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Hello World — measured AI agent skill | DecimalAI

hayatelin/hello-world

SkillScore86Maintained

A minimal, valid example skill that greets the user and demonstrates the SKILL.md format end to end.

by hayatelin

Links this skill to your agents and keeps it current with the author’s updates.

Automatic

Coding pack

decimalai skills pull hayatelin-hello-world

Get this skill — curl · raw file

curl -fsSL https://app.decimal.ai/s/hayatelin-hello-world/SKILL.md

Raw file: /s/hayatelin-hello-world/SKILL.md ↗ · machine-readable summary at /s/hayatelin-hello-world.json ↗

In productionGlobal

how this skill behaves on real traffic · last 30 days

No production data for this skill yet — usage numbers appear here once agents start running it.

Anonymized aggregate across every org using this skill — proof from real production use, not a demo.

Does this skill help? · Benchmark: with vs. withoutsign in to run this on your agents

22 test cases from the publisher’s eval.yaml · each run twice on gemini-3.6-flash — with the skill injected, then without · last run 7d ago

Yes — +55% lift-27% tokens0% turns86% of whole cases pass with skill (19/22)

Test case	Without → With	Effect	Δ tokens	Δ turns
case-01	✗→✓	▲ Improved	51%	0%
case-02	✗→✓	▲ Improved	-67%	0%
case-03	✗→✓	▲ Improved	-69%	0%
case-11	✗→✓	▲ Improved	37%	0%
case-05	✗→✓	▲ Improved	15%	0%

Showing 5 of 22 cases

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/1/2026

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

hayatelin / skillhub

examples/skills/hello-world/SKILL.md

View on GitHub ↗

License MITImported 8/1/2026Version v1

Skill contents

SKILL.md

Hello World

Purpose

A tiny reference skill. It shows the exact frontmatter and section layout that skillhub lint expects, so you can copy it as a starting point.

When to use

When you want a known-good SKILL.md to test tooling against
When teaching someone the Agent Skills format

Instructions

Read the user's name from the request.
Respond with a friendly greeting: Hello, NAME! (substituting the name).
If no name is given, greet the world: Hello, world!.

Examples

Input:

greet Ada

Expected behavior:

Hello, Ada!

Want to see if hayatelin/hello-world would activate on your phrasing? Try it before you install — no LLM call, no signup.

Other measured skills in the registry, with their headline benchmark lift.