Chart Maker

Create bar, line, or pie charts from CSV or JSON data. Returns a PNG image of the rendered chart.

API Endpoint

POST /api/v1/tools/chart-maker

Accepts multipart form data with a CSV or JSON file and a JSON settings field.

Parameters

Parameter	Type	Required	Default	Description
kind	string	No	"bar"	Chart type: bar, line, pie
title	string	No	-	Chart title (max 120 characters)
width	integer	No	960	Chart width in pixels (320--2048)
height	integer	No	540	Chart height in pixels (240--1536)

Example Request

curl -X POST http://localhost:1349/api/v1/tools/chart-maker \
  -H "Authorization: Bearer si_your-api-key" \
  -F "[email protected]" \
  -F 'settings={"kind": "line", "title": "Monthly Sales", "width": 960, "height": 540}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/sales_chart.png",
  "originalSize": 1024,
  "processedSize": 48500
}

Notes

• Input must be a .csv or .json file. CSV files should have a header row with column names.
• The first column is used as the category label; the second column must be numeric and provides the data values. Only two columns are used.
• JSON input should be an array of {label, value} objects, or a plain object whose keys become labels and values become data points.
• Maximum 100 data points. All values must be zero or greater.
• Output is always a PNG image regardless of input format.