GetGems made it possible for 65M Telegram/GetGems users to connect to Coinbase and manage their Bitcoins there from within the app. You just search for getgemsbot aka Julia and you start talk to her, it's an AI and she will introduce herself and explain what she does. This is a very user friendly way to interact with Bitcoin through Coinbase. Buying and selling bitcoins using Coinbase API can definitely be added to Julia capabilities. Simplicity at its finest.
Introducing Julia, your personal Bitcoin teller launched via Telegram