Authentication and libraries
If you are using the TinEye API through the web page or the browser extension you can just log in with your username and password and start searching. If you're accessing the site programmatically, however, we need to make sure that the requests are really coming from you, and to do that we need to authenticate each request.
Authenticating a request placing your secret API key in the header of your secure request. You can find your API key on the Getting started page for your account, and the API documentation has a complete description of how to authenticate your requests.
For more information on how to integrate the TinEye API with your application, check out our Getting started guide.