Built-in Tools

The Flutter MCP Toolkit comes with a set of pre-built tools and resources for common development tasks.

Note:

• Requires a connected Flutter app in debug mode with VM service enabled (see the run flags above).
• If VM service is not connected, the tool returns an error message instead of failing the whole request.

Core Tools

• hot_reload_flutter: Performs a hot reload of the Flutter app.
• hot_restart_flutter: Performs a hot restart of the Flutter app.
• get_vm: Returns information about the Dart VM.
• get_extension_rpcs: Lists the available extension RPCs in the Flutter app.

Hot Restart Tool Usage

The server now provides a dedicated hot restart tool for situations where hot reload isn't sufficient (for example after adding service extensions or when the app state is corrupted):

{
  "name": "hot_restart_flutter",
  "arguments": {}
}

Expected result:

{
  "message": "{\"report\":{\"type\":\"Success\",\"success\":true}}"
}

Debug Dump Tools

These tools are disabled by default and can be enabled with the --dumps flag.

• debug_dump_layer_tree: Dumps the layer tree.
• debug_dump_semantics_tree: Dumps the semantics tree.
• debug_dump_render_tree: Dumps the render tree.
• debug_dump_focus_tree: Dumps the focus tree.

Resources

• visual://localhost/app/errors/latest: Gets the latest errors from the app.
• visual://localhost/view/details: Gets details about the current view.
• visual://localhost/view/screenshots: Takes a screenshot of the app.