Quick answer
Nasdaq Data Link (formerly Quandl) is a marketplace of financial, economic and alternative datasets, each from a publisher with its own terms, served through one REST API (time-series and tables) with an API key. Some datasets are free; most premium ones are paid subscriptions.
Nasdaq Data Link API at a glance
- Pricing
- Free and premium datasets
- Availability
- Worldwide
- Paper trading
- Not applicable (data only)
- Integration type
- REST + API key
- In AlgoGP
- Design and backtest in AlgoGP, connect the exported code
- Base
https://data.nasdaq.com/api/v3/- Python
pip install nasdaq-data-link- Formats
- Time-series datasets and tables (datatables)
- Licensing
- Per dataset/publisher
Datasets and licensing
Each product (e.g. a fundamentals table or futures history) has its own code, schema, price and terms. Check the product page before building on it, especially for commercial use.
Use Nasdaq Data Link in AlgoGP
Nasdaq Data Link is read by the generated data_sources.py. Turn it on from config.json under filters.sentiment. In-app backtests replay news and sentiment from dated, keyless archives, so a key, if any, is only used when the exported live.py runs; store it in the project’s Keys & secrets or a local .env.
| Key | What it is |
|---|---|
NASDAQ_DATA_LINK_API_KEY | Nasdaq Data Link API key from your account settings. |
.env.New to Nasdaq Data Link? Follow the step-by-step Nasdaq Data Link API key guide.
Nasdaq Data Link API: frequently asked questions
Is Quandl still available?
Quandl is now Nasdaq Data Link; use the nasdaq-data-link package and data.nasdaq.com.
Is Nasdaq Data Link free?
Some datasets are free with a key; premium datasets are paid subscriptions.
Add Nasdaq Data Link signals to a strategy
Combine price rules with news and sentiment filters, test them point-in-time so nothing leaks from the future, and export the code.
- Sentiment filters that block entries on bad news
- Point-in-time replay in every backtest
- Exported Python reads the same feed live
Free plan, no card required.
Nasdaq Data Link alternatives
- Financial Modeling Prep API Built into AlgoGP (data)Fundamentals, earnings, transcripts and end-of-day prices for global equities in one REST API.
- EODHD API Built into AlgoGP (data)EOD Historical Data: global end-of-day and intraday prices for 150k+ tickers, fundamentals, FX and crypto at low cost.
- Databento API GuideInstitutional-quality tick, depth (L2/L3) and OHLCV data for US equities, futures and options, billed by usage.
Independent guide. AlgoGP is not affiliated with Nasdaq Data Link. Limits, prices and availability change; confirm them in the official documentation. Nothing here is investment advice.