L9 is a URL shortening service. Users can use it to shorten long URLs to a more manageable format. Developers can gain access to the L9 API for programmatic access to L9's tools. There are two APIs, a JSON API and a REST API; both are used to shorten URLs, but they return different types of data. The JSON API returns an array with many different values including error messages while the REST API only returns the URL or an error.
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.