hello-world

hello-world is a skill for Claude Code, Codex from XAIHT/Tlamatini. It costs 22 tokens per session (385 once invoked), scanned A, original, MIT.

A small smoke test for the SkillHarness integration. It accepts an optional name and returns a greeting without using files, shell commands, or other side effects.

In plain words
What is it for?
Use it to test the SkillHarness wiring before relying on other skills.
Why use it?
It provides a simple way to confirm that skills can be invoked and connected end to end.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: built for openclaw.

Good fit Use it to test the SkillHarness wiring before relying on other skills.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/xaiht/tlamatini/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 XAIHT/Tlamatini --skill hello_world
Clone the repo
git clone --depth 1 https://github.com/XAIHT/Tlamatini

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 hello-world

README.md
[![agentmods](https://agentmods.dev/badge/skills/xaiht/tlamatini/hello_world.svg)](https://agentmods.dev/skills/xaiht/tlamatini/hello_world)
Your own site
<a href="https://agentmods.dev/skills/xaiht/tlamatini/hello_world"><img src="https://agentmods.dev/badge/skills/xaiht/tlamatini/hello_world.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 385 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 $0.00022 $0.00385
Opus 5 $0.00011 $0.00192
Sonnet 5 $0.00004 $0.00077
Haiku 4.5 $0.00002 $0.00038

Measured 7d ago against content hash ff186b0ec2cc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, 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 7d 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.

Tlamatini/agent/skills_pkg/hello_world/SKILL.md · 50 lines

What it actually says

Hello World

This skill exists to prove the SkillHarness pipeline is wired correctly. It must:

  1. Accept an optional who input (default: "world").
  2. Return {"greeting": "hello, <who>"} exactly.

There are no side effects. There is no shell. There is no file IO.

If this skill cannot be invoked end-to-end, the SkillHarness is broken and no other skill should be trusted. Treat that as the smoke-test gate.

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 · 50 lines · 22 tokens per session scan A ff186b0ec2cc

Subscribe to this mod's changes

hello-world is a skill published in the GitHub repository XAIHT/Tlamatini (16 stars, last pushed yesterday), licensed MIT. It adds 22 tokens to every session and 385 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 2026-08-30.