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Chart Splat Chart Rendering API
x402
Chart Splat Chart Rendering API is a paid API for AI agents from api.chartsplat.com, paid per call via x402, $0.005/call, status healthy (last checked 2026-10-13, last successful call 2026-10-09).
Renders a Chart.js configuration object (type, data, options) into a PNG image, supporting bar, line, pie, doughnut, radar, polar area, and candlestick/OHLC chart types.
Price / call$0.005
Success50%
StatusHealthy
How this service works
A Chart.js-compatible charting API: POST a standard Chart.js `{ type, data, options }` — the same object you would hand to `new Chart()` — and get back a rendered PNG. Supports bar, line, pie, doughnut, radar, polar area, and candlestick/OHLC charts with the full set of Chart.js options. Pay per chart with x402 (USDC on Base) or use a Chart Splat API key — ideal for charts in agent reports, dashboards, and chat messages.
Output
A rendered PNG image of the specified chart, produced server-side from the supplied Chart.js type, data, and options. The agent receives binary PNG data suitable for embedding in reports, messages, or dashboards.
Example use cases
Example prompt
“Generate a bar chart PNG showing monthly sales figures — labels January through June, with values 12000, 15000, 9000, 18000, 21000, and 17000 — give it the title 'H1 Sales' and make it 800 by 400 pixels.”
Technical details
Endpoint
POSThttps://api.chartsplat.com/chart?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to produce a chart image (PNG) from structured data within an agent workflow, report, or chat message — especially when you already have a Chart.js-compatible data structure or need candlestick/OHLC financial charts. Prefer it over generic image generation services because it accepts structured Chart.js configs directly and supports financial chart types like candlestick and OHLC natively.
Side effects
- Invalid or unsupported chart type returns a 400 error
- Malformed datasets array (missing required fields) causes a rendering error
- OHLC/candlestick datasets missing x/o/h/l/c fields fail to render
- Payment not provided or insufficient USDC balance returns a 402 Payment Required
- Excessively large datasets or complex options may cause timeout or oversized response
- Missing required 'datasets' field in data object returns validation error
Input
{
"data": {
"labels": [
"January",
"February",
"March",
"April",
"May",
"June"
],
"datasets": [
{
"data": [
12000,
15000,
9000,
18000,
21000,
17000
],
"label": "H1 Sales",
"borderColor": "rgba(75, 192, 192, 1)",
"borderWidth": 1,
"backgroundColor": "rgba(75, 192, 192, 0.8)"
}
]
},
"type": "bar",
"options": {
"title": {
"text": "H1 Sales",
"display": true
},
"width": 800,
"height": 400,
"responsive": false
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | object | Chart.js `data` object: `labels` plus one or more `datasets` (each `{ label, data, ...styling }`). |
| type | string | Chart.js chart type. `candlestick`/`ohlc` are financial charts whose datasets take OHLC points (`{ x, o, h, l, c }`). |
| options | object | Optional Chart.js `options` (title, legend, scales, colors, width, height, …). |
Output
{
"_truncated": true,
"_originalSize": 19962
}Tags
x402
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