Trgr — short for trigger — is the private notification inbox for your AI agents, scripts, and automations. Lives in your menu bar. Runs entirely on your machine.
$3 once. Lifetime license. No subscription.
A focused notification inbox that gets out of your way until you need it.
Trgr is deliberately simple. No SDK. No dashboard. No config files beyond a token.
Download from the Mac App Store. Trgr lives in your menu bar from the moment it opens — no setup wizard, no account creation.
From any script, any agent, any language. Copy your token from the gear menu and fire away.
curl -X POST http://127.0.0.1:9773/notify \
-H "Authorization: Bearer $TOKEN" \
-d '{"title":"Done!","body":"Task complete."}'
The amber bolt badge updates instantly. Click to read, filter by channel, click a URL to open it. That's the whole app.
Binds to 127.0.0.1 only. Your notifications never leave your machine. No cloud relay, no server, no middleman.
Each agent or script gets its own channel. Filter in one click. Never lose signal in the noise when multiple processes are running.
One click generates your MCP config and CLAUDE.md snippet. Your AI agent gets a direct line to your menu bar automatically.
Mark a notification as priority: urgent and it also fires a macOS system notification — even when Trgr is closed.
Python, Node, Swift, Ruby, Go, shell scripts. If it can send an HTTP POST, it can talk to Trgr. No SDK required.
Launches at login. Uses almost no memory or CPU. It's a menu bar app — it stays out of your way until you need it.
Nice idea. A simple local layer for agent notifications actually makes a lot of sense.
The POST to localhost approach is clever. Clean separation between your agent logic and the display layer.
The silent failure problem is genuinely underappreciated — a process that terminates quietly is way harder to debug than one that crashes with a stack trace.
No tiers. No monthly fees. No "pro" plan with features held hostage. Just an app that works.
Does Trgr persist notifications across reboots?
Yes. Notifications are written to disk immediately on receipt (~/Library/Application Support/Fractals.trgr/notifications.json) and reloaded on launch — your history survives reboots. Enable Launch at Login in Settings and the server auto-restarts too, so nothing is missed.
Trgr is a local-only application. It does not collect, transmit, or store any personal data on any server — because there is no server. There is no Fractals server involved at any point in the operation of this app.
~/Library/Application Support/Fractals.trgr/None. Trgr has no third-party integrations, no advertising SDKs, and no telemetry libraries.
Questions? Email alan@fractals.sg
Last updated: February 2026. Applies to Trgr for macOS.