MCP ASCII Charts

MIT License

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create_sparkline

Generate compact ASCII sparklines for numeric data, ideal for inline terminal visualizations. Customize width, add titles, and apply ANSI colors to highlight trends or metrics directly in text-based environments.

Instructions

Generate compact ASCII sparklines for inline charts

Input Schema

Name	Required	Description
`color`	No	ANSI color name
`data`	Yes	Array of numeric values to plot
`title`	No	Optional sparkline title
`width`	No	Sparkline width (10-100, default: 40)

Input Schema (JSON Schema)

{
  "examples": {
    "compact": {
      "data": [
        1,
        3,
        2,
        5,
        4,
        7,
        6,
        8
      ],
      "title": "Quick Trend"
    },
    "inline": {
      "data": [
        100,
        102,
        98,
        105,
        110,
        108,
        112
      ],
      "width": 25
    },
    "metrics": {
      "color": "red",
      "data": [
        23,
        25,
        22,
        28,
        30,
        27,
        31,
        29,
        33
      ],
      "title": "System Load",
      "width": 30
    }
  },
  "properties": {
    "color": {
      "description": "ANSI color name",
      "optional": true,
      "type": "string"
    },
    "data": {
      "description": "Array of numeric values to plot",
      "items": {
        "type": "number"
      },
      "type": "array"
    },
    "title": {
      "description": "Optional sparkline title",
      "optional": true,
      "type": "string"
    },
    "width": {
      "description": "Sparkline width (10-100, default: 40)",
      "maximum": 100,
      "minimum": 10,
      "optional": true,
      "type": "number"
    }
  },
  "required": [
    "data"
  ],
  "type": "object"
}

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