Tools and MCP

Built-in device tools

Tool	Description
get_time	Current time / date
set_alarm / cancel_alarm	Device alarms
open_app	Launch by package name
search_web	Browser search
get_weather	Weather lookup
send_sms	SMS compose/send
open_settings	System settings
take_screenshot	Capture via MediaProjection

Definitions: lib/tools/tool_definitions.dart
Native: android/.../ToolExecutor.kt

Progress streams over EventChannel('dev.nova.assistant/tools_progress').

Dart-side tools

Tasks and notes are executed in Dart (TaskService, NoteService) without native code.

MCP

Nova supports:

• HTTP + SSE (legacy MCP transport)
• stdio (local process; Node required on device/host)

Not yet: Streamable HTTP + OAuth (e.g. Have I Been Pwned returns HTTP 405 on legacy GET SSE).

Configure servers in Settings → MCP. On connect failure, the UI shows a clear error.

Screenshot / vision

1. Grant MediaProjection when prompted
2. Tool or UI requests capture → ScreenshotService.requestCapture()
3. Bytes fetched via screenshot MethodChannel
4. Orchestrator attaches Message.withImage when the active engine supports vision