# Screenshot, click, type or scroll

`POST /v1/sandboxes/{sandbox}/computer`

**In this build:** Works on the simulator or a real VM. Needs a real machine. The simulator returns placeholder results.

**Scope:** `desktop`

**CLI:** `harebox computer`

## Request: `ComputerAction`

| Field | Type | Notes |
|---|---|---|
| `action` (required) | `string` | One of: `screenshot`, `click`, `double_click`, `right_click`, `move`, `drag`, `type`, `key`, `scroll`, `open_app`, `open_url`, `accessibility_tree` |
| `x` | `integer` |  |
| `y` | `integer` |  |
| `text` | `string` |  |
| `keys` | `array` |  |
| `delta` | `integer` | Scroll steps: positive scrolls down, negative up. |
| `to_x` | `integer` | Where a drag ends. |
| `to_y` | `integer` |  |
| `url` | `string` | For open_url: an http or https address to open in Chrome. |

## Response: 200

`ComputerResult`

| Field | Type | Notes |
|---|---|---|
| `ok` | `boolean` |  |
| `screenshot_url` | `string or null` |  |
| `width` | `integer` |  |
| `height` | `integer` |  |
| `screenshot_png` | `string or null` | The screenshot as base64 PNG, for screenshot actions. |
| `accessibility_tree` | `array or null` | For accessibility_tree: each node's role, name, bounds and children. |

Errors follow [one format](../errors.html).