Notifications

Add channels under Settings → Notifications. Each channel picks the events it wants:

Event	Sent when
A deploy or operation fails	Any operation fails; the message includes the explained error and the suggested fix
New image updates are found	An update check finds updates you haven’t been told about yet (once per new version)
A container stays unhealthy	A container is unhealthy, crashing or restarting for more than a minute (once per incident)
stacky updates itself	A self-update finishes, or is rolled back

Channel types

Type	URL	Token
ntfy	The full topic URL, e.g. https://ntfy.sh/my-topic	Optional access token
Gotify	Your Gotify server, e.g. https://gotify.example.com	The application token
Discord	A channel webhook URL	—
Apprise API	The notify endpoint of an Apprise API container	Optional bearer token
Webhook	Any URL; receives a JSON body	Optional bearer token

Generic webhooks receive:

{
  "event": "operation_failed",
  "title": "deploy media failed",
  "body": "Port 8096 is already in use\n\nContainer \"jellyfin\" (stack \"old-media\") already publishes port 8096 ...",
  "level": "error",
  "stack": "media",
  "source": "stacky",
  "timestamp": "2026-10-18T21:30:00.000Z"
}

Use Send test to check a channel before saving it. Tokens are stored in stacky’s database and are never sent back to the browser.