▣ IMAGE PROCESSING · SMART GENERATION

Generate Radar Chart API

Hosted on ApyHub

What it does

Radar Chart Generator turns a title, axis labels, and one or more series into a radar chart image or a shareable chart link. Send the chart data in the request body and choose light or dark theme, optional width and height, and an optional max_value.

Use it when you need to visualize comparative scores across several dimensions: team performance, product benchmarking, feature coverage, or survey results. Each series needs a name and values, and you can add a hex color for each series to control how it appears on the chart. The chart title and labels define the output, so the structure stays predictable for dashboards and reporting pipelines.

The service exposes two outputs. POST /download returns a binary chart image for direct download. POST /link returns a pre-signed URL in a data field, which is useful when you want to store, embed, or hand off the generated image without streaming it immediately.

If you're building internal analytics, customer reports, or comparison views, Radar Chart Generator gives you a consistent way to render the same chart data as either an image file or a hosted link.

▣ ENDPOINT 01 / 02

POST

Generate radar chart image

http://localhost:8080/apyhub/generate-simple-radar-chart/download

QUICKSTARTGUIDE

Quickstart

Create a simple radar chart image from a title, labels, and one data series.

curl -X POST "http://localhost:8080/apyhub/generate-simple-radar-chart/download" \
  -H "apy-token: $APY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Team Performance Scores",
    "labels": ["Speed", "Quality", "Communication"],
    "series": [
      {
        "name": "Team A",
        "values": [8, 7, 9]
      }
    ]
  }'

What you'll get back

Returns a binary file response containing the generated radar chart image.

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API key

Loading your default key…

The full key is used to call the gateway and stays in this tab — never sent to orbit or saved.

About this endpoint

What it does

Generates a radar chart image from the chart configuration in the request body and returns the rendered image as binary output.

Request Body

Parameter	Type	Mandatory	Description
theme	ENUM	No	Chart theme. Allowed values: `light`, `dark`. Default: `light`.
title	String	Yes	Chart title.
labels	String Array	Yes	Axis labels for the radar chart. Minimum items: 3.
series	Object Array	Yes	One or more data series to plot. Each series item includes `name` and `values`; `color` is optional.
series[].name	String	Yes	Series name.
series[].color	String	No	6-character hex color without the leading `#` symbol. Pattern: `^[A-Fa-f0-9]{6}$`.
series[].values	Number Array	Yes	Numeric values for the series. Minimum items: 3.
options	Object	No	Chart sizing and scale options. Additional properties are not allowed.
options.width	Integer	No	Chart width in pixels. Minimum: 1.
options.height	Integer	No	Chart height in pixels. Minimum: 1.
options.max_value	Number	No	Maximum value used for the chart scale. Minimum: 1.

Response

Returns a binary image response. The output schema is a string with binary format, so the success payload is the generated chart file rather than a JSON object.

Query parameters

Name

Type

Description

outputOPTIONAL

string

—

Body

Name

Type

Description

bodyREQUIRED

object

—

▣ ENDPOINT 02 / 02

POST

Generate radar chart link

http://localhost:8080/apyhub/generate-simple-radar-chart/link

QUICKSTARTGUIDE

Quickstart

Generate a simple radar chart from a title, labels, and one or more series.

curl -X POST "http://localhost:8080/apyhub/generate-simple-radar-chart/link" \
  -H "apy-token: $APY_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "title": "Team Performance Scores",
    "labels": ["Speed", "Quality", "Communication", "Reliability", "Ownership"],
    "series": [
      {
        "name": "Team A",
        "color": "3B82F6",
        "values": [8, 7, 9, 8, 7]
      }
    ]
  }'

What you'll get back

Returns a JSON object with a data string field — a pre-signed URL pointing to the generated chart image.

{
  "data": "https://apyhub-outgoing.s3.eu-west-1.amazonaws.com/mono-go/chart_generator/general/chart_generator_2026-08-07_85427a07.svg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIARJOHWS6LWTUUGYPI%2F20260807%2Feu-west-1%2Fs3%2Faws4_request&X-Amz-Date=20260807T132324Z&X-Amz-Expires=900&X-Amz-SignedHeaders=host&response-content-disposition=inline&response-content-type=image%2Fsvg%2Bxml&X-Amz-Signature=859b3a9eff85be2ea7146d8d7322a54da62c21ef4b1b2d7edc8355235d7a9f52"
}

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API key

Loading your default key…

The full key is used to call the gateway and stays in this tab — never sent to orbit or saved.

About this endpoint

What it does

Generates a radar chart link from the chart configuration in the request body. The endpoint returns a JSON object containing a pre-signed URL for the generated chart image in data.

Request Body

Parameter	Type	Mandatory	Description
theme	ENUM	No	Chart theme. Allowed values: `light`, `dark`. Default: `light`.
title	String	Yes	Chart title.
labels	String Array	Yes	Axis labels for the radar chart. Minimum items: 3.
series	Object Array	Yes	One or more series to plot. Each series object must include `name` and `values`; `color` is optional.
series[].name	String	Yes	Series name.
series[].color	String	No	6-character hex color without the leading `#` symbol. Pattern: `^[A-Fa-f0-9]{6}$`.
series[].values	Number Array	Yes	Numeric values for the series. Minimum items: 3.
options	Object	No	Chart sizing and scale options.
options.width	Integer	No	Chart width in pixels. Minimum: 1.
options.height	Integer	No	Chart height in pixels. Minimum: 1.
options.max_value	Number	No	Maximum radar scale value. Minimum: 1.

Response

Returns a JSON object with a required data string field formatted as a URI. The data value is a pre-signed URL for the generated chart image.

Parameter	Type	Mandatory	Description
data	String	Yes	Pre-signed URL for the generated chart image.

Query parameters

Name

Type

Description

outputOPTIONAL

string

—

Body

Name

Type

Description

bodyREQUIRED

object

—

▣ COMMON ERRORS

Errors any endpoint can return

400bad_request

Required parameter missing or malformed body.

401unauthorized

API key missing, revoked, or not authorized for this service.

429rate_limited

Your plan's per-second rate exceeded. Retry with exponential backoff.

503upstream_busy

Backend temporarily unavailable. Try again in a few seconds.