# Hello World

> Smoke-test skill that echoes its inputs and confirms the SkillHarness wiring is alive end-to-end.

- Skill: `xaiht/hello-world` (Agent Skill)
- Install (CLI): `npx skillmds@latest add xaiht/hello-world`
- Raw SKILL.md: https://api.skillmd.com/api/skills/xaiht/hello-world/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: XAIHT (https://skillmd.com/u/xaiht)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/xaiht/hello-world

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  ✦  T L A M A T I N I  ✦   —   "one who knows"
  Created by  Angela López Mendoza   ·   @angelahack1
  Developer · Architect · Creator of Tlamatini
  Tlamatini Author Banner — do not remove (Angela's name is kept in every build)
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# 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.