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hello-antigravity

A simple "Hello World" skill to test your OMA installation

57

Quality

72%

Does it follow best practices?

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Adds up to 20 points to the overall score

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SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./skills/hello-antigravity/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

78%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is a clean, well-organized demo skill that assumes competence and gives concrete steps for both using and authoring skills. It earns top marks on progressive disclosure and strong marks elsewhere, with only minor room to tighten phrasing and add a verification checkpoint.

DimensionReasoningScore

Conciseness

The body is lean and well-sectioned with only minor over-explanation (e.g. "It shows the basic structure of a skill (plugin) that Antigravity can understand"), placing it noticeably above the 3 anchor but short of the fully trimmed 5.

4 / 5

Actionability

The "Creating Your Own Skills" section gives concrete, executable steps (create a folder in plugins/, add SKILL.md, run oma install my-skill) and the example output is specific; minor gaps (no verification of the install) keep it below 5.

4 / 5

Workflow Clarity

A clear numbered sequence for creating a skill is present and the skill's own single action is unambiguous; with no destructive or batch operation there is no validation cap, but the absence of a "did it work?" checkpoint holds it at 4 rather than 5.

4 / 5

Progressive Disclosure

The skill is under 50 lines, has no external references that would need loading, and is organized into clearly labeled sections (Usage, What This Skill Does, Example Output, Creating Your Own Skills), meeting the simple-skill exception for a 5.

5 / 5

Total

17

/

20

Passed

Description

53%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is concise and third-person but tells only half the story: it states what the skill is without any explicit "use when" trigger guidance. Specificity and trigger coverage are adequate for a demo but not comprehensive.

Suggestions

Add an explicit trigger clause, e.g. "Use when the user says 'hello antigravity' or wants to verify their OMA installation is working."

Name the concrete action(s) more specifically (e.g. "prints a greeting and confirms the skill loader path") to lift specificity.

Include natural synonyms a user might say ("test OMA", "verify installation", "hello antigravity") to improve trigger term coverage.

DimensionReasoningScore

Specificity

Names the domain ("Hello World skill") and one concrete action ("test your OMA installation"), but coverage is minimal and not comprehensive, matching the 3 anchor rather than the multi-action 5.

3 / 5

Completeness

It clearly states what the skill is ("A simple Hello World skill to test your OMA installation") but provides no "Use when..." trigger guidance, so per the boundary rule completeness is capped at 3.

3 / 5

Trigger Term Quality

"Hello World" and "OMA installation" are recognizable terms a user might say, but common variations/synonyms and the actual trigger phrase ("hello antigravity", which only appears in the body) are absent.

3 / 5

Distinctiveness Conflict Risk

As a niche test/demo skill it is mostly distinct with minor overlap risk against other diagnostic skills; it lacks the explicit distinct triggers needed for a 5.

4 / 5

Total

13

/

20

Passed

Validation

93%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 15 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

Total

15

/

16

Passed

Repository
TurnaboutHero/oh-my-antigravity
Reviewed

Table of Contents

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