Portainer

See and control your Docker containers through Portainer - add a server by address/port and your own Portainer API key (a static access token from your account page, chosen over a login session since those expire after 8 hours).

Servers, endpoints, and containers

Mirrors this app's own Proxmox integration one level deeper: server → endpoint (Portainer's term for a managed Docker host) → container. Each endpoint gets a status sensor and a container-count sensor, auto-discovered on every poll (every 15 seconds). Each container gets a start/stop switch, a name sensor, and a restart button.

There's no separate "server online" entity - Portainer's own API already reports that per endpoint, and the app's own connection badge already shows it, so a redundant entity would just duplicate what's already visible.

Working with the Athena app

Works with Dashboard cards, History, and Automations exactly like every other integration - a Gauge or Entities card gives you a live container count at a glance, and an automation can react to a container stopping unexpectedly.