core

:house_with_garden: Open source home automation that puts local control and privacy first.

24 articles

Understanding hass.data, runtime_data, and Config Entry Data in Home Assistant

Discover the relationship between hass.data, runtime_data, and config entry data in Home Assistant. Understand how these elements manage persistent configurations and live integration objects for seamless operation.

internals

Feb 28, 2026

Home Assistant Log Rotation and File Logging Configuration: A Technical Deep Dive

Explore Home Assistant log rotation and file logging. Learn how HA uses custom handlers and async queues for efficient log management, preventing event loop blocking. Optimize your HA logs.

deep-dive

Feb 28, 2026

Home Assistant Runtime Configuration Structure and Runner Injection

Understand the Home Assistant runtime configuration structure and how it's injected into the runner. Learn how flags and environment settings populate the core config object.

internals

Feb 28, 2026

How Home Assistant Config Validation Works with Voluptuous Schemas

Understand how Home Assistant uses Voluptuous schemas for robust config validation across YAML, UI, and service calls. Learn the validation process in this technical guide.

internals

Feb 28, 2026

What Are Event Types in Home Assistant? Architecture and Usage Guide

Discover Home Assistant event types how they define and categorize events. Learn about the EventBus architecture and usage for streamlined smart home automation.

architecture

Feb 28, 2026

How Home Assistant's Thread Pool Executor Manages Blocking Operations

Discover how Home Assistant's InterruptibleThreadPoolExecutor manages blocking operations, keeping your asyncio event loop responsive and ensuring safe thread termination.

internals

Feb 28, 2026

JSON Utilities API in Home Assistant Helpers: Complete Developer Guide

Explore the Home Assistant JSON utilities API for high-performance serialization with orjson custom encoders and error handling. Master JSON in HA helpers.

developer-guide

Feb 28, 2026

How Recovery Mode and Debug Mode Affect Home Assistant Startup

Understand how Recovery Mode and Debug Mode impact Home Assistant startup. Learn about core HTTP services, custom component skipping, verbose logging, and runtime validation.

internals

Feb 28, 2026

Home Assistant Core Config Update Mechanism and Event System Explained

Understand the Home Assistant core config update mechanism and event system. Learn how async_update fires core_config_updated events to notify listeners.

internals

Feb 28, 2026

How the Home Assistant Requirements System Manages Python Dependencies for Integrations

Discover how Home Assistant manages Python dependencies for integrations using its requirements system. Learn about automatic installation, caching, and dependency chains via manifest.json and the core requirements module.

internals

Feb 28, 2026

Home Assistant Exception Types: A Complete Guide to Error Handling in Core

Explore Home Assistant exception types for robust error handling. Understand core errors, validation, setup, and authentication failures with this complete guide.

deep-dive

Feb 28, 2026

How Home Assistant Configures Its Fault Handler and Logging System

Discover how Home Assistant configures its fault handler and logging system. Learn about crash trace capture and async-safe logging architecture for robust automation.

internals

Feb 28, 2026

Have a question about this repo?

These articles cover the highlights, but your codebase questions are specific. Give your agent direct access to the source. Share this with your agent to get started:

Share the following with your agent to get started:

curl -s "https://instagit.com/install.md"

Add to your MCP client configuration:

{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
}

Ask your agent:

"Use Instagit MCP to understand how home-assistant/core works."

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