Welcome to the AltIndex API
Not in the right place? See our web application at altindex.com (opens in a new tab)
AltIndex provides a REST API for alternative data on ~2,527 publicly traded stocks, ETFs, and cryptocurrencies. It delivers structured social, sentiment, hiring, web traffic, and app intelligence signals -- with historical time series going back 7+ years.
Who This Is For
AltIndex Pro Subscribers -- You get API access as part of your AltIndex Pro subscription. Automatic API key provisioning is coming soon. For now, contact us to activate your V2 API key.
Enterprise / Institutional (Priority Access) -- We prioritize onboarding and provisioning for institutional clients, with custom API keys, higher rate limits, and access to raw, event-level (non-aggregated) data where available for hedge funds, quant teams, and data vendors. Contact us to discuss requirements.
What Can You Do with the API?
- Track which tickers are gaining or losing attention on Reddit and other platforms
- Monitor companies expanding headcount or increasing job postings
- Analyze web traffic trends over time for any covered company
- Identify the strongest stocks across our alternative data signals
Explore the Documentation
- Data Coverage -- Every dataset and metric available via the API
- Knowledge Graph -- How we map tickers to social accounts
- Collection & Freshness -- Update frequency and historical depth
- API Versions -- Understand V1 vs V2 and which to use
- Data Dictionary -- Detailed definitions of entities, social followers, mentions, and sentiment data
- API V2 -- Authentication, rate limits, code examples, and the full endpoint reference
- API V1 (Legacy) -- Reference for the legacy API surface
Get Started
- Understand our coverage: start with Data Coverage and the Knowledge Graph.
- Request access: Contact us (opens in a new tab) to discuss your requirements.
- Integrate: follow the API V2 guide for authentication, rate limits, and code examples.
Feedback
Join our Discord community (opens in a new tab) -- we actively incorporate developer feedback into the API.