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apple-hig

Apple Human Interface Guidelines as 14 agent skills covering platforms, foundations, components, patterns, inputs, and technologies for iOS, macOS, visionOS, watchOS, and tvOS.

61

Quality

72%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./skills/apple-hig/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

72%

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 lean, well-organized catalogue shim that points cleanly to an upstream bundle, but its install workflow is vague and lacks concrete executable steps beyond opening the repo URL.

Suggestions

Provide a concrete install command (e.g., `git clone` into the skills directory or a specific path) instead of deferring all detail to the upstream README.

Spell out the invoke step with an example trigger phrase so the workflow end-to-end is unambiguous.

Add a brief verification step (e.g., confirm the skill appears in the agent's skill list) so the sequence has an explicit checkpoint.

DimensionReasoningScore

Conciseness

The ~28-line body is lean, assumes Claude's competence, and does not explain concepts Claude already knows; each section earns its place, though the "What it does" section repeats the frontmatter description verbatim as a minor redundancy.

3 / 3

Actionability

It offers one concrete command (`open https://github.com/raintree-technology/apple-hig-skills`) but the core instruction to "install the upstream bundle into your active agent's skills directory" is vague and defers specifics to the upstream README, leaving key details missing.

2 / 3

Workflow Clarity

A loose sequence exists (advertise in Open Design, install upstream bundle, invoke by name/triggers) but the install step is unspecified and there are no validation checkpoints, so the sequence is present yet gappy rather than fully clear.

2 / 3

Progressive Disclosure

No bundle files are present (references/scripts/assets are empty), and the under-50-line body is organized into well-signaled sections (What it does, Source, How to use) with a single one-level-deep external reference (the upstream URL), satisfying the simple-skill progressive disclosure anchor.

3 / 3

Total

10

/

12

Passed

Description

72%

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 specific about its Apple HIG scope and platforms with strong, natural trigger terms, but it omits an explicit "Use when..." usage clause, capping completeness at 2.

Suggestions

Add an explicit "Use when..." clause (e.g., "Use when designing or reviewing UIs for iOS, macOS, visionOS, watchOS, or tvOS") to the description field so completeness can reach 3.

Replace the single verb "covering" with concrete actions (e.g., "Apply", "Review", "Reference") so capabilities read as actions rather than a topic list.

DimensionReasoningScore

Specificity

Names a clear domain ("Apple Human Interface Guidelines") and enumerates coverage areas ("platforms, foundations, components, patterns, inputs, and technologies") plus five platforms, but uses only the verb "covering" and lists topics rather than concrete actions, so it does not reach the multiple-specific-actions anchor at 3.

2 / 3

Completeness

It clearly answers what the skill does, but the description field lacks an explicit "Use when..." clause; per the rubric a missing explicit trigger clause caps completeness at 2 even though triggers exist in a separate frontmatter field.

2 / 3

Trigger Term Quality

Contains natural terms users would say ("Apple Human Interface Guidelines", "iOS", "macOS", "visionOS", "watchOS", "tvOS"), reinforced by frontmatter triggers ("apple hig", "human interface", "ios design"), giving good coverage of likely phrasings.

3 / 3

Distinctiveness Conflict Risk

"Apple Human Interface Guidelines" scoped to specific Apple platforms is a clear niche with distinct triggers ("apple hig", "ios design"), making it unlikely to fire for unrelated design skills.

3 / 3

Total

10

/

12

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.

Validation15 / 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
nexu-io/open-design
Reviewed

Table of Contents

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