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First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com

Answer 67 · Act 127 · Transact 10 · Score: Not yet scored

Tool inspector

showChart

act imperative

Show a bar, line, pie, sankey, scatter, radar, or waterfall chart in the chat — use this instead of describing numbers in text whenever there's a set of comparable values (a price estimate's low/average/high range, a trend over time, a breakdown by category), a flow between stages (budget allocation, funnel drop-off, traffic sources into outcomes), a correlation between two numeric variables (price vs. rating, square footage vs. cost), a multi-dimensional profile of one or more things (a flavor/nutrition profile across taste axes, a candidate's skills across competencies), or a sequence of gains/losses building from a starting value to an ending one (a budget walk, a P&L bridge, a score building up from a baseline). Provide data as [{label, value}] for a single series (e.g. [{"label":"Low End","value":320},{"label":"Average","value":480},{"label":"High End","value":650}]), or [{label, values:{seriesName: number, ...}}] for multiple series on the same bar/line/radar chart (e.g. comparing two products' prices over the same months, or two candidates' skill profiles over the same axes) — 'pie' only supports single-series data. For 'radar', `data` follows the exact same shape as bar/line, but each item is one AXIS of the profile rather than a category — e.g. data:[{"label":"Sweet","value":4},{"label":"Salt","value":6},{"label":"Umami","value":3}] for a single subject, or add `values:{seriesName:number}` per axis to overlay 2-3 subjects on the same chart for direct comparison (e.g. two recipes' flavor profiles). Works best with 4-8 axes on a consistent scale (e.g. all 0-10) — fewer collapses the shape, and a wildly inconsistent scale across axes (one 0-10, another 0-1000) distorts the polygon meaninglessly. Not for more than ~3 overlaid series — the polygons start overlapping illegibly past that; use showComparisonMatrix instead for ranking many options across many criteria. If you already scored options on shared dimensions via showComparisonMatrix earlier in this conve…

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Input schema

Property	Type	Required	Description
`title`	string	no	The subject being charted — set this whenever there's an obvious one, not just when explicitly asked.
`type`	string	no	—
`unit`	string	no	—
`xLabel`	string	no	Scatter only: name of the x-axis.
`yLabel`	string	no	Scatter only: name of the y-axis.
`fitCurve`	boolean	no	Scatter only, single series: automatically fit and overlay the best-fitting regression curve with a 95% confidence band.
`data`	array	yes	—
`links`	array	no	Sankey only: [{source, target, value}] with source/target as 0-based indexes into `data`.

Raw JSON schema

{
  "type": "object",
  "properties": {
    "title": {
      "type": "string",
      "description": "The subject being charted — set this whenever there's an obvious one, not just when explicitly asked."
    },
    "type": {
      "type": "string",
      "enum": [
        "bar",
        "line",
        "pie",
        "sankey",
        "scatter",
        "radar",
        "waterfall"
      ]
    },
    "unit": {
      "type": "string"
    },
    "xLabel": {
      "type": "string",
      "description": "Scatter only: name of the x-axis."
    },
    "yLabel": {
      "type": "string",
      "description": "Scatter only: name of the y-axis."
    },
    "fitCurve": {
      "type": "boolean",
      "description": "Scatter only, single series: automatically fit and overlay the best-fitting regression curve with a 95% confidence band."
    },
    "data": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "label": {
            "type": "string"
          },
          "value": {
            "type": "number"
          },
          "values": {
            "type": "object"
          },
          "x": {
            "type": "number",
            "description": "Scatter only."
          },
          "y": {
            "type": "number",
            "description": "Scatter only."
          },
          "z": {
            "type": "number",
            "description": "Scatter only: optional bubble size."
          },
          "series": {
            "type": "string",
            "description": "Scatter only: optional group name for coloring/legend."
          },
          "delta": {
            "type": "number",
            "description": "Waterfall only: the +/- change this step represents."
          },
          "isTotal": {
            "type": "boolean",
            "description": "Waterfall only: show this as a solid checkpoint bar (the running total so far) instead of a floating delta. Omit delta when set."
          }
        }
      }
    },
    "links": {
      "type": "array",
      "description": "Sankey only: [{source, target, value}] with source/target as 0-based indexes into `data`.",
      "items": {
        "type": "object",
        "properties": {
          "source": {
            "type": "number"
          },
          "target": {
            "type": "number"
          },
          "value": {
            "type": "number"
          }
        },
        "required": [
          "source",
          "target",
          "value"
        ]
      }
    }
  },
  "required": [
    "data"
  ]
}