# About the Messages API

The Wix AI Site-Chat Messages API enables you to manage site visitor messages to and from the site's AI Site-Chat.

With this API, you can:
- Create messages between a site visitor and the site's AI Site-Chat.
- Retrieve a site visitor's messages to and from the site's AI Site-Chat.

> **Note:** Wix AI Site-Chat is currently only available in the Wix Editor.


## Before you begin
It's important to note the following points before starting to code:
* Sites using this API must install the [Wix AI Site-Chat](fallback::https://www.wix.com/app-market/web-solution/wix-ai-assistant-client) app. Learn more about [adding and setting up Wix AI Site-Chat](fallback::https://support.wix.com/en/article/adding-and-setting-up-the-wix-ai-chat-assistant).
* The methods in this API must be called using the [site visitor or site member identity](fallback::https://dev.wix.com/docs/rest/articles/getting-started/about-identities#site-member) to identify the site visitor that is creating or retrieving the messages. Therefore, [Wix apps](fallback::https://dev.wix.com/docs/build-apps) can't currently call theses method using REST.

## Use cases
- [Check that a response has been sent to every message from the site visitor](fallback::https://dev.wix.com/docs/rest/business-management/ai-site-chat/ai-site-chat/messages/sample-flows#check-that-a-response-has-been-sent-to-every-message-from-the-site-visitor)

# Messages: Sample Use Cases and Flows

This article shares a possible use case your app or site could support, as well as a sample flow. This can be a helpful jumping-off point.

## Check that a response has been sent to every message from the site visitor
To check that a response has been sent to every message from the site visitor:

1. Call [List Messages](fallback::https://dev.wix.com/docs/rest/business-management/ai-site-chat/ai-site-chat/messages/list-messages).
1. Create a copy of the messages returned in the response to include only messages sent by the site visitor. Call these "questions".
1. For each "question", iterate over the messages returned in the response to check if one exists that's an `answerTo` the "questions".
1. Call [Bulk Create Messages](fallback::https://dev.wix.com/docs/rest/business-management/ai-site-chat/ai-site-chat/messages/bulk-create-messages) to send "answers" to all the unanswered "questions".

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