Gamma Install Auth

What it does

When your agent uses it

• Configuring API keys
• Setting up X-API-KEY header
• Initializing Gamma REST API access in a project

Example prompts

• “install gamma”
• “setup gamma API”
• “gamma auth”
• “/gamma-install-auth”

Requirements

• Python 3
• Node.js
• 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(npm:*), Bash(pip:*)

Workflow steps

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

1. 1Generate API Key
2. 2Configure Environment
3. 3Verify Connection
4. 4First API Call (Node.js)
5. 5First API Call (Python)

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(npm:*)
  • Bash(pip:*)

  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
  • 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 Install Auth loads about 1.3k tokens when it runs. Until then it costs about 70 tokens; SKILL.md has 331 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~70

When it runs · the whole SKILL.md, loaded when a task matches

~1.3k

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

• NoteMentions a .env fileSKILL.md:58

  # Set environment variable (add to .env or shell profile)

• NoteMentions a .env fileSKILL.md:61

  # .env file approach

• NoteMentions a .env fileSKILL.md:62

  'GAMMA_API_KEY=gma_your_api_key_here' >> .env

• NoteMentions a .env fileSKILL.md:135

  Add `GAMMA_API_KEY` to `.gitignore` and `.env` |

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). 331 words, ~1,277 tokens.

name

gamma-install-auth

description

Set up Gamma API v1.0 authentication and first request. Use when configuring API keys, setting up X-API-KEY header, or initializing Gamma REST API access in a project. Trigger: "install gamma", "setup gamma API", "gamma auth", "gamma API key", "configure gamma".

allowed-tools

Read, Write, Edit, Bash(curl:*), Bash(npm:*), Bash(pip:*)

compatibility

Designed for Claude Code

version

1.13.0

license

MIT

author

Jeremy Longshore <jeremy@intentsolutions.io>

tags

saas, gamma, api, authentication

# Set environment variable (add to .env or shell profile)
export GAMMA_API_KEY="gma_your_api_key_here"

# .env file approach
echo 'GAMMA_API_KEY=gma_your_api_key_here' >> .env

# Quick verification with curl
curl -s -o /dev/null -w "%{http_code}" \
  -H "X-API-KEY: ${GAMMA_API_KEY}" \
  https://public-api.gamma.app/v1.0/themes
# 200 = authenticated, 401 = invalid key

// gamma-client.ts — thin wrapper around the REST API
const GAMMA_BASE = "https://public-api.gamma.app/v1.0";

interface GammaConfig {
  apiKey: string;
  baseUrl?: string;
}

export function createGammaClient(config: GammaConfig) {
  const headers = {
    "X-API-KEY": config.apiKey,
    "Content-Type": "application/json",
  };
  const base = config.baseUrl ?? GAMMA_BASE;

  return {
    async listThemes() {
      const res = await fetch(`${base}/themes`, { headers });
      if (!res.ok) throw new Error(`Gamma API ${res.status}: ${await res.text()}`);
      return res.json();
    },
    async listFolders() {
      const res = await fetch(`${base}/folders`, { headers });
      if (!res.ok) throw new Error(`Gamma API ${res.status}: ${await res.text()}`);
      return res.json();
    },
  };
}

// Verify connection
const gamma = createGammaClient({ apiKey: process.env.GAMMA_API_KEY! });
const themes = await gamma.listThemes();
console.log(`Connected — ${themes.length} workspace themes available`);

import os, requests

GAMMA_BASE = "https://public-api.gamma.app/v1.0"
HEADERS = {
    "X-API-KEY": os.environ["GAMMA_API_KEY"],
    "Content-Type": "application/json",
}

# Verify connection
resp = requests.get(f"{GAMMA_BASE}/themes", headers=HEADERS)
resp.raise_for_status()
themes = resp.json()
print(f"Connected — {len(themes)} workspace themes available")

© 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 skills/.curated/gamma-install-auth of jeremylongshore/tons-of-skills-marketplace.

Open the folder on GitHubat commit cfae287