> For the complete documentation index, see [llms.txt](https://docs.aitomatic.com/dxa-factory-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aitomatic.com/dxa-factory-user-guide/api-guide/aplly/chatllm/send-message-sync.md).

# SEND Message (sync)

Synchronously send a message to an agent in a conversation and receive the response.

## Endpoint

```
POST {base_url}/conversations/{conversation_id}/messages/sync
```

## Parameters

```markdown

| Name | Type | Description |
|------|------|-------------|
| `conversation_id` | string | The ID of the conversation in uuid |

## Request Body

| Name | Type | Description |
|------|------|-------------|
| `message` | string | The message to send to the agent |

```

## Example request

```
curl -X POST '{api_endpoint}/conversations/99873177-3617-4db9-94f3-47e9c61cc434/messages/sync' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer {api_token}' \
-d '{
  "message": "Hi"
}'
```

## Advanced reasoning

To use advanced reasoning feature, user can either

1. Enable advanced reasoning from UI

<figure><img src="https://3519660898-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FCWpyD5pRWmqCpQjGz9ic%2Fuploads%2FkMQIvTTRQcOS4sNdiy69%2Fimage.png?alt=media&amp;token=e3246ae1-0c9a-47c5-9c64-fb7729174c3e" alt=""><figcaption></figcaption></figure>

2. Add `"is_run_ooda": true` in the chat request body.

```
curl -X POST '{api_endpoint}/conversations/99873177-3617-4db9-94f3-47e9c61cc434/messages/sync' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer {api_token}' \
-d '{
  "message": "Hi",
  "is_run_ooda": true,
}'
```

#### Note:

* If no plan is specify yet, system will auto generate the plan from the context
* It will take longer to get the response

### Multi-language support

* To get response other than English, please add `language_code` in the request body. List of supported language:
  * Japanese: `ja`
  * Chinese: `ch_sim`
  * Italian: `it`
  * Spanish: `es`

Example request:

```json
{
    "message": "質問",
    "language_code": "ja",
}
```