Native OS notifications for OpenCode.

A plugin for OpenCode that delivers Native OS notifications when tasks complete, errors occur, or the AI needs your input. It uses native OS notification delivery on macOS, Windows, and Linux, with an additional cmux-native path when available.

You delegate a task and switch to another window. Now you're checking back every 30 seconds. Did it finish? Did it error? Is it waiting for permission?

This plugin solves that:

• Stay focused - Work in other apps. A notification arrives when the AI needs you.
• Native OS notifications first - Uses macOS Notification Center, Windows Toast, or Linux notify-send via node-notifier.
• Smart defaults - Won't spam you. Only notifies for meaningful events, with parent-session filtering and quiet-hours support.
• Additional cmux-native path - When running in cmux, can route through cmux notify and still falls back safely to desktop notifications.

ocx add kdco/notify --from https://registry.kdco.dev

If you don't have OCX installed, install it from the OCX repository.

Optional: Get everything at once with kdco-workspace:

ocx add kdco/workspace --from https://registry.kdco.dev

"Notify the human when the AI needs them back, not for every micro-event."

The plugin automatically:

1. Detects your terminal emulator (supports 37+ terminals)
2. Suppresses session.idle, session.error, and permission.updated notifications when your terminal is focused on macOS
3. Enables click-to-focus on macOS (click notification → terminal foregrounds)

Question notifications intentionally bypass macOS focus suppression so direct prompts are not missed.

By default, notifications go through the native OS desktop notification path:

• macOS: Notification Center (terminal-notifier backend)
• Windows: Toast notifications (SnoreToast backend)
• Linux: notify-send

When running inside cmux (with CMUX_WORKSPACE_ID set), the plugin can also send notifications via cmux:

cmux notify --title "..." --subtitle "..." --body "..."

If cmux is unavailable or invocation fails, notifications automatically fall back to the existing node-notifier desktop behavior.

Works out of the box. To customize, create ~/.config/opencode/kdco-notify.json:

{
  "notifyChildSessions": false,
  "terminal": "ghostty",
  "sounds": {
    "idle": "Glass",
    "error": "Basso",
    "permission": "Submarine",
    "question": "Submarine"
  },
  "quietHours": {
    "enabled": false,
    "start": "22:00",
    "end": "08:00"
  }
}

Configuration keys:

• notifyChildSessions (default false): when true, include child/sub-session session.idle and session.error notifications (question and permission notifications are unaffected).
• terminal (optional): override terminal auto-detection.
• sounds: per-event sounds (idle, error, permission, optional question).
• quietHours: scheduled suppression window.

Available macOS sounds: Basso, Blow, Bottle, Frog, Funk, Glass, Hero, Morse, Ping, Pop, Purr, Sosumi, Submarine, Tink

Minimal footprint. The plugin is event-driven - it listens for session events and fires notifications. No tools are added to your conversation, no prompts are injected beyond initial setup.

No. Smart defaults prevent noise:

• Only notifies for parent sessions (not every sub-task)
• Supports quiet-hours suppression
• Suppresses when your terminal is the active window on macOS (except direct question notifications)

This plugin does not currently expose an enabled config flag. To disable notifications, remove/uninstall the plugin (for example: ocx remove kdco/notify) and add it back when needed.

Uses detect-terminal to automatically identify your terminal. Supports 37+ terminals including:

Ghostty, Kitty, iTerm2, WezTerm, Alacritty, Hyper, Terminal.app, Windows Terminal, VS Code integrated terminal, and many more.

If you prefer not to use OCX, copy the plugin files into .opencode/plugins/ and preserve the multi-file layout:

• .opencode/plugins/notify.ts
• .opencode/plugins/notify/backend.ts
• .opencode/plugins/notify/cmux.ts
• .opencode/plugins/kdco-primitives/types.ts
• .opencode/plugins/kdco-primitives/with-timeout.ts

Caveats:

• Manually install dependencies (node-notifier, detect-terminal)
• Install cmux if you want the additional cmux-native notification path
• Updates require manual re-copying

This plugin is part of the KDCO Registry. For the full experience, check out kdco-workspace which bundles notifications with background agents, specialist agents, and planning tools.

This project is not built by the OpenCode team and is not affiliated with OpenCode in any way.

MIT