swift-actor-persistence

Thread-safe data persistence in Swift using actors — in-memory cache with file-backed storage, eliminating data races by design. Use when persisting data in Swift and a data race or thread-safety problem needs designing out.

Quality

81%

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Securityby

Passed

No findings from the security scan

Quality

Content

76%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.

An actionable, well-structured code-pattern skill with complete executable Swift, weakened mainly by a lack of validation/verification feedback for its destructive file operations and some duplicated When-to sections.

Suggestions

Add a validation/verification checkpoint for destructive writes — e.g., after save/delete, verify the file decoded correctly or report a write failure feedback loop — to lift workflow_clarity above 3.

Merge the overlapping 'When to Activate' and 'When to Use' sections into a single trigger list to remove redundancy and tighten the token budget.

Drop the introductory paragraph that restates the frontmatter description, since the body heading already conveys the same intent.

Dimension	Reasoning	Score
Conciseness	Mostly lean and efficient with code comments that earn their place ('// Synchronous load during init (actor isolation not yet active)'), but the 'When to Activate' and 'When to Use' sections substantially duplicate each other and the intro repeats the description — minor trim opportunities keep it below anchor 5.	4 / 5
Actionability	Fully executable, copy-paste-ready generic actor implementation covering save/delete/find/loadAll plus a @Observable ViewModel integration and concrete usage examples that cover the common cases.	5 / 5
Workflow Clarity	The CRUD sequence (init → cache → persist) is present, but save/delete destructively modify file-backed storage with no validation or verification checkpoint and no error-recovery feedback loop; the destructive-operation cap applies and holds this at anchor 3.	3 / 5
Progressive Disclosure	Well-organized with clear section headers, a design-decision table, and appropriately placed inline code; no external references are needed for this single-file skill, though the duplicate When-to sections and absence of any file split leave minor organization gaps below anchor 5.	4 / 5
	Total	16 / 20 Passed

Description

87%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.

A strong, specific description with an explicit 'Use when' clause and concrete trigger phrases tied to a clear niche. Slight headroom remains on specificity and trigger-term synonym coverage.

Dimension	Reasoning	Score
Specificity	Names the domain and several concrete elements ('in-memory cache with file-backed storage', 'eliminating data races by design', 'using actors'), but it is really one capability (persistence) with architecture detail rather than a list of multiple distinct actions, so it falls below the comprehensive-coverage anchor 5.	4 / 5
Completeness	It explicitly answers what it does ('Thread-safe data persistence in Swift using actors — in-memory cache with file-backed storage, eliminating data races by design') and when to use it ('Use when persisting data in Swift and a data race or thread-safety problem needs designing out') with concrete trigger phrases.	5 / 5
Trigger Term Quality	'persisting data in Swift', 'data race', and 'thread-safety' are natural phrases a developer would say; missing common synonyms such as 'concurrency', 'async', or 'thread-safe', keeping it just short of comprehensive.	4 / 5
Distinctiveness Conflict Risk	The Swift + actors + data-race niche is narrow with distinct triggers and minimal overlap risk with other skills, written in third person.	5 / 5
	Total	18 / 20 Passed

Validation

93%

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 — 15 / 16 Passed

Validation for skill structure

Criteria	Description	Result
metadata_version	'metadata.version' is missing	Warning

	Total	15 / 16 Passed

Repository: affaan-m/ECC
Path: skills/swift-actor-persistence/SKILL.md
Commit: d8409a4

Reviewed: 1 day ago

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