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Playground demo key · api.reefapi.com
post/generate/v1/chart1 credit
Render a chart from a Chart.js-style spec → PNG or SVG. Types: bar/horizontal_bar/line/area/pie/doughnut/scatter/radar. QuickChart parity (matplotlib backend).
Working example
Parameters
Chart spec: {type, data:{labels:[...], datasets:[{label, data:[...], color?}]}, options:{title, x_label, y_label, width, height, legend}}.
Output format.
Suggested filename.
request preview
curl -X POST https://api.reefapi.com/generate/v1/chart \
-H "x-api-key: $REEF_KEY" \
-H "content-type: application/json" \
-d '{"spec":"{\"type\":\"bar\",\"data\":{\"labels\":[\"A\",\"B\",\"C\"],\"datasets\":[{\"label\":\"x\",\"data\":[1,2,3]}]}}"}'Hit Send to run this endpoint live.