Magickly is an image manipulation service. The hosted version of the app, magickly.heroku.com acts as the base URL, then the image URL is appended to the query string as a src=, followed by any of the supported operations.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.