cly/ai4j/cli
Any agent
npx skills add LnYo-Cly/ai4j --skill cli
Clone the repo
git clone --depth 1 https://github.com/LnYo-Cly/ai4j

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.

agentmods badge for cli-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/lnyo-cly/ai4j/cli.svg)](https://agentmods.dev/skills/lnyo-cly/ai4j/cli)
Your own site
<a href="https://agentmods.dev/skills/lnyo-cly/ai4j/cli"><img src="https://agentmods.dev/badge/skills/lnyo-cly/ai4j/cli.svg" alt="Measured on agentmods" height="20"></a>
Per session 6 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 27 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 $0.00006 $0.00027
Opus 5 $0.00003 $0.00014
Sonnet 5 $0.00001 $0.00005
Haiku 4.5 $0.00001 $0.00003

Measured 4d ago against content hash 2245113cbd3a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

cli-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.

ai4j-cli/src/test/resources/skills/cli/SKILL.md · 9 lines

What it actually says

CLI Skill

Use this fixture skill to verify extension resource loading.

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 · 9 lines · 6 tokens per session scan A 2245113cbd3a

Subscribe to this mod's changes

cli-skill is a skill published in the GitHub repository LnYo-Cly/ai4j (428 stars, last pushed today), licensed Apache-2.0. It adds 6 tokens to every session and 27 once invoked, about $0.0000 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.

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