How do I pass along my user ID or API key?

You can append your API key to your requests using the api key parameter:

&api_key=<YOURAPIKEY> 

To learn more about using the API, please see our complete API documentation here. Please note that you need to have a Quandl account in order to have an API key.

If you do not have an account yet, you may sign up for one here. 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.

Once your account is created, you can find your API key under Account Settings > API key.