Conciseness

Content is mostly tool-specific knowledge Claude cannot know (atomicity, wrapper semantics, font-preload-before-appendChild), but the same rules are restated repeatedly: return-IDs appears in Critical Rule 15, Section 3, and workflow step 4; setCurrentPageAsync appears in Rule 9 and twice within Section 2; the Pre-Flight Checklist (Section 8) restates rules 1-17 nearly verbatim. Not 4: the repetition goes beyond "minor instances that could be trimmed" — consolidating the duplicated rule statements would cut a meaningful fraction of the file.

Actionability

Fully executable throughout: copy-paste-ready JS for page iteration, query/set/auto-layout/screenshot APIs, inspection scripts, a selector-syntax spec, and an error-message→likely-cause→fix table. Not 4: examples cover the common cases with exact, runnable code and concrete fix steps, leaving no gaps.

Workflow Clarity

Section 6 gives a clear sequenced workflow (inspect → skeleton → fill → validate → fix) with a per-step validation table, an explicit step order for complex tasks, and Section 7 adds a full feedback loop (stop → read error → fix → retry) plus atomicity guarantees. The pre-flight checklist covers batch/mutating operations. Not 4: validation checkpoints are explicit at every step, not just most.

Progressive Disclosure

Good structure: all referenced files (gotchas.md, common-patterns.md, the pattern docs, plugin-api-standalone.index.md/.d.ts, working-with-design-systems/wwds.md) verified to exist, one level deep, with a when-to-load table (Section 10) and explicit "grep, don't load" guidance for the 455KB d.ts. Not 5: Section 5's selector grammar and QueryResult method table are reference-grade API surface inlined in SKILL.md rather than split into a reference file, making the overview heavier than ideal.

Specificity

Lists multiple specific concrete actions — "create/edit/delete nodes, set up variables or tokens, build components and variants, modify auto-layout or fills, bind variables to properties, or inspect file structure programmatically" — covering the write/unique-read surface comprehensively. Not 4: there are no minor gaps in coverage of the tool's action space; the enumerated list is broad and concrete.

Completeness

Has both a "what" (JavaScript execution in the Figma file context for write/unique-read actions) and an explicit "when" ("Trigger whenever the user wants to perform a write action..."). Not 5: the "what" is stated only obliquely — the skill's actual function (running Plugin API code via use_figma) is described from the user's task angle and wrapped in mandate language ("MANDATORY prerequisite... you MUST invoke") rather than stated as a capability.

Trigger Term Quality

Good coverage of natural terms (Figma file context, nodes, variables or tokens, components and variants, auto-layout, fills, bind variables), but common user phrasings like "edit my Figma design", "styles", or "prototype" are absent. Not 3: the included terms are exactly what users requesting Figma manipulation would say, not generic.

Distinctiveness Conflict Risk

Clear niche — Figma file manipulation via JavaScript execution in the use_figma context — with distinct, specific triggers. Not 5: write-action triggers like "build components and variants" or "modify auto-layout or fills" overlap with closely related companion skills (figma-generate-design for screen building, figma-use-slides), so minor overlap risk remains.