gamma-slides

name	gamma-slides
description	Generate presentation slide decks from markdown content using the Gamma API. Use when user says "create slides", "make a presentation", "build a deck", "generate a slide deck", or asks to turn content into slides. Run with /gamma-slides.
model	haiku
context	fork
allowed-tools	Bash(python3 .claude/skills/gamma-slides/scripts/*)
user-invocable	true

Gamma Slides

Generate presentations from markdown content via the Gamma API.

Objective

Take markdown content (outline, notes, or structured text) and produce a polished slide deck using Gamma's AI presentation engine. Returns a live URL to the presentation.

Inputs Required

• Markdown content for the presentation (outline, notes, or full text)
• GAMMA_API_KEY environment variable

Execution Steps

Step 1: Prepare Content

Structure the input as markdown with clear slide breaks:

# Presentation Title

## Slide 1: Opening Hook
Key point or question to grab attention

## Slide 2: The Problem
- Pain point 1
- Pain point 2
- Why this matters

## Slide 3: The Solution
...

If the user provides rough notes, structure them into slides first.

Step 2: Generate Presentation

python3 .claude/skills/gamma-slides/scripts/create_presentation.py --content content.md

Process:

1. Sends markdown to Gamma API
2. Gamma generates slides with professional design
3. Script polls for completion (can take 30-90 seconds)
4. Returns the live presentation URL

Output: JSON with url (live Gamma link), id (presentation ID), title

Step 3: Present Results

Return the Gamma URL to the user. The presentation is:

• Immediately viewable and shareable
• Editable in Gamma's web editor
• Exportable to PDF or PowerPoint

Edge Cases

• Content too long: Break into sections, suggest splitting into multiple decks
• Gamma API timeout: Retry once after 30 seconds
• No GAMMA_API_KEY: Tell user to add it to .env and point to docs
• Content too short: Suggest adding more substance before generating

Environment Variables Required

GAMMA_API_KEY=     # Get from gamma.app

Tips for Good Slides

• One key idea per slide
• Use bullet points, not paragraphs
• Include a clear hook/opening and strong close
• 8-15 slides is the sweet spot for most presentations
• Let Gamma handle the design — focus on content quality