Conciseness

Most content is genuinely environment-specific and earns its tokens (silent render channel, `ol-*` color tokens, component whitelist, no-IIFE rule), but there is unnecessary re-teaching of what Claude already knows: "Complete ECharts option structure including `xAxis`/`yAxis`/`series` etc." and the ECharts chart-type list stated twice ("ECharts chart rendering (line / bar / pie / scatter / radar / heatmap / map)" then "Supports all ECharts chart types: line, bar, pie, scatter, radar, heatmap, treemap..."). The 5-line quoted anti-pattern transcript is also padding that could be compressed to one example line. This fits anchor 3 (mostly efficient but includes some unnecessary explanation or could be tightened), not anchor 4, because the redundant passages are more than minor.

Actionability

Guidance is mostly copy-paste ready: complete executable ECharts JSON examples with parameters, a wrong-vs-correct JSX example, a tool-selection decision tree, and concrete class-token color conventions. The gap that keeps it below anchor 5 is the failure-recovery guidance: "Prefer re-calling JsxCreate with a full corrected content" directly conflicts with "After a failure, fix via `Edit`—do not call JsxCreate again", so the correct action on validation failure is ambiguous. This matches anchor 4 (mostly executable guidance, concrete code with minor gaps).

Workflow Clarity

A clear sequence exists — activate deferred tools via `ToolSearch`, select via the decision tree, render, handle validation failure — but the error-recovery checkpoint is self-contradictory ("Prefer re-calling JsxCreate with a full corrected content... a complete rewrite is less error-prone than a partial Edit" vs. "After a failure, fix via `Edit`—do not call JsxCreate again"), leaving the feedback loop incoherent rather than merely implicit. This matches anchor 3 (steps listed but validation/checkpoint gaps) rather than anchor 4, whose 'most checkpoints present' requires the existing checkpoints to be consistent.

Progressive Disclosure

The skill is a single self-contained file with no bundle directories and no nested references, organized under clear headers with tables (Tool Inventory, decision tree, color tokens, scenario table) — good structure with most content appropriately placed. The minor organization gaps that keep it below anchor 5 are the redundancy between the Decision Tree section and the "When to use ChartRender vs JsxCreate" table, and long inline inventories (the component whitelist) that could live in a reference file if the bundle grew. This fits anchor 4 (good structure; minor organization gaps).

Specificity

Concrete, tool-named actions are present — "this skill must be loaded before (or in the same turn as) the data-fetching tool", "render via JsxCreate or ChartRender" — which is a base fit for anchor 4 (several specific actions, minor gaps such as no mention of chart/card types). However, the second-person phrasing "you must render via JsxCreate or ChartRender" violates the third-person-voice rule, reducing the score by 1 to 3, matching anchor 3 (names domain and 1-2 concrete actions, not comprehensive).

Completeness

Both questions are explicitly answered: what — "render via JsxCreate or ChartRender", i.e. visualized output instead of "plain markdown text"; when — the explicit trigger list, the "3+ structurable items" condition, and four concrete example trigger phrases. This matches anchor 5 (clearly and explicitly answers both what AND when with concrete trigger phrases); anchor 4 would require the 'when' to be less explicit or specific, which is not the case.

Trigger Term Quality

The description lists a comprehensive set of natural trigger terms with synonyms — "news/briefings/market updates/rankings/reports/summaries/analyses/comparisons/selection/recommendations/roundups/retrospectives" and "3+ structurable items" — plus concrete example prompts users would actually say: "search the latest news about Iran", "compare Obsidian/Notion/Logseq", "recommend a few books", "how is the stock market recently". This matches anchor 5 (comprehensive coverage of natural terms including synonyms); it is not anchor 4, which requires a few natural terms to be missing.

Distinctiveness Conflict Risk

The explicit exclusion clause "**Not for**: single-fact Q&A, pure code output, adding/removing nodes inside the canvas (handled by the canvas sub-agent)" gives a clear niche with minimal overlap for those cases, but the very broad triggers "reports/summaries/analyses" would also fire for any plain summarization or report-writing request, creating minor overlap risk with closely related skills. This fits anchor 4 (mostly distinct; minor overlap risk) rather than anchor 5, which requires minimal conflict risk across the board.