Conciseness

The body is mostly lean executable code with minimal over-explanation of concepts Claude already knows; only minor padding (e.g. the Best Practices list restating inline patterns) keeps it from the top anchor.

Actionability

Concrete, executable Rust examples cover the common cases (define/emit/handle/chaining/hit-testing), but several helpers and types (get_details, LoginAction, AppStateAction, ModalAction) are referenced without definition, leaving minor gaps.

Workflow Clarity

Each pattern shows a clear sequence (define action, emit from widget, handle in App, chain to parent) and the Best Practices give ordered guidance; no validation checkpoints are needed since the operations are non-destructive pattern application.

Progressive Disclosure

A dedicated 'Reference Files' section clearly signals three one-level-deep references, but the references/ directory and the cited files do not exist, so navigation is broken and the structure falls short of the well-organized anchor.

Specificity

The description names the domain ("Use for Robius event and action patterns") but lists no concrete capability verbs (e.g. define/emit/handle); the rest is a keyword list rather than named actions, matching the 'names domain but actions are minimal' anchor.

Completeness

It has both a 'what' (Robius event and action patterns) and an explicit 'when' ("Triggers on:" list), satisfying the anchor where both are present but the 'what' could be more concrete.

Trigger Term Quality

Good keyword coverage including synonyms and even localized terms ("custom action, widget action, event handling, 事件处理, 自定义动作") plus concrete API names, though a few natural phrasings are absent so it stops short of the comprehensive anchor.

Distinctiveness Conflict Risk

Robius/Makepad-specific triggers (cx.widget_action, MatchEvent, DefaultNone) carve a clear niche with minimal overlap risk against other skills.