How do I pass along my user ID or API key?
If you want to make multiple calls to the API, or if you want to access premium data, you must include your API key in each call, so that Quandl can validate your identity. Here is an example of a call with an API key included:
Note that the API key dsahFHUiewjjd included at the end of the example above is a fake, and will not work in real life.
You can find your API key in your account settings.