Voice+
Learn to set up an Voice+ application with NLX in minutes
What's a Voice+ application?
Choosing Voice+ when creating a new application is a fast, starter application that enables true two-way, hands-free conversations between a user and AI across web or mobile applications.
This application type turns your site or app into a voice-driven assistant that can talk, understand, and do so users accomplish goals more easily and confidently:
Navigate UI: Move between pages
Fill forms: Enter fields and correct field entries
Answer questions: Pull answers from a knowledge base
Extend with MCP tools: Fetch live data or run workflows to pull in information from outside your domain
Want to try a Voice+ experience? Head to nlx.ai, and select the Touchpoint widget.
🧠 Looking for more customization options? Create a Voice+ app using the Custom app setup.
Create a Voice+ app
Select Applications in your workspace menu > Choose New application
Click Blank application from the available options > Choose Voice+
Provide a name for your application > Click Create application
Configuration
The Configuration tab allows you to provide the necessary instructions, tools, and communication method for your Voice+ app to operate.
AI Engine
An AI engine helps disambiguate human speech for language understanding and intent recognition and also help construct construct a package of your application whenever a new build is made. Select the engine in the Provider dropdown. You may choose the built-in NLX model or select a managed NLP provider you previously integrated into your workspace
Enter a succinct prompt explaining your Voice+ assistant's purpose, brand persona and guidelines, and rules for engagement with users
Delivery
An API channel is set up by default for easy installation on your web or mobile frontend. Select the three-dots menu to configure a custom conversation timeout, whitelist domains, and choose the Voice persona of your Voice+ assistant (choose from built-in Inworld AI, ElevenLabs, Hume, OpenAI, or Amazon Polly personas)
Functionality
Select a Q&A knowledge base set up on your workspace. Unknown queries from a user will go to the knowledge base to locate an answer
Assign MCP-enabled flows for your Voice+ assistant to follow structured workflows or extend capabilities to search and retrieve information outside of your domain
Click Save
Deployment
A Voice+ application's Deployment tab allows you to construct a build that contains a package of the prompt, functionality tools, and API channel details in the state exist at the time the build is created. You may then deploy a successful build to make it live or roll back to a previous deployment.
Build
Click Deployment tab > Select Create build
Review Validation check for critical errors or detected UX issues in custom flows. Before each new build initiates, a validation check is run to provide a preview of potential errors that may cause failed builds. Detected issues are listed with descriptions and potential solutions
You may provide a Description of notable build edits as a changelog
Click Create build
You may now test your newest build in your workspace using any of the test chats.
Experiencing a Failed build? Select the Details link next to the build status to expand information on what caused the failure.
Deploy
The API channel provides the frontend interface and determines how users experience your app. Deploying a build pushes your updates to the API channel, effectively making your app live outside of your NLX workspace.
Click Deploy option next to the successful build
Optional:
Deployment languages: Select the languages to include in the deployment, if multiple are available
Hosting: Host your application as a Touchpoint app via the conversational.app domain. Ideal for previewing its final look during development and sharing your app externally with collaborators. Enable the Hosting option to configure the URL (e.g.,
mybusiness.conversational.app)
Click Create deployment
Once a build is made, flows can be further edited without affecting a deployed application. Only deploying a new build will impact live applications.
Want to take your app offline? Open Details for the deployed build > Go to Danger zone and click Delete deployment. The app stays offline until you redeploy.
Voice+ app settings
General
Add or edit an optional description and resource tags
Advanced
Set a custom timeout (in seconds) for inactivity with an end user
Danger
Allows you to delete your agent application. Note that a knowledge base and tools assigned will not be deleted and remain available for use with other applications in your workspace
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