Visualization Ops Skill

Visualization Rendering

Tool Inventory

Loading: both are deferred tools. Before calling, activate their schemas via ToolSearch(names: "JsxCreate,ChartRender").

Silent Rendering Channel (read before acting)

Think of your output as two parallel channels:

• text channel: the markdown you write, inserted inline into the conversation in order
• render channel: the output of JsxCreate / ChartRender appears as standalone bubbles directly shown to the user in chat

The user sees both channels at once. So just like a person who finishes writing a letter doesn't add "I just finished writing the letter"—do not pre-announce before calling these tools ("let me organize the data first / I'll create a line chart / now let me make another summary card"), and do not summarize afterward ("chart rendered / card generated"). The user already saw it; those words are just noise.

Correspondingly, your step-level text should in most cases be empty, until after the final tool call, when you write a single concluding passage of text—and only in one of the following situations:

• Genuine data interpretation that needs to be added: conclusions, anomalies, trend implications, next-step recommendations
• Context the user needs that isn't visible inside the bubble: data source, coverage, confidence level, timeliness

If none of those apply, writing no text at all is perfectly fine—the tool bubbles themselves are the answer.

Anti-pattern (an actual play-by-play from a real session, to be avoided):

step 2: "The search results returned some stock market information, but mostly landing pages of market centers, missing concrete stock data. Let me search for something more specific…" step 3: "Good, now I have some concrete stock market data. Let me organize the past week's stock data…" step 4: "Now I've loaded ChartRender and JsxCreate. Let me create a line chart…" step 5: "Chart rendered. Now let me use JsxCreate to make a summary card…" step 6: "Done. I used ChartRender to render … and used JsxCreate to create …"

All 5 of those text passages should be deleted, keeping only the final genuine interpretation like "Looking at the data, the A-share market has oscillated upward over the past week…".

Decision Tree

Needs visualized output
├── Data chart (line/bar/pie/scatter/radar/heatmap/map)?
│   └── ChartRender (ECharts option)
├── Custom card/panel/layout/status display/information summary?
│   └── JsxCreate (JSX component)
└── Unsure?
    ├── Has numeric trends/comparisons/distributions → ChartRender
    └── Other structured information display → JsxCreate

ChartRender — ECharts Chart Rendering

Submit an ECharts option to render a chart inside the message. The frontend uses the ECharts library and supports all ECharts chart types.

Parameters:

• option (required): complete ECharts option object or a JSON string
• title (optional): chart title
• height (optional): chart height (pixels)

Key points for writing an ECharts option:

• Complete ECharts option structure including xAxis/yAxis/series etc.
• Supports all ECharts chart types: line, bar, pie, scatter, radar, heatmap, treemap, sunburst, sankey, gauge, etc.
• Setting tooltip and legend is recommended for readability
• The color scheme automatically adapts to light/dark themes

Examples:

Bar chart:

{
  "option": {
    "xAxis": { "type": "category", "data": ["Mon", "Tue", "Wed", "Thu", "Fri"] },
    "yAxis": { "type": "value" },
    "series": [{ "type": "bar", "data": [120, 200, 150, 80, 70] }],
    "tooltip": { "trigger": "axis" }
  },
  "title": "Weekly Data"
}

Pie chart:

{
  "option": {
    "series": [{
      "type": "pie",
      "radius": "60%",
      "data": [
        { "value": 335, "name": "Direct" },
        { "value": 234, "name": "Email" },
        { "value": 154, "name": "Search" }
      ]
    }],
    "tooltip": { "trigger": "item" },
    "legend": { "orient": "vertical", "left": "left" }
  }
}

JsxCreate — JSX Component Rendering

Renders JSX components live inside the chat interface. Suitable for displaying custom cards, status panels, information summaries, and other structured content.

Parameters:

• content (required): JSX string

Core rules:

1. Write only a JSX fragment, the top level must be one or more element nodes. Do not write import/export/const/let/function/function definitions.
2. No IIFE: do not wrap everything in an immediately-invoked function like {() => { ... return (...) }()} or {(function(){...})()}—the validator will reject it. This is the single most common anti-pattern from models such as MiniMax.
3. Construct data with inline expressions: {[{name:'A'},{name:'B'}].map(x => <div key={x.name}>{x.name}</div>)}
4. {} expressions, map, conditional rendering, and style={{...}} are allowed
5. The {...props} spread syntax is not supported
6. Call JsxCreate only once per reply

Wrong vs. correct example:

// ❌ Wrong: top level is a function, validation fails
{() => {
  const items = [{title: 'A'}, {title: 'B'}]
  return <div>{items.map(i => <p>{i.title}</p>)}</div>
}()}

// ✅ Correct: top level is an element, data expressed inline
<div className="flex flex-col gap-2 p-3">
  {[{title: 'A'}, {title: 'B'}].map((item, i) => (
    <div key={i} className="rounded-lg bg-card p-2 text-sm">{item.title}</div>
  ))}
</div>

After validation fails: the tool returns an absolute path and the error reason. Prefer re-calling JsxCreate with a full corrected content (a complete rewrite is less error-prone than a partial Edit). Only use Edit on that absolute path when the issue is clearly an isolated character-level problem. Do not Glob/Read to look for the file—the absolute path is already in the error message.

Color scheme conventions:

OpenLoaf uses an Apple-style flat palette. All colors are routed through semantic tokens that adapt to light/dark themes. Writing bg-white or text-gray-800 directly will turn into a harsh white block or invisible text in dark mode—so only use semantic tokens:

Base colors: bg-card, bg-muted, text-foreground, text-muted-foreground

Semantic accent colors (low-opacity background + flat text, legible in both themes):

• Blue / Info: bg-ol-blue/10 text-ol-blue
• Green / Success: bg-ol-green/10 text-ol-green
• Amber / Warning: bg-ol-amber/10 text-ol-amber
• Red / Error: bg-ol-red/10 text-ol-red
• Purple / Special: bg-ol-purple/10 text-ol-purple

Tags / badges: rounded-full px-2.5 py-0.5 text-xs combined with the flat colors above.

Do not use gradients (bg-gradient-*), shadows (shadow-*), or outer borders (border/ring)—JSX components are embedded inside the chat message stream, and such decorations make the card look like a standalone popup rather than part of the message, breaking reading flow.

Style conventions:

• Rounded corners rounded-lg/rounded-xl, tight spacing (p-3p-4, gap-2gap-3)
• Prefer small font sizes text-sm/text-xs and wide horizontal layouts—chat window width is limited, and overly tall content forces the user to scroll for a long time.

Allowed component whitelist (case-sensitive): Message, MessageContent, Panel, Snippet, SnippetAddon, SnippetText, SnippetInput, SnippetCopyButton, CodeBlock, Checkpoint, Task, TaskTrigger, TaskContent, TaskItem, TaskItemFile, Image, Attachments, Attachment, AudioPlayer, AudioPlayerElement, AudioPlayerControlBar, AudioPlayerPlayButton, AudioPlayerSeekBackwardButton, AudioPlayerSeekForwardButton, AudioPlayerTimeDisplay, AudioPlayerTimeRange, AudioPlayerDurationDisplay, AudioPlayerMuteButton, AudioPlayerVolumeRange, WebPreview, WebPreviewNavigation, WebPreviewNavigationButton, WebPreviewUrl, WebPreviewBody, WebPreviewConsole

Using bordered components such as Message/Panel/Snippet as outer containers is not recommended.

Validation and correction:

• The server validates JSX syntax; violations error out directly
• Even if validation fails the file is still written; the error message includes the path. Fix it with Edit and the preview will refresh
• After a failure, fix via Edit—do not call JsxCreate again

Write location: [<sessionId>]/asset/jsx/<messageId>.jsx (inside the session's asset directory; Edit can patch it in place).

Interactive forms: when you need to collect user input, ask the user directly in plain text and wait for a reply. JsxCreate is for display only.

When to use ChartRender vs JsxCreate