ShowMe - Visual Mockup & Annotation Tool for Gemini CLI

ShowMe lets you create visual mockups with coordinate-tracked annotations across multiple pages. Draw, annotate, and provide component-specific feedback that Gemini CLI can see and act on.

Instructions for Gemini CLI

When the user invokes /showme, execute this command and wait for the result:

Copybun run ../ai.apps/ShowMe/server/index.ts

Run the command through the powershell tool (typically mode:"sync" with a generous initial_wait) so that stdout, stderr, and the resulting JSON are captured in the transcript.

The command will:

1. Open a browser with a multi-page drawing canvas
2. Let the user create pages (blank or from images), draw, and add annotations
3. Output JSON with structured page and annotation data
4. Images are saved to temp files (paths provided in imagePath field)

---

Processing the Output

The hook output contains structured JSON with:

Copy{
  "hookSpecificOutput": {
    "decision": { "behavior": "allow" },
    "showme": {
      "pages": [
        {
          "id": "...",
          "name": "Page 1",
          "imagePath": "/tmp/showme-images/page-id.png",
          "width": 1200,
          "height": 800,
          "annotations": [...]
        }
      ],
      "globalNotes": "..."
    }
  }
}

Steps to Process:

1. Parse the JSON output - Extract the showme object
2. Read each page image - Use the imagePath field to read the PNG file
3. Review annotations - Each has coordinates and user feedback
4. Address globalNotes - Overall context or questions from the user
5. Acknowledge each annotation - Let the user know you saw their specific feedback

---

Understanding Annotations

Annotations are coordinate-tracked markers. Each has:

• number - Display order (1, 2, 3...) - unique across ALL pages
• type - The kind of marker (see below)
• bounds - Location on canvas: {x, y, width, height}
• feedback - User's specific feedback for that component

Coordinate System: (0, 0) is top-left corner. X increases rightward, Y increases downward.

---

Example Output Processing

Given this output:

Copy{
  "hookSpecificOutput": {
    "decision": { "behavior": "allow" },
    "showme": {
      "pages": [
        {
          "id": "abc123",
          "name": "Login Screen",
          "imagePath": "/tmp/showme-images/abc123.png",
          "width": 800,
          "height": 600,
          "annotations": [
            {
              "id": "ann1",
              "type": "pin",
              "number": 1,
              "bounds": { "x": 452, "y": 128, "width": 28, "height": 28 },
              "feedback": "This button should be blue, not gray"
            }
          ]
        }
      ],
      "globalNotes": "Please fix the login button styling"
    }
  }
}

You should:

1. Read the image at /tmp/showme-images/abc123.png
2. Note that annotation #1 at (452, 128) says "This button should be blue, not gray"
3. Address the global notes about button styling

---

User Instructions

Tools (use toolbar buttons)

Drawing: Pen, Rectangle, Circle, Arrow, Text, Eraser

Annotations: Pin, Area, Arrow, Highlight

Page Management

• Click + to add blank page or import image
• Click page thumbnail to switch pages
• Each page has its own annotations and undo history

Zoom & Pan

• Ctrl + Wheel - Zoom with mouse wheel
• Space + Drag - Pan canvas
• Toolbar buttons: Zoom in, Zoom out, Fit, Reset

Keyboard Shortcuts

• Ctrl+V - Paste screenshot
• Ctrl+Z - Undo
• Ctrl+Y - Redo
• Delete - Remove selected annotation
• Escape - Deselect / close popover

Workflow

1. Create pages (blank or from imported images/screenshots)
2. Draw your mockup using drawing tools
3. Switch to annotation mode and add markers
4. Click annotations to add component-specific feedback
5. Add global notes at the bottom for overall context
6. Click "Send to Gemini" when done

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Built with love by Yaron - No Fluff | YouTube