In order to access data in your application, you’ll need to get a Flickr API key. You can do this by creating an app here
If you believe your application will exceed the rate limit, please contact us to request a higher rate limit for your application.
Learn how to use the API through descriptions of its queries and parameters. In addition, the documentation also inculdes sample code to help get you started.
Join the conversation on the developer forum to get help and touch base with other developers.