> ## Documentation Index
> Fetch the complete documentation index at: https://docs.typebot.com/llms.txt
> Use this file to discover all available pages before exploring further.

# API

Your bot can also be executed with HTTP requests. This is useful if you want to integrate your bot with another service or if you want to use it in a different programming language.

## Test

1. All your requests need to be authenticated with an API token. [See instructions](/api-reference/authentication).
2. To start the chat, send a POST request to `https://typebot.io/api/v1/typebots/<typebot ID>/preview/startChat` The first response will contain a sessionId that you will need for subsequent requests.
3. To send replies, send POST requests to `https://typebot.io/api/v1/sessions/<session ID>/continueChat`
   With the following JSON body:

   ```json theme={null}
   {
     "message": "This is my reply"
   }
   ```

Check out the [Start preview chat API reference](/api-reference/chat/start-preview-chat) for more information

## Live

1. To start the chat, send a POST request to `https://typebot.io/api/v1/typebots/<public ID>/startChat` The first response will contain a sessionId that you will need for subsequent requests.
2. To send replies, send POST requests to `https://typebot.io/api/v1/sessions/<session ID>/continueChat`
   With the following JSON body:

   ```json theme={null}
   {
     "message": "This is my reply"
   }
   ```

Check out the [Start chat API reference](/api-reference/chat/start-chat) for more information