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Starting With Development


Home Assistant is built from the ground up to be easily extensible using components. Home Assistant uses Python 3 for the backend and Polymer (Web components) for the frontend.

Home Assistant is open-source and MIT-licensed. Here are links to the source::

  • home-assistant: Python server backend.
  • home-assistant-js: JavaScript backend that powers the client.
  • home-assistant-polymer: Polymer UI.
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Development Guide

  • Introduction
    • Architecture
    • Components
  • Starting with Development
    • Setting up Environment
    • Submit your Work
    • Checklist
    • Testing
    • Catching up with Reality
    • Validation
  • Support a new device (as a platform)
    • Example sensor platform
    • Example light platform
  • Adding a new component
    • Loading components
    • Requirements & Dependencies
    • Initialization
    • Handling events
    • States
    • Visibility
    • Loading Platforms
    • Component Discovery
  • Frontend Development
    • Setup Frontend Environment
    • Add State Card
    • Add More Info Dialog
    • Add Custom Panels
  • API
    • Home Assistant API
    • RESTful API
    • Python API
    • Server-sent events
  • Online helpers
  • Multiple Instances
  • Home-Assistant.io
  • Credits
Contact us at hello@home-assistant.io.
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