swift-concurrency-expert

Swift Concurrency review and remediation for Swift 6.2+. Use when asked to review Swift Concurrency usage, improve concurrency compliance, or fix Swift concurrency compiler errors in a feature or file. Concrete actions include adding Sendable conformance, applying @MainActor annotations, resolving actor isolation warnings, fixing data race diagnostics, and migrating completion handlers to async/await.

Quality

100%

Does it follow best practices?

Impact

—

No eval scenarios have been run

Securityby

Passed

No known issues

Quality

Content

100%

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

This is an excellent skill file that is concise, actionable, and well-structured. The workflow is clear with proper validation and feedback loops, the code examples are executable and cover the most common fix patterns, and deeper reference material is appropriately linked rather than inlined. No significant improvements needed.

Dimension	Reasoning	Score
Conciseness	The content is lean and efficient. It assumes Claude understands Swift concurrency concepts and doesn't waste tokens explaining what actors, Sendable, or async/await are. Every section earns its place with actionable guidance.	3 / 3
Actionability	Provides fully executable Swift code examples for three common scenarios (UI-bound types, protocol conformance isolation, background work). The before/after pattern makes fixes copy-paste ready with clear context on what changed and why.	3 / 3
Workflow Clarity	The three-step workflow (triage → fix → verify) is clearly sequenced with explicit validation checkpoints: rebuild to confirm diagnostics resolved, run tests for regressions, and an iterative feedback loop (return to step 1) if new warnings surface.	3 / 3
Progressive Disclosure	The SKILL.md provides a concise overview and workflow with inline examples, then clearly signals three one-level-deep reference files for deeper material (Swift 6.2 changes, approachable concurrency, SwiftUI-specific guidance). Navigation is straightforward.	3 / 3
	Total	12 / 12 Passed

Description

100%

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

This is an excellent skill description that clearly defines its scope (Swift Concurrency for Swift 6.2+), provides explicit trigger conditions via a 'Use when' clause, and enumerates five specific concrete actions. It uses proper third-person voice throughout and includes highly distinctive technical trigger terms that minimize conflict risk with other skills.

Dimension	Reasoning	Score
Specificity	Lists multiple specific concrete actions: adding Sendable conformance, applying @MainActor annotations, resolving actor isolation warnings, fixing data race diagnostics, and migrating completion handlers to async/await.	3 / 3
Completeness	Clearly answers both 'what' (review and remediation of Swift Concurrency with specific actions listed) and 'when' (explicit 'Use when asked to review Swift Concurrency usage, improve concurrency compliance, or fix Swift concurrency compiler errors').	3 / 3
Trigger Term Quality	Includes strong natural keywords users would say: 'Swift Concurrency', 'Sendable', '@MainActor', 'actor isolation', 'data race', 'async/await', 'completion handlers', 'concurrency compiler errors', 'Swift 6.2+'. These cover a wide range of terms a developer would naturally use.	3 / 3
Distinctiveness Conflict Risk	Highly distinctive niche targeting Swift 6.2+ concurrency specifically. The combination of Swift version, concurrency-specific terminology (Sendable, @MainActor, actor isolation), and the remediation focus makes it very unlikely to conflict with general Swift or other language skills.	3 / 3
	Total	12 / 12 Passed

Validation

100%

Warnings & errors only

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

Validation — 11 / 11 Passed

Validation for skill structure

No warnings or errors.

Repository: Dimillian/Skills
Commit: 05ba982

Reviewed: 3 months ago

Table of Contents

Discovery Implementation Validation

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