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swift-concurrency-6-2

Swift 6.2 Approachable Concurrency — single-threaded by default, @concurrent for explicit background offloading, isolated conformances for main actor types.

58

Quality

66%

Does it follow best practices?

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SecuritybySnyk

Passed

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tessl review fix ./skills/swift-concurrency-6-2/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

65%

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

The content is highly actionable with strong executable code examples and clear core patterns, but suffers from redundancy between the two "when to use" sections and the design-decisions table, and lacks validation checkpoints in the migration workflow.

Suggestions

Merge the duplicate "When to Activate" and "When to Use" sections into a single trigger list to reduce redundancy.

Add explicit validation checkpoints to the Migration Steps (e.g. "Verify the project builds with no data-race errors before enabling the next setting") to lift workflow clarity.

Consider splitting the detailed migration guide and code-pattern catalog into a reference file to improve progressive disclosure and token efficiency.

DimensionReasoningScore

Conciseness

The body is mostly efficient and the Swift 6.2-specific material is genuinely new, but the "When to Activate" and "When to Use" sections duplicate each other and the "Key Design Decisions" table restates the pattern prose, so it could be tightened.

2 / 3

Actionability

Multiple complete, executable Swift code examples (before/after data-race fixes, isolated conformances, @concurrent usage) plus concrete numbered steps for applying @concurrent make the guidance copy-paste ready.

3 / 3

Workflow Clarity

The migration steps are sequenced and the @concurrent pattern has a clear numbered flow, but the migration workflow lacks explicit validation checkpoints between steps despite migration being a risky operation, so it is capped at 2.

2 / 3

Progressive Disclosure

No bundle files exist and the ~200-line body keeps all material — migration guide, design decisions, best practices — inline in a single monolithic file, so while sections are well organized, content that could be split is not.

2 / 3

Total

9

/

12

Passed

Description

67%

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 and clearly niche-scoped to Swift 6.2's concurrency model, but lacks an explicit "Use when..." trigger clause and misses several natural trigger terms a user would actually say. It is a solid but incomplete description.

Suggestions

Add an explicit trigger clause, e.g. "Use when migrating to Swift 6.2, resolving data-race compiler errors, or designing MainActor-based apps."

Include natural trigger terms users would say such as "data race", "MainActor", "Swift 6.2 migration", and "Xcode 26 concurrency".

Consider framing the capabilities as verb actions (e.g. "Migrate", "Offload", "Isolate") to strengthen specificity.

DimensionReasoningScore

Specificity

Enumerates three concrete capabilities — "single-threaded by default", "@concurrent for explicit background offloading", "isolated conformances for main actor types" — rather than vague language, matching the multiple-specific-actions anchor.

3 / 3

Completeness

It clearly states what the skill covers but has no "Use when..." clause or equivalent explicit trigger guidance, so per the judging guidelines completeness is capped at 2.

2 / 3

Trigger Term Quality

Includes relevant domain keywords ("Swift 6.2 Approachable Concurrency", "@concurrent", "background offloading") but omits common natural variations a user might say such as "data race", "MainActor", or "migrating to Swift 6.2", so it is not the full-coverage level.

2 / 3

Distinctiveness Conflict Risk

The phrase "Swift 6.2 Approachable Concurrency" names a narrow, version-specific niche with distinct triggers unlikely to collide with other skills.

3 / 3

Total

10

/

12

Passed

Validation

100%

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

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
affaan-m/ECC
Reviewed

Table of Contents

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