charts-output

What problem does it solve?

Chart rendering in Cowork can be error-prone when variants, data keys, or numeric values are mis-specified. This skill provides a definitive reference and data-formatting rules to ensure show_generative_ui charts render consistently.

Core Features & Use Cases

• Establishes allowed chart variants (line, area, bar, pie, donut, scatter, radar, radialBar, treemap, funnel, sankey, composed) and maps their data requirements.
• Defines data formatting rules (numbers only in value fields, period/date keys first, concise key names, null values as gaps).
• Includes example data shapes for common chart types (time-series, category comparisons, multi-series) to guide dashboard design and QA.

Quick Start

Create a simple line chart spec with period as the X key and numeric values to render a basic time-series.