Home Assistant Apps Development

Develop, configure, test, publish, and secure Home Assistant apps (formerly known as add-ons). Apps are Docker container images managed by the Home Assistant Supervisor that extend functionality — from MQTT brokers to file-sharing services and custom web UIs.

When to Use This Skill

• Creating a new Home Assistant app from scratch
• Writing or reviewing app config.yaml configuration
• Creating or modifying app Dockerfile and build configuration
• Setting up build.yaml for multi-architecture builds
• Configuring app options and option schemas
• Implementing inter-app communication (Supervisor API, Home Assistant API, services)
• Setting up Ingress for embedded web UIs
• Writing AppArmor security profiles
• Creating app repositories with repository.yaml
• Publishing apps to container registries (GHCR, Docker Hub)
• Testing apps locally with devcontainers or Docker
• Troubleshooting app installation, runtime, or build issues
• Adding translations, documentation, changelogs, icons, and logos