gamma-presentation（伽玛呈现）

Gamma Presentation Generator

Generate polished presentations from a topic or content brief. Uses Gamma AI to create professionally designed slides. The user does not need a Gamma account.

When to Use

Trigger when the user wants to:

• Create a presentation, deck, or slides
• "Make me a pitch deck about X"
• "Generate slides for my talk on Y"
• "Create a presentation with 10 slides about Z"

Do NOT trigger for:

• PPTX file editing (use document-skills:pptx instead)
• HTML/web presentations (use frontend-slides instead)
• Presenton-specific requests (use presenton instead)

How to Use

Step 1: Gather Requirements

Ask the user (if not already provided):

• Topic or content: What the presentation is about
• Audience: Who is this for? (investors, team, conference)
• Length: How many slides? (default: ~8-10)
• Format: PDF or PPTX? (default: PDF)

Step 2: Prepare the Input

For best results, compose a structured prompt:

Create a [N]-slide presentation about [TOPIC].

Audience: [WHO]
Tone: [professional/casual/technical]

Key points to cover:
1. [Point 1]
2. [Point 2]
3. [Point 3]

Include: [data, charts, examples, quotes, etc.]

Step 3: Generate

GAMMA_API_KEY="$GAMMA_API_KEY" bun run ~/.claude/skills/gamma/generate.ts \
  --content "$(cat /tmp/gamma-prompt.txt)" \
  --format pdf \
  --output /tmp/presentation.pdf

Or with just a topic:

GAMMA_API_KEY="$GAMMA_API_KEY" bun run ~/.claude/skills/gamma/generate.ts \
  --topic "IrisGo Series A Pitch" \
  --pages 12 \
  --format pdf \
  --output /tmp/pitch-deck.pdf

Step 4: Deliver

• If output file was saved, tell the user the file path
• If download failed, provide the Gamma URL for manual export
• Offer to open the file or share the link

Configuration

The API key is stored in the environment. Do not expose it to the user.

# Set in your shell profile or .env
export GAMMA_API_KEY="sk-gamma-..."

Limitations

• Gamma AI designs the slides — layout and visual style are Gamma's choice
• Export to PDF/PPTX may require the Gamma URL (direct download not always available)
• Generation takes 30-90 seconds depending on complexity
• Content is limited by Gamma's input length (~4000 chars recommended)

Cost

Each generation costs Gamma credits (~$0.01/credit, typical deck = 50-100 credits). The skill owner covers this cost — users generate for free.