The web remote

The remote is a web page miditool serves on your local network: scene switching, a live event monitor, and a panic button, sized for a phone on a music stand. No app, no account, no cloud.

Turn it on

Add a remote node to the config:

input "Roland"
remote port=8320 bind="0.0.0.0"

scene "scrambled" {
    shuffle-lock seed=42
}
scene "echoes" {
    echo repeats=4 time="300ms" decay=0.7
}

bind="0.0.0.0" opens the remote to your local network, which is what a phone on a music stand needs. Without it the remote binds loopback and answers this machine only, so turning it on never exposes anything by accident.

Run miditool, then open the remote from any phone, tablet, or laptop on the same network:

http://<your-computer>.local:8320     e.g. http://studio-mac.local:8320
http://<LAN-IP>:8320                  e.g. http://192.168.1.20:8320

Finding your computer’s address

macOS: the .local name is your computer’s name from System Settings, General, Sharing (shown at the bottom). For the numeric address, run ipconfig getifaddr en0.
Linux: hostname -I prints the LAN IP; many distributions also answer at <hostname>.local via Avahi.
Windows: run ipconfig and use the IPv4 Address of your active adapter.

The remote never serves beyond your local network. It is a plain HTTP server; with bind="0.0.0.0" it answers your machine’s LAN interfaces, nothing leaves your network, and nothing on the internet can reach it. Omit bind= (or write bind="127.0.0.1") to keep it reachable from this machine only.

What the screen shows

The remote on a phone: a nameplate header with a green connection lamp, a bank of three scene keys with the active one inverted, a live monitor tape of note events, and a red PANIC switch across the bottom.

Top to bottom:

Connection lamp: green while the browser is connected to miditool, red when it is not. When the connection drops, the panel dims and reconnects on its own.
Scene keys: one per scene block, in file order. Tap to switch; the active scene is shown inverted once miditool confirms the switch. What happens to sounding notes on a switch is the scene’s switch= setting: see Config files.
Monitor: the transformed event stream as it heads to the DAW, newest first, with timestamps, channels, note names, and velocities.
PANIC: releases every sounding note immediately. The press is logged on the monitor tape.

On a tablet or a laptop the layout is the same single column, centered:

The remote on an iPad in portrait: the same scene keys, monitor tape, and PANIC switch in one centered column with wide margins.

The remote in a desktop browser window: the centered column layout at 1280 pixels wide.

Notes

The remote works only when the config uses scene blocks; with one implicit scene there is still a monitor and a panic button, just a single scene key.
Several devices can be connected at once; they all stay in sync.
The port is yours to choose, 1..=65535. If another service already has it, miditool reports the conflict at startup.