The PotChain Web Socket API is an open-source bitcoin websocket API. the Web Socket API allows you develop bitcoin-related applications (such as wallets) that require certain information from the blockchain that bitcoind does not provide. The web socket API is served using socket.io.
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.