hello-world

hello-world is a skill for Claude Code from altaidevorg/altai-app. It costs 21 tokens per session (59 once invoked), scanned A, original, Apache-2.0.

A sample greeting skill that demonstrates how an add-on's instruction file can be structured.

In plain words
What is it for?
Use it when a user asks for a greeting; it returns the sample greeting and a brief explanation of what plugins can do in ALTAI.
Why use it?
It provides a small example for understanding plugin or skill behaviour without involving a real development task.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the altai-sample plugin — 2 skills, 1 hook shipped together

Good fit Use it when a user asks for a greeting; it returns the sample greeting and a brief explanation of what plugins can do in ALTAI.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/altaidevorg/altai-app/hello-world
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 altaidevorg/altai-app --skill hello-world
Clone the repo
git clone --depth 1 https://github.com/altaidevorg/altai-app

Made for: Claude Code.

Or install altai-sample, the plugin that ships this one along with the rest of its 2 skills, 1 hook.

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 hello-world

README.md
[![agentmods](https://agentmods.dev/badge/skills/altaidevorg/altai-app/hello-world.svg)](https://agentmods.dev/skills/altaidevorg/altai-app/hello-world)
Your own site
<a href="https://agentmods.dev/skills/altaidevorg/altai-app/hello-world"><img src="https://agentmods.dev/badge/skills/altaidevorg/altai-app/hello-world.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 59 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00021 $0.00059
Opus 5 $0.00010 $0.00030
Sonnet 5 $0.00004 $0.00012
Haiku 4.5 $0.00002 $0.00006

Measured 8d ago against content hash bbcb6716ea7f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

hello-world 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.

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.

docs/sample-plugin/skills/hello-world/SKILL.md · 7 lines

What it actually says

When the user asks for a greeting, respond with "Hello from altai-sample!" and a short summary of what plugins can do in ALTAI.

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 · 7 lines · 21 tokens per session scan A bbcb6716ea7f

Subscribe to this mod's changes

hello-world is a skill published in the GitHub repository altaidevorg/altai-app (2 stars, last pushed today), licensed Apache-2.0. It adds 21 tokens to every session and 59 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 2026-08-31.

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