Claude · data visualization · free API
Generate charts with Claude
Turn checked numeric data into bar, line, or pie charts without asking Claude to draw an unreliable image or invent a frontend.
Example
{"type":"bar","values":[10,25,15],
"labels":["Jan","Feb","Mar"],"title":"Monthly signups","format":"svg"}Claude can call MCP generate_chart or POST JSON to /api/chart. The response includes a temporary downloadUrl. Inputs support up to 40 numeric values.
Validation
- Confirm labels and values have the same intended order.
- Do not imply causation or statistical significance from presentation alone.
- Use line charts for ordered series, bars for comparison, and pie only for a small complete whole.