Content
77%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
The body is highly actionable and gives clear pattern-selection guidance, but it is somewhat long and redundant across overlapping union-composition patterns, and it keeps all detail inline in one large file rather than progressively disclosing it into separate reference files. Tightening the overlap and splitting long reference material would lift the weaker dimensions.
Suggestions
Collapse the three overlapping union patterns (.merge().or() chaining, spread-key, type.or() static) into a single comparison table or pick one recommended form, removing the redundant 'Why this pattern' and 'Why derive from constants' benefit tables that restate the same points.
Move the long detailed sections (e.g. 'type.enumerated()' and the Merge Behavior / Discriminant Detection reference material) into a bundled reference file under references/ and link to it from a concise overview, so the SKILL.md body progressively discloses rather than inlining everything.
Trim the prose between code blocks where the GOOD/BAD examples already make the point (e.g. the repeated explanation of why 'key?' beats 'string | undefined'), trusting the annotated examples to carry the guidance.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The body is information-dense about arktype-specific semantics and assumes TypeScript competence, but it covers three overlapping union patterns (.merge().or() chaining, spread-key, type.or() static) plus redundant 'Why this pattern'/'Why derive from constants' tables that restate benefits, so it could be tightened rather than being fully lean (score 3). | 2 / 3 |
Actionability | Multiple complete, executable TypeScript snippets with explicit GOOD/BAD contrasts (e.g. the type()-wrap and 'key?' optional sections) are copy-paste ready, matching the fully-executable anchor; not score 2 because the examples are real code, not pseudocode. | 3 / 3 |
Workflow Clarity | Each pattern carries explicit 'Use when...' / 'Good for 2-3 variants' / 'For 4+ variants, prefer...' selection guidance, giving an unambiguous decision flow for a pattern-reference skill with no destructive or batch operations requiring validation checkpoints. | 3 / 3 |
Progressive Disclosure | Sections are well-organized, but the skill is a single ~360-line monolithic file with no bundle files; the trailing References point to external repo paths and a GitHub URL rather than one-level-deep skill-internal reference files, so content that could be split out stays inline (score 2, not 3). | 2 / 3 |
Total | 10 / 12 Passed |