A Ruby framework for interacting with Amazon Alexa. Designed to work with Sinatra, although can be used with a few other web frameworks.

An example application implementing the gem can be played with here.

Add this line to your application's Gemfile:

gem 'ralyxa'

And then execute:

$ bundle

Or install it yourself as:

$ gem install ralyxa

First, you've gotta pass the request from Sinatra to Ralyxa. Add a single POST route to your Sinatra application, with the following:

require 'sinatra'
require 'ralyxa'

post '/' do
  Ralyxa::Skill.handle(request)
end

Second, you've gotta define your intents. To define a new intent, create a directory called 'intents'. Inside there, create a .rb file:

intent "IntentName" do
  # Whatever logic you want to do
  # fetching something for the response
  # persisting something etc
  # this is plain Ruby, so go wild

  respond("This is what Alexa will say to the user")
end

Third, define your Intent and Utterance on the Alexa Developer portal. You can then test your application in the Service Simulator (either by pushing the Sinatra app somewhere with HTTPS or, more easily, using ngrok to tunnel the application).

There are two kinds of responses you can send to Alexa: asks and tells. An ask should ask the user a question, and expect them to reply. A tell should end the conversation.

When defining intents, you can use the #ask and #tell methods in place of #respond to keep the session open, or close it:

intent "AskMoreQuestions" do
  ask("What next?")
end

intent "SayGoodbye" do
  tell("Goodbye.")
end

A tell is basically a #respond with end_session: true. You can use that instead if you prefer.

You can persist data to an Alexa session:

intent "PersistThis" do
  ask("Got it. What now?", session_attributes: { persist: "this" })
end

And, subsequently, read it:

intent "ReadFromSession" do
  persisted_data = request.session_attribute("persist")
  ask("You persisted: #{ persisted_data }")
end

Go check out the Alexa::Request object to see what else you can do with the request.

If, for some reason, you want to end a session in some other way than with a tell, you can:

intent "ConfuseTheUser" do
  respond("This actually ends the session.", end_session: true)
end

You can start conversations over, which clears the session attributes:

intent "AMAZON.StartOverIntent" do
  ask("Starting over. What next?", start_over: true)
end

You can use Speech Synthesis Markup Language to directly control Alexa's pronunciation:

intent "SpellOut" do
  ask("<speak><say-as interpret-as='spell-out'>Hello World</say-as></speak>", ssml: true)
end

You can send cards to the Alexa app. Ralyxa will automatically figure out if you're trying to send a 'Simple' or 'Standard' card type:

# Simple card
intent "SendSimpleCard" do
  simple_card = card("Hello World", "I'm alive!")
  ask("What do you think of the Simple card I just sent?", card: simple_card)
end

# Standard card
intent "SendStandardCard" do
  standard_card = card("Hello World", "I'm alive!", "http://placehold.it/200")
  ask("What do you think of the Standard card I just sent?", card: standard_card)
end

After checking out the repo, run bundle install to install dependencies. Then, run rspec to run the tests. You can also run irb for an interactive prompt that will allow you to experiment.

Bug reports and pull requests are welcome on GitHub at https://github.com/sjmog/ralyxa. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The main areas of focus are:

• Account linking 🚧
• Audio directives 🚧
• Reprompts 🚧
• Generators?

The gem is available as open source under the terms of the MIT License.