SkillHub

gamma-presentations

v1.0.0

Create presentations, documents, social posts, and websites using Gamma's AI API. Use when asked to create slides, presentations, decks, documents, or web content via Gamma.

Sourced from ClawHub, Authored by MrGoodB

Installation

Please help me install the skill `gamma-presentations` from SkillHub official store. npx skills add MrGoodB/gamma-presentations

Gamma API Skill

Create presentations and documents programmatically via Gamma's API.

Setup

  1. Get API key from https://developers.gamma.app
  2. Store in environment: export GAMMA_API_KEY=sk-gamma-xxx Or add to TOOLS.md: Gamma API Key: sk-gamma-xxx

Authentication

Base URL: https://public-api.gamma.app/v1.0
Header: X-API-KEY: <your-api-key>

Generate Content

curl -X POST https://public-api.gamma.app/v1.0/generations 
  -H "Content-Type: application/json" 
  -H "X-API-KEY: $GAMMA_API_KEY" 
  -d '{
    "inputText": "Your content here",
    "textMode": "generate|condense|preserve",
    "format": "presentation|document|social|webpage"
  }'

Response: {"generationId": "xxx"}

Check Status

curl https://public-api.gamma.app/v1.0/generations/<generationId> 
  -H "X-API-KEY: $GAMMA_API_KEY"

Response (completed): {"status": "completed", "gammaUrl": "https://gamma.app/docs/xxx", "credits": {...}}

Poll every 10-20s until status: "completed".

Key Parameters

Parameter Values Notes
textMode generate, condense, preserve generate=expand, condense=summarize, preserve=keep exact
format presentation, document, social, webpage Output type
numCards 1-60 (Pro), 1-75 (Ultra) Number of slides/cards
cardSplit auto, inputTextBreaks Use n---n in inputText for manual breaks
exportAs pdf, pptx Optional export format

Optional Parameters

{
  "additionalInstructions": "Make titles catchy",
  "imageOptions": {
    "source": "aiGenerated|unsplash|giphy|webAllImages|noImages",
    "model": "imagen-4-pro|flux-1-pro",
    "style": "photorealistic, modern"
  },
  "textOptions": {
    "amount": "brief|medium|detailed|extensive",
    "tone": "professional, inspiring",
    "audience": "tech professionals",
    "language": "en"
  },
  "cardOptions": {
    "dimensions": "fluid|16x9|4x3|1x1|4x5|9x16"
  }
}

Note: textOptions.tone and textOptions.audience are ignored when textMode is preserve.

Other Endpoints

  • GET /themes — List available themes (use themeId in generation)
  • GET /folders — List folders (use folderIds in generation)

Workflow

  1. Check for API key in environment ($GAMMA_API_KEY) or TOOLS.md
  2. Build inputText with content (can include image URLs inline)
  3. POST to /generations → get generationId
  4. Poll /generations/{id} until status: "completed"
  5. Return gammaUrl to user