Getting Started

AltIndex provides alternative data on ~2,527 publicly traded stocks, ETFs, and cryptocurrencies. Track social media followers, mentions, sentiment, hiring trends, web traffic, app downloads, and more, with historical time series going back 7+ years. Access the data through the REST API for programmatic integrations, or connect via MCP to query it directly from AI assistants like Claude, Cursor, and ChatGPT.

Get your API key

AltIndex Pro subscribers ($99/mo) can create an API key in seconds:

1. Log in to your AltIndex account at app.altindex.com (opens in a new tab)
2. Go to Settings
3. Click Create API Key, then copy and store it securely

Your key gives you access to all public API endpoints with 500 requests/day and 90 days of historical data.

Make your first request

Once you have your API key, try searching for an entity:

curl -H "X-API-Key: YOUR_API_KEY" \
  "https://v2.api.altindex.com/api/entities?search=Apple"

{
  "items": [
    {
      "ticker": "AAPL",
      "name": "Apple Inc.",
      "industry": "Technology",
      "domain": "apple.com"
    }
  ],
  "total": 1,
  "limit": 50,
  "offset": 0
}

Explore the data

AltIndex tracks entities (companies, ETFs, crypto) and maps each one to its social media accounts across 8 platforms. Those mappings power time-series endpoints that return daily follower counts, mention volumes, and sentiment scores. Start with the entity endpoints to discover what's available, then pull social metrics for the tickers you care about.

Rate limits and history

Rate limits are enforced on a 24-hour rolling window. For Enterprise pricing and custom limits, contact sales (opens in a new tab).

Next steps

• REST API Reference: Authentication, scopes, error handling, and endpoint details
• MCP: Connect AltIndex to Claude, Cursor, or ChatGPT for AI-powered research
• Data Dictionary: Field definitions, platform coverage, and collection methodology