gem 'talk_api'

require 'talk_api'

client = TalkApi::Client.new(api_key: '<API KEY>') # TalkApi::Client instance
response = client.smalltalk('<messages>')          # Send text to API and return a response
response.success?                                  # true or false
response.first_message                             # Return a text message

client = TalkApi::Client.new(api_key: 'valid api key')
response = client.smalltalk('あのイーハトーヴォのすきとほった風、夏でも底に冷たさをもつ青いそら')
response.first_message
=> "それはいいですね"