Posted in Alexa, Alexa Lambda Function Skill, Amazon Web Service, AWS, JSON, Node.js

Create a custom Alexa Lambda Function Skill

 

  1. Login to Amazon Developer account, Navigate to “AWS Lambda”; then create a new Lambda function using a blueprint with code for the basic functions that implements a simple skill in Node.js or Python. To start with sample code, click Blueprints, then select one of the skill kits, for instance “alexa-skills-kit-color-expert”
  2. Then Enter a “name” for the function.
  3. Select the “Role”, use the role under “Existing role”.
  4. and then “Create function”.
  5. This will create a sample that we can edit later as needed.

 

Then in another browser login to your “AWS Management Console” and navigate to AWS Lambda.

  • Select “US East (N. Virginia) Region on upper-right corner of the console.

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  • Select “Enable” for Skill ID Verification.

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  • And copy the Skill ID from Developer Console > Your Skills > Skill-Name> Endpoint tab>

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and past it into the Skill ID edit box as shown below:

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  • Then click “Add” and “Save”. And copy the ARN from AWS Console and past into Skill Function > Endpoint > Default Region. In this way they can interact and handshake together.

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To test our sample Lambda Function code in the Console:

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  • In the Function list, click the function name to open the details for the function and click the “select a test event > configure test events > Create new test event > Select one of the sample Alexa requests from the Event template, I choose “Alexa Start Session” > Enter the Event name > Create.

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Then click the “Test” button. The Execution result should be succeeded.

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This test was for testing the interaction. To test the skill itself, we open the skill at developer amazon console; there is a “Skill builder checklist” that I modified as needed;

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“Invocation Name” is the name of the skill to begin interaction with a particular custom skill; for instance, if invocation name is: business library then user can say: hey Alexa, open / start {Skill Invocation Name}.

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An “Intent” represents an action that fulfills a user’s spoken request. Intents can optionally have arguments called “Slots”. For example, in a Library Skill; defining librarians contact define an intent name “librarianContact” that has slots named name or contact.

There are two json files to modify/ import the custom function skill; one in developer console to “Json editor” that defines the interaction and one at AWS Console “index.js”.

Then Click “Build Model”.

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Then Click “Test” menu, to test the custom skill;

  • In the text box in Alexa Simulator, type: Alexa, open {Invocation Name};

It will show the content we provided in the “WELCOME_MESSAGE” in the json file (index.js).6

 

Then we can ask or type more questions to interact with the simulator.

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