Jovo Debugger

Integration published by Jovo | 13,476 downloads

Browser-based tool to test and debug the conversational flow of your Jovo app

Jovo Debugger Plugin

Learn how to use the Jovo Debugger for simple testing and debugging of Alexa Skills and Google Actions.


The Jovo Debugger allows you to debug and quickly test your Jovo app by by displaying the most important information about each interaction in one place. That includes the current state of your app (e.g. route, state, inputs, etc.), the request & response and a console window for your logs.

To use the debugger you simply have to send requests to your Jovo Webhook endpoint. These can be sent from platforms like Alexa or Google Assistant as well as from the built-in request builder for quick prototyping.

Jovo Debugger

Getting Started

To be able to use the debugger, it has to be included as a plugin in your project:

After that, use the jovo run command to start your development server get the link to your Jovo Webhook endpoint:

Now, simply press the . key on your keyboard to open up the Debugger web page.

If you ever need to know in your app whether the current request comes from the Jovo Debugger, you can use the following helper:



The Data window contains all the important information of the interaction. That includes the:

  • determined route e.g. TestState.MyNameIsIntent
  • origin of the request
  • type of the request (e.g. INTENT, LAUNCH, END, etc.)
  • inputs
  • state
  • session attributes

Request and Response

The request and response windows have each three sub pages.

First, the JSON tab that simply shows the raw request and response JSON.

Second, the Database tab where you can see the database entry for the user at the time of the request and response. That allows you to see how the interaction changed the database entry.

Third, the Session Attributes which gives the same functionality as the Database tab just for the session attributes.


The Console windows displays all of your logs.

Request Builder

The request builder allows you to build custom requests to send to your Jovo Webhook endpoint for quick prototyping. You can customize the intent, the inputs as well as the utterance that should be used.

Jovo Debugger Request Builder

Custom Sequences

Testing an intent that depends on a handful of interactions before that can be quite tedious. Either you run through the interaction every time you want to test that intent, or you set up the correct environment for the intent to function correctly. Either way it's quite some work.

The Jovo Debugger allows you to define sequences of intents (and their inputs) that can be automatically run by pressing the respective button. Here's a example:

Jovo Debugger Sequence

And here's the debugger.json file for the previous example:

The JSON file has the following structure:

Name Description Value
requestBuilder Configuration of the request builder. object
requestBuilder.selected Array of strings specifying the request buttons you want to have selected by default. string[]
requestBuilder.buttons Array of custom buttons. object[]
requestBuilder.buttons[].button A custom button object. object
requestBuilder.buttons[] The name of the custom button. string
requestBuilder.buttons[].button.sequence An array of strings representing the sequence of intents. Each string has the following format: <intent-name> [<slot-name>=<slot-value>]. You can define as many slots as you want. string


The Jovo Debugger also allows you to switch between multiple locales. These are determined by the language model files found in your project, e.g. for de-DE to appear in the debugger, you need to have a de-DE.json file in your models/ folder.

If you switch the locale, you will receive utterances from the respective language model and the incoming request will have the same locale.

Jovo Debugger Locale


You can switch between Google Action and Alexa Skill request as well as choose different devices types:

Jovo Debugger Platform

Jovo Debugger Changelog

Current version might be higher than the latest changes displayed below because of updates of dependencies.

2021-01-28 [3.3.2]
  • #890 ✨ Add Conversational Actions functionality to Jovo Debugger (@aswetlow)
2020-12-03 [3.3.0]
  • #866 Add strip-ansi to remove ANSI-codes from messages that are sent to the Jovo-Debugger (@m-ripper)

3.0.11 (2020-04-06)

  • Updated Typescript to 3.8.x
  • Updated Prettier to 2.x

Committers: 2

3.0.6 (2020-03-04)

🐛 Bug Fix

  • Bring back accidentally removed feature (accept language model files in Javascript)

    Committers: 3

  • Alex (@aswetlow)


Find the 2.x changelog here.

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