M
API Matrix

Nasdaq Data Link API

Open Data / API Key Intermediate HTTPS
Varies by plan (check documentation)
77 Score
Grade B
Visit Official Site Compare Alternatives

Overview

Nasdaq Data Link (formerly Quandl) gives you access to a vast library of financial, economic, and alternative datasets including stock prices, futures, and macro indicators. An API key is required and free accounts get access to many public datasets. It is a great resource for anyone learning to work with financial data in Python or JavaScript.

💡

Beginner Tip

Start with free public datasets like WIKI stock prices by using your API key in the query string: ?api_key=YOUR_API_KEY. The response includes dates and OHLCV (Open, High, Low, Close, Volume) columns in an easy-to-parse format.

Available Data

stock price and symbol
open/close/high/low values
trading volume
market cap
historical price data
Response fields: nasdaq com

Example Response

JSON Response 
{
  "status": "success",
  "data": {
    "result": "Data from Nasdaq Data Link",
    "description": "Stock market data",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

dataset.name Human-readable name of the dataset
dataset.column_names List of column headers corresponding to each data row (e.g., ["Date", "Open", "Close"])
dataset.data Array of data rows, each row matching the order of column_names
dataset.frequency How often the data is updated, e.g., "daily", "monthly"
dataset.newest_available_date The most recent date for which data is available

Implementation Example 

const url = "https://docs.data.nasdaq.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

400 You have submitted an incorrect Quandl code The dataset or ticker symbol you requested does not exist or is misspelled
✓ Double-check the database code and dataset code (e.g., WIKI/AAPL), and browse Nasdaq Data Link for valid codes
403 You are not authorized to access this dataset The dataset requires a premium subscription
✓ Check the dataset page for access requirements; look for free alternatives or use public datasets like FRED
429 Too many requests Exceeded the free tier rate limit (50 requests/10 minutes)
✓ Add delays between requests, cache results, or upgrade your plan

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 10/20
🔒 Security 15/15
🛠 Developer XP 12/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS UNKNOWN
Category Open Data
Difficulty Intermediate
Verified: 2026-04-04

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