Agent skill

Gamma Core Workflow A

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

Generate presentations, documents, and webpages via Gamma API.

MITAuto-check passedDocuments & Office

Install Gamma Core Workflow A

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill gamma-core-workflow-a -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace gamma-core-workflow-a --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/saas-packs/gamma-pack/skills/gamma-core-workflow-a .claude/skills/gamma-core-workflow-a && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
gamma-core-workflow-a
GitHub stars
2.8k
Token cost
~2k tokens
SKILL.md length
318 words
Files
1
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Generate presentations, documents, and webpages via Gamma API.

  • Works in 6 steps: Basic Presentation Generation → Full Parameter Generation → Text Mode Comparison → …
  • Creating content from text prompts
  • SKILL.md covers Output, Examples, Overview and Prerequisites, plus 6 more sections
  • Calls curl; reaches public-api.gamma.app; needs GAMMA_API_KEY

What it does

Gamma Core Workflow A is an agent skill from jeremylongshore/tons-of-skills-marketplace. Generate presentations, documents, and webpages via Gamma API. Use when creating content from text prompts, configuring themes, image styles, text modes, and output formats. Trigger: "gamma generate", "gamma presentation from text", "gamma AI slides", "gamma create deck", "gamma content generation".

Its SKILL.md is about 2k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts. Compatibility notes: Designed for Claude Code

It sits in Documents & Office, covering Slides and decks. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Creating content from text prompts
  • Configuring themes

Example prompts

  • “gamma generate”
  • “gamma presentation from text”
  • “gamma AI slides”
  • “/gamma-core-workflow-a”

Requirements

  • A credential in GAMMA_API_KEY
  • Compatibility (from SKILL.md): Designed for Claude Code
  • Pre-approved tools (allowed-tools): Read, Write, Edit, Bash(curl:*), Bash(node:*)

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Basic Presentation Generation
  2. Full Parameter Generation
  3. Text Mode Comparison
  4. Document and Webpage Generation
  5. Batch Generation with Rate Limiting
  6. curl Reference

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Write
    • Edit
    • Bash(curl:*)
    • Bash(node:*)

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • curl

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • public-api.gamma.app

    Also links to:

    • developers.gamma.app

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names these keys or tokens, usually read from environment variables:

    • GAMMA_API_KEY

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

  • Compatibility

    Designed for Claude Code

    From compatibility in the SKILL.md frontmatter.

Context cost

Gamma Core Workflow A loads about 2k tokens when it runs. Until then it costs about 81 tokens; SKILL.md has 318 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~81
When it runs · the whole SKILL.md, loaded when a task matches
~2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 318 words, ~2,048 tokens.

Download SKILL.mdSave it as .claude/skills/gamma-core-workflow-a/SKILL.md (or your agent's skills folder).
name
gamma-core-workflow-a
description
Generate presentations, documents, and webpages via Gamma API. Use when creating content from text prompts, configuring themes, image styles, text modes, and output formats. Trigger: "gamma generate", "gamma presentation from text", "gamma AI slides", "gamma create deck", "gamma content generation".
allowed-tools
Read, Write, Edit, Bash(curl:*), Bash(node:*)
compatibility
Designed for Claude Code
version
1.13.0
license
MIT
author
Jeremy Longshore <jeremy@intentsolutions.io>
tags
saas, gamma, workflow, generation

Gamma Core Workflow A: Content Generation

Output

Create a workflow receipt with opaque document ID, approved audience/destination, generation/review status, owner, and next action. Do not include private source material, viewer data, or credentials.

Examples

Generate a fictional staging deck from synthetic notes, have the content owner approve sharing, and verify a duplicate job does not republish or expose content to an unapproved audience.

Overview

Generate presentations, documents, webpages, and social posts using Gamma's Generate API (POST /v1.0/generations). This skill covers the full parameter set: content, output format, text mode, text amount, themes, image options, sharing, folders, and export format.

Prerequisites

  • Completed gamma-sdk-patterns (client wrapper ready)
  • Pro account with available credits
  • Workspace themes configured (optional)

API Parameters Reference

ParameterTypeOptionsDefault
contentstringYour text/promptRequired
outputFormatstringpresentation, document, webpage, social_postpresentation
textModestringgenerate, condense, preservegenerate
textAmountstringbrief, medium, detailed, extensivemedium
themeIdstringFrom GET /v1.0/themesWorkspace default
imageOptions.stylestringFree text (e.g., "photorealistic", "watercolor illustration")AI default
exportAsstringpdf, pptx, pngNone (no auto-export)
sharingOptionsobjectworkspaceAccess, externalAccessWorkspace defaults
folderIdsstring[]From GET /v1.0/foldersRoot folder

Instructions

Step 1: Basic Presentation Generation
typescript
import { createGammaClient, pollUntilDone } from "./lib/gamma";

const gamma = createGammaClient({ apiKey: process.env.GAMMA_API_KEY! });

// Simple generation — just content and format
const { generationId } = await gamma.generate({
  content: "Create a 10-card pitch deck for a sustainable energy startup",
  outputFormat: "presentation",
});

const result = await pollUntilDone(gamma, generationId);
console.log(`View: ${result.gammaUrl}`);
Step 2: Full Parameter Generation
typescript
// Use all available parameters for precise control
async function generateFullControl() {
  // First, discover workspace themes
  const themes = await gamma.listThemes();
  const corporateTheme = themes.find((t) => t.name.includes("Corporate"));

  // Discover folders
  const folders = await gamma.listFolders();
  const reportsFolder = folders.find((f) => f.name === "Reports");

  const { generationId } = await gamma.generate({
    content: `
      Q1 2026 Business Review
      - Revenue up 23% YoY
      - Customer acquisition cost reduced by 15%
      - Three new product lines launched
      - Team grew from 45 to 62 employees
    `,
    outputFormat: "presentation",
    textMode: "generate",      // AI expands your bullet points
    textAmount: "detailed",     // More text per card
    themeId: corporateTheme?.id,
    exportAs: "pptx",           // Auto-generate PPTX download
    imageOptions: {
      style: "professional corporate photography",
    },
    sharingOptions: {
      workspaceAccess: "comment",   // Team can comment
      externalAccess: "view",       // External viewers read-only
    },
    folderIds: reportsFolder ? [reportsFolder.id] : [],
  });

  const result = await pollUntilDone(gamma, generationId);
  console.log(`View: ${result.gammaUrl}`);
  console.log(`Download PPTX: ${result.exportUrl}`);
  console.log(`Credits used: ${result.creditsUsed}`);
}
Step 3: Text Mode Comparison
typescript
// Same content, different text modes
const content = "Benefits of remote work: flexibility, reduced commute, global talent access";

// "generate" — AI expands bullets into full paragraphs
await gamma.generate({ content, textMode: "generate", outputFormat: "presentation" });

// "condense" — AI summarizes, keeps it concise
await gamma.generate({ content, textMode: "condense", outputFormat: "presentation" });

// "preserve" — uses your text as-is, no AI rewriting
await gamma.generate({ content, textMode: "preserve", outputFormat: "presentation" });
Step 4: Document and Webpage Generation
typescript
// Long-form document
const { generationId: docId } = await gamma.generate({
  content: "Comprehensive guide to implementing CI/CD pipelines with GitHub Actions",
  outputFormat: "document",
  textAmount: "extensive",
  exportAs: "pdf",
});

// Webpage
const { generationId: webId } = await gamma.generate({
  content: "Product landing page for an AI-powered code review tool",
  outputFormat: "webpage",
  imageOptions: { style: "modern minimalist tech" },
});

// Social post
const { generationId: socialId } = await gamma.generate({
  content: "Announcing our Series A funding round of $12M",
  outputFormat: "social_post",
  textAmount: "brief",
});
Step 5: Batch Generation with Rate Limiting
typescript
import pLimit from "p-limit";

const limit = pLimit(3); // Max 3 concurrent generations

const topics = [
  "Machine Learning Fundamentals",
  "Cloud Architecture Best Practices",
  "API Design Patterns",
  "DevOps Culture and Practices",
];

const results = await Promise.allSettled(
  topics.map((topic) =>
    limit(async () => {
      const { generationId } = await gamma.generate({
        content: `Create a training deck: ${topic}`,
        outputFormat: "presentation",
        textAmount: "medium",
        exportAs: "pdf",
      });
      return pollUntilDone(gamma, generationId);
    })
  )
);

results.forEach((r, i) => {
  if (r.status === "fulfilled") {
    console.log(`${topics[i]}: ${r.value.gammaUrl}`);
  } else {
    console.error(`${topics[i]}: FAILED — ${r.reason.message}`);
  }
});
Step 6: curl Reference
bash
# Generate with all parameters
curl -X POST "https://public-api.gamma.app/v1.0/generations" \
  -H "X-API-KEY: ${GAMMA_API_KEY}" \
  -H "Content-Type: application/json" \
  -d '{
    "content": "5-card overview of AI in healthcare",
    "outputFormat": "presentation",
    "textMode": "generate",
    "textAmount": "medium",
    "themeId": "theme_abc123",
    "exportAs": "pdf",
    "imageOptions": { "style": "medical illustration" },
    "sharingOptions": {
      "workspaceAccess": "edit",
      "externalAccess": "view"
    }
  }'

Credit Cost Awareness

Image Model TierCredits per Image
Standard2-15
Advanced20-33
Premium34-75
Ultra30-125

A 10-card deck with 5 standard images costs approximately 20-60 credits.

Error Handling

ErrorCauseSolution
422 UnprocessableInvalid parameter combinationCheck parameter types and allowed values
status: "failed"Content too complex or longSimplify content or reduce scope
429 Rate LimitedToo many concurrent generationsUse p-limit for concurrency control
Empty exportUrlNo exportAs specifiedAdd exportAs: "pdf" to request

Resources

Next Steps

Proceed to gamma-core-workflow-b for template-based generation and export retrieval.

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in plugins/saas-packs/gamma-pack/skills/gamma-core-workflow-a of jeremylongshore/tons-of-skills-marketplace.

Open the folder on GitHubat commit cfae287

Compare with similar skills

Gamma Core Workflow A next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Gamma Core Workflow A compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Gamma Core Workflow A this skilljeremylongshore/tons-of-skills-marketplace2.8k—~2kAutomated safety check: PassMIT
Image To Editable Pptningzimu/image-to-editable-ppt-skill2.9k—~4.3kAutomated safety check: PassMIT
Slidesfcakyon/claude-codex-settings1.2k1 repos~1.1kAutomated safety check: PassMIT
Ppt Image FirstNyxTides/ppt-image-first1.2k—~1.6kAutomated safety check: PassApache-2.0
Vibe to Agentic Engineering Frameworkshanraisshan/claude-code-best-practice67k—~3.3kAutomated safety check: PassMIT
Gpt Image2 PptJuneYaooo/gpt-image2-ppt-skills1.3k—~8.9kAutomated safety check: NotesApache-2.0

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Questions about Gamma Core Workflow A

What does Gamma Core Workflow A do?

Generate presentations, documents, and webpages via Gamma API. Gamma Core Workflow A is an agent skill from jeremylongshore/tons-of-skills-marketplace. Generate presentations, documents, and webpages via Gamma API.

When should I use Gamma Core Workflow A?

Gamma Core Workflow A fits situations like: creating content from text prompts; configuring themes.

How do I install Gamma Core Workflow A in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill gamma-core-workflow-a -a claude-code`. Or copy the skill folder (plugins/saas-packs/gamma-pack/skills/gamma-core-workflow-a in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/gamma-core-workflow-a in your project. Claude Code loads it when a task matches its description.

How do I install Gamma Core Workflow A in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill gamma-core-workflow-a -a codex`. Or copy the skill folder (plugins/saas-packs/gamma-pack/skills/gamma-core-workflow-a in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/gamma-core-workflow-a in your project. Codex loads it when a task matches its description.

Can I use Gamma Core Workflow A in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill gamma-core-workflow-a -a cursor` (or -a -a, -a or -a for the others). To copy it by hand, put the folder in .cursor/skills/gamma-core-workflow-a, .gemini/skills/gamma-core-workflow-a, .github/skills/gamma-core-workflow-a and .opencode/skills/gamma-core-workflow-a in your project.

What does Gamma Core Workflow A need to run?

Going by SKILL.md and its folder, Gamma Core Workflow A needs the command-line tools its instructions call (curl) and credentials named GAMMA_API_KEY. Our summary lists: A credential in GAMMA_API_KEY. Its frontmatter pre-approves these tools: Read, Write, Edit, Bash(curl:*), Bash(node:*). Compatibility (from SKILL.md): Designed for Claude Code.

Does Gamma Core Workflow A access the network?

SKILL.md names 2 domains. In commands or code: public-api.gamma.app; the agent is likely to contact it when it follows the instructions. As links in the text: developers.gamma.app. This is read from the text; nothing was executed.

Is Gamma Core Workflow A safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Gamma Core Workflow A use?

Gamma Core Workflow A is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Gamma Core Workflow A use?

About 2k tokens (SKILL.md is roughly 8.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Gamma Core Workflow A?

Skills that share tags, products or a category with Gamma Core Workflow A: Image To Editable Ppt (ningzimu/image-to-editable-ppt-skill, 2.9k stars), Slides (fcakyon/claude-codex-settings, 1.2k stars), Ppt Image First (NyxTides/ppt-image-first, 1.2k stars) and Vibe to Agentic Engineering Framework (shanraisshan/claude-code-best-practice, 67k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Gamma Core Workflow A?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.