Conciseness

The body is lean and table-driven with zero concept explanations: every line is a decision rule, an exact API pointer, or a reference. The one explanatory sentence — 'Inline px.bar(data_frame="raw"...) on detail-level data stacks individual rows as separate rectangles instead of summing' — encodes non-obvious Vizro-specific failure behavior, not knowledge Claude already has, matching the 'every token earns its place' anchor.

Actionability

Guidance names exact APIs and argument conventions: 'kpi_card / kpi_card_reference from vizro.figures', 'vm.Table with figure=dash_ag_grid(data_frame=...)', '@capture("graph")', 'data_frame as the exact DataFrame argument name (not df, not data)', and 'from vizro.themes import palettes, colors'. It stops short of the score-5 anchor because the body contains no copy-paste-ready code example (e.g., a full @capture("graph") function or a Figure model YAML snippet) — those live in the reference file.

Workflow Clarity

The skill is a decision-rules reference rather than a sequential workflow, and per-scenario routing is unambiguous: a data-question→chart table, explicit 'Use when' criteria for custom charts, and hard Never rules for KPI cards and tables. No destructive or batch operations require validation checkpoints, but the multi-topic structure has no overarching flow connecting selection through implementation, placing it between the clear-sequence anchor and the simple-skill exception.

Progressive Disclosure

The body is a concise overview with one-level-deep, well-signaled references: 'See chart-best-practices.md for palette names and import patterns' plus a Deep Dive section enumerating exactly what the reference covers ('extended chart type decision tree, Plotly Express formatting conventions... accessibility rules, or detailed @capture("graph") guidance'), and the referenced file exists in the bundle. The cross-skill pointer to ../dashboard-build/references/examples/example_ag_grid.py is clearly labeled but not verifiable within this bundle — a negligible organization note against an otherwise exemplary split.

Specificity

The description lists multiple concrete actions — 'choosing chart types, applying Plotly Express conventions, configuring colors, building KPI cards, or adding tables (AG Grid)' — which comprehensively mirror the skill's actual scope. No vague or padded language is present, so it matches the 'lists multiple specific concrete actions; comprehensive coverage' anchor rather than the score-4 anchor with coverage gaps.

Completeness

Both halves are explicit: the 'what' ('choosing chart types... building KPI cards... adding tables (AG Grid) to Vizro dashboards') and the 'when' ('Activate when the user asks which chart fits their data, needs custom chart functions, wants to set colors or palettes, is creating KPI metric cards, or needs a tabular detail view'). This matches the anchor 'clearly and explicitly answers both what AND when with concrete trigger phrases'.

Trigger Term Quality

Natural trigger phrases are strong — 'which chart fits their data', 'custom chart functions', 'set colors or palettes', 'KPI metric cards', 'tabular detail view', plus domain anchors like 'Vizro dashboards', 'AG Grid', 'Plotly Express'. It falls short of the score-5 anchor because common synonyms users would say — 'graph', 'plot', 'visualize', 'make a dashboard' — are absent, while coverage is clearly above the 'some relevant keywords' midpoint.

Distinctiveness Conflict Risk

The description stakes out a clear niche via 'to Vizro dashboards', 'AG Grid', 'KPI cards', and 'Plotly Express', so it is unlikely to trigger for a generic charting or document skill. Minor overlap with a hypothetical general chart-selection skill exists, but the explicit Vizro qualifiers keep conflict risk minimal, matching the 'clear niche with distinct triggers' anchor.