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api-overview.md

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copyright lastupdated subcollection
years
2015, 2024
2024-12-20
watson-assistant

{{site.data.keyword.attribute-definition-list}}

{{site.data.keyword.conversationshort}} API overview

{: #api-overview}

You can use the {{site.data.keyword.conversationshort}} REST APIs, and the corresponding SDKs, to develop applications that interact with the service.

Client applications

{: #api-overview-client-applications}

To build a virtual assistant or other client application that communicates with an assistant at run time, use the v2 API. You can develop a customer-facing client that can be deployed for production use, an application that brokers communication between an assistant and another service, or a testing application.

By using the v2 runtime API to communicate with your assistant, your application can take advantage of the following features:

  • Automatic state management. The v2 runtime API manages each session with a user, storing and maintaining all of the context data your assistant needs for a complete conversation.

  • Ease of deploying assistants. In addition to supporting custom clients, an assistant can be easily deployed to popular messaging channels such as Slack and Facebook Messenger.

  • Versioning. You can save a snapshot of your content and link your assistant to that specific version. You can then continue to update your development version without affecting the production assistant.

  • Search capabilities. The v2 runtime API can be used to receive responses from the search integration. When a query is submitted that your assistant can't answer, the search integration can find the best answer from the configured data sources.

For more information, see the {{site.data.keyword.conversationshort}} v2 API reference{: external}.

The {{site.data.keyword.conversationshort}} v1 API supports the /message method that sends user input directly to the workspace used by a dialog. The v1 runtime API is supported primarily for compatibility. If you use the v1 /message method, you must implement your own state management, and you cannot take advantage of versioning or any of the other features of an assistant. {: note}

Authoring applications

{: #api-overview-authoring-applications}

The v1 API provides methods that enable an application to create or modify dialog skills, as an alternative to building a skill graphically by using the classic {{site.data.keyword.assistant_classic_short}} user interface. An authoring application uses the API to create and modify skills, intents, entities, dialog nodes, and other artifacts that make up a dialog skill. For more information, see the v1 API Reference{: external}.

The v1 authoring methods create and modify workspaces rather than skills. A workspace is a container for the dialog and training data (such as intents and entities) within a dialog skill. If you create a new workspace by using the API, it appears as a new dialog skill in the classic {{site.data.keyword.assistant_classic_short}} user interface. {: note}

For a list of the available API methods, see API methods summary.