# Demo server APIs (/en/ai/device-kit/build/demo-server-apis)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

The demo server provides three RESTful APIs for device operations. This example project does not implement authentication. You can add authentication as needed.

**Base URL**: `https://your-domain.com/`

**Authentication**: None

## Get device RTC token [#get-device-rtc-token]

Retrieves RTC credentials for the device to join a channel.

* **Method**: POST
* **Endpoint**: `/device`
* **Request body**:

  ```json
  {
    "channel_name": "DEVICE_ID",
    "uid": DEVICE_USER_ID
  }
  ```

## Start conversational AI agent [#start-conversational-ai-agent]

Starts the Conversational AI Engine for the specified channel.

* **Method**: POST
* **Endpoint**: `/agent/start`
* **Request body**:

  ```json
  {
    "channel_name": "DEVICE_ID",
    "uid": DEVICE_USER_ID,
    "agent_uid": AGENT_USER_ID
  }
  ```

## Stop conversational AI agent [#stop-conversational-ai-agent]

Stops the Conversational AI Engine.

* **Method**: POST
* **Endpoint**: `/agent/stop`
* **Request body**:

  ```json
  {
    "agent_id": "AGENT_ID"
  }
  ```