The Steamworks Web API allows players to verify credentials, checks if users own an application, retrieves statistics, achievements, and leaderboard scores, and performs in-game purchases. It requires an API Key to make callbacks that return JSON responses.
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.