Home Assistant Operations Quick Start Check if Home Assistant is healthy: Send a notification: When to Use Triggers: - "Interact with Home Assistant" - "Call HA service" - "Send HA notification" - "Check HA health" - "Home Assistant returns 405" - "HA health check failing" Key Concepts The 405 Situation Home Assistant does NOT support HEAD requests. It returns for HEAD, which is EXPECTED and NORMAL behavior . Correct Health Check: Operations API Access Create long-lived token in HA UI → Profile → Long-Lived Access Tokens Store in .env: Send Notifications Call Services Read Entity States Suppo…