# POST /files/mkdir

Create a directory or project folder.

This is a device HTTP route. Set `DEVICE_URL` to your reachable device URL; [connection and examples](https://mcp.applesauceos.com/doc/http.md) explain how. Do not append this path to the public MCP URL.

## Parameters

| Parameter | Type | Meaning |
| --- | --- | --- |
| `path` | JSON string | Required relative directory path. |

## Response

JSON {path,created:true}.

## Example

```sh
curl --fail-with-body "$DEVICE_URL/files/mkdir" \
  -H 'Content-Type: application/json' \
  -d '{"path":"Demo.cso"}'
```

Paths are relative to Scripts. Absolute paths, parent traversal and symlink traversal are rejected. [File rules](https://mcp.applesauceos.com/doc/http-guide.md#files-and-project-directories) apply to every file endpoint.

Check the HTTP status and any JSON error. [HTTP workflows and error handling](https://mcp.applesauceos.com/doc/http-guide.md) explain shared limits. [All endpoints](https://mcp.applesauceos.com/doc/http.md).