I can submit a FormData object that includes a file upload. And get File metadata as response.
I can get the image URLs, alt text and page urls for a set of images relating to a given search string.
I can pass a URL as a parameter and I will receive a shortened URL in the JSON response.
I can get the IP address, language and operating system for my browser.
I can pass a string as a parameter, and it will check to see whether that string contains either a unix timestamp or a natural language date.