Twelve Data
Stocks Free key (no card)
AuthenticationFree key (no card)
Rate limitFree Basic plan: 8 API credits per minute and 800 per day
Documentation: twelvedata.com ยท Checked Sep 13, 2026
About
Twelve Data is a single API that covers more than a million instruments across stocks, currencies, crypto, ETFs, and commodities, plus built-in technical indicators. You can use it to build a multi-asset portfolio tracker, to fetch a stock's RSI or moving average without writing the math yourself, or to compare ETF prices side by side. The free plan runs on an API-credit system with a daily refill.
Details
Free to start. You may need a free key, but no credit card.
Auth: Free key (no card)
Rate limit: Free Basic plan: 8 API credits per minute and 800 per day
Verified: 2026-09-13
Best for: personal developer
Setup
- Sign up for a free account on twelvedata.com and open your dashboard.
- Copy your API key from the dashboard.
- Follow the quickstart at https://twelvedata.com/docs/ for your first request.
- Test the price endpoint in your browser: https://api.twelvedata.com/price?symbol=AAPL&apikey=YOUR_API_KEY.
- Remember that heavier calls cost more credits, so check each endpoint's credit cost in the docs.
Example
https://api.twelvedata.com/price?symbol=AAPL&apikey=YOUR_API_KEYUse cases
- Multi-asset portfolio tracker in one dashboard
- Fetch RSI or moving averages without doing the math yourself
- Compare ETF and fund prices across markets