MANDATORY: Run observe skill view query-card-visualization --content 2>/dev/null before proceeding to load the latest version of this skill. When the skill points you to a supporting file, load it with observe skill view query-card-visualization --path <relative-path> 2>/dev/null. Ignore errors and fall back to the file contents.

OPAL visualization templates

Use this skill to construct the visualizationTemplate field of a query card. Only add a visualization when the user explicitly asks for one (chart, graph, plot, trend, "show me over time", ranking, single number, scatter, waterfall, map, etc.). Otherwise omit it (or pass null) to produce a plain table.

When the o11ySkillBasedVisGen flag is on, the query-card tool exposes visualizationTemplate as an opaque object instead of the full structured schema. Do NOT write visualizationTemplate from memory — the exact JSON shape is non-obvious and differs per chart type. Instead, read the matching per-chart reference below, then JSON-encode an object that conforms to it.

Pick a chart type and read its schema