Deterministic, paid-per-render SVG bar chart generator for LLM agents
Deterministic, paid-per-render SVG bar chart generator for LLM agents. Accepts labeled scalar data and layout options, performs exact geometry math (min/max normalization, nice-interval y-axis ticks, label spacing, bar-width distribution), and returns schema-valid, escape-correct SVG with identical input always yielding byte-identical output.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
263 msmedian answer time
$0.015listed price per call
$0.015price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://svg-bar-chart-renderer.jannioura.workers.dev/
| Category | Everything else |
|---|---|
| Provider host | svg-bar-chart-renderer.jannioura.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 6 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.015 | 263 ms |
Example input (from the provider)
{
"body": {
"data": [
{
"label": "Q1",
"value": 12
},
{
"label": "Q2",
"value": 19
},
{
"label": "Q3",
"value": 7
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"data": {
"items": {
"properties": {
"label": {
"type": "string"
},
"value": {
"type": "number"
}
},
"required": [
"label",
"value"
],
"type": "object"
},
"maxItems": 500,
"minItems": 1,
"type": "array"
},
"options": {
"properties": {
"fill": {
"default": "#4f46e5",
"pattern": "^#[0-9a-fA-F]{6}$",
"type": "string"
},
"height": {
"default": 400,
"maximum": 4000,
"minimum": 100,
"type": "integer"
},
"showGrid": {
"default": true,
"type": "boolean"
},
"theme": {
"default": "light",
"enum": [
"light",
"dark"
],
"type": "string"
},
"title": {
"default": "",
"type": "string"
},
"width": {
"default": 640,
"maximum": 4000,
"minimum": 100,
"type": "integer"
},
"yAxisLabel": {
"default": "",
"type": "string"
}
},
"type": "object"
}
},
"required": [
"data"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"byteLength": {
"description": "UTF-8 byte length of the svg string.",
"type": "integer"
},
"pointCount": {
"type": "integer"
},
"svg": {
"description": "Complete, well-formed SVG document.",
"type": "string"
},
"yAxis": {
"properties": {
"max": {
"type": "number"
},
"min": {
"type": "number"
},
"ticks": {
"items": {
"type": "number"
},
"type": "array"
}
},
"required": [
"min",
"max",
"ticks"
],
"type": "object"
}
},
"required": [
"svg",
"byteLength",
"yAxis",
"pointCount"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}