How much does API usage cost?
It is free to use to our API; however, premium data feeds require a paid subscription. Free data feeds, on the other hand, are readily accessible. If you already have a Quandl account, you can find your API key by logging in to your account at www.quandl.com and going to Account Settings > API key.
If you do not have an account yet, you may sign up for one here to get an API key. It is free to create an account and no credit card is required.
When you sign up for an account, you will be asked your purpose for using Quandl (ie. Business, Academic or Personal). Please ensure that you select the most appropriate purpose for you.