create-ppt-with-nano-banana

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---
name: create-ppt-with-nano-banana
description: Create PowerPoint presentations with AI-generated images. Use when user wants to create a presentation, make slides, build a pptx, or needs AI images for slides using x402 payments.
---

# Create PowerPoint Presentation with Nano Banana (x402)

Create visually appealing PowerPoint presentations by converting styled HTML slides to PPTX format using Playwright and PptxGenJS, with AI-generated images via the Nano Banana API using x402 payments.

## Overview

This skill converts HTML slides to PowerPoint with:
- Precise positioning and styling
- Dark theme with modern color palette
- Support for shapes, text, images, and diagrams
- Automatic validation of slide dimensions and content placement
- **AI-generated images** (optional) using Nano Banana API with x402 micropayments (0.1 USDC per image)

## Behavior

When this skill is triggered:

1. **Get presentation topic** from the user if not specified
2. **Ask if they want AI-generated images** using `AskUserQuestion`:
   - "Do you want to generate AI images with Nano Banana? (0.1 USDC per image via x402)"
   - Options: "Yes, generate images" / "No, use solid colors only"
3. **If AI images requested**:
   - Make x402 payment: see `./fluxa-wallet/x402-payment.md`
   - Call Nano Banana API with X-Payment header
   - Download and save images to slides directory
4. **Create HTML slides** using templates
5. **Build PPTX** using html2pptx.js
6. **Open the presentation** for the user

## Agent Config

The FluxA Wallet agent JWT is stored at:
```
~/.fluxa-ai-wallet-mcp/.agent-config.json
```

This config contains the agent_id, token, and JWT needed for x402 payment authorization.

## AI Image Generation via x402

When you need to generate images for slides, use the Nano Banana API with x402 payment.

### API Details

- **Endpoint:** `https://proxy-monetize.fluxapay.xyz/nano-banana/gen-image`
- **Method:** POST
- **Price:** 0.1 USDC per image (Base network)
- **Payment:** x402 protocol with FluxA Wallet

### Request Format

```json
{
  "contents": [{
    "parts": [{"text": "Your image generation prompt here"}]
  }]
}
```

### Response Format

The API returns a Gemini-style response with the image either as:
1. **Inline base64:** `response.candidates[0].content.parts[1].inlineData.data`
2. **URL reference:** `response.candidates[0].content.parts[1].inlineData.url`

### Example Flow

1. Get payment signature from FluxA Wallet API
2. Call Nano Banana API with X-Payment header
3. Extract image from response (base64 or URL)
4. Save image to slides directory
5. Reference image in HTML slide

### Image Prompt Templates

**Slide Background:**
```
Create an abstract futuristic background image for a presentation slide.
Theme: [TOPIC]
Style: Dark theme with #0f0f1a background color.
Elements: Abstract flowing digital elements, subtle geometric patterns, particles of light.
Color accents: Use hints of #667eea, #00d4ff, and #764ba2.
Mood: Professional, modern technology, clean and elegant.
The image should be subtle enough to work as a background with text overlaid on top.
Dimensions: Wide format suitable for a 16:9 presentation slide.
No text, logos, or words in the image.
```

**Icon/Illustration:**
```
Create a minimalist icon representing: [CONCEPT].
Style: Clean, professional, suitable for a business presentation.
Background: Transparent or dark (#0f0f1a).
Colors: Use blues (#667eea, #00d4ff) and purples (#764ba2) on dark background.
Size: Square format, simple and recognizable.
No text in the image.
```

## HTML Slide Requirements

### Dimensions (16:9 format)
```css
body {
    margin: 0;
    padding: 0;
    width: 720pt;
    height: 405pt;
}
```

### Critical Rules

1. **Text must be wrapped** - All text MUST be in `<p>`, `<h1>`-`<h6>`, `<ul>`, or `<ol>` tags
2. **Borders on divs only** - Backgrounds, borders, shadows only work on `<div>` elements
3. **No CSS gradients** - Use solid colors or pre-rendered PNG images
4. **Bottom margin** - Keep te