HADotNet.Core 1.6.0

dotnet add package HADotNet.Core --version 1.6.0                
NuGet\Install-Package HADotNet.Core -Version 1.6.0                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="HADotNet.Core" Version="1.6.0" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add HADotNet.Core --version 1.6.0                
#r "nuget: HADotNet.Core, 1.6.0"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install HADotNet.Core as a Cake Addin
#addin nuget:?package=HADotNet.Core&version=1.6.0

// Install HADotNet.Core as a Cake Tool
#tool nuget:?package=HADotNet.Core&version=1.6.0                


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A simple, straighforward .NET Standard library for the Home Assistant API.


  • .NET Standard 2.0 cross-platform library
  • DI-friendly client initialization (suitable for ASP.NET Core)
  • Home Assistant data is represented by strongly-typed, commented model classes

Supported Home Assistant APIs

  • Root API (Verifies the HA API is responding)
  • Automation API
  • Google Calendar API (Unofficial)
  • Discovery API
  • Config API
  • Camera Proxy API
  • Entity API
  • Error Log API
  • Events API
  • History API
  • Logbook API
  • Services API
  • States API
  • Supervisor API (Supervisor-based installations only)
  • Template API

Getting Started


Install HADotNet.Core from NuGet:

Install-Package HADotNet.Core

From Source

Clone this repo and either include the HADotNet.Core library in your project, or build the project and include the DLL as a reference.


Initializing The Client Factory

The ClientFactory class is reponsible for initializing all other clients in a reusable way, so you only have to define your instance URL and API key once.

To initialize the ClientFactory, pass in your base Home Assistant URL and a long-lived access token that you created on your profile page.

ClientFactory.Initialize("https://my-home-assistant-url/", "AbCdEf0123456789...");

Integrating into an ASP.NET Core Site

First, call ClientFactory.Initialize(...); to ensure that your Home Assistant instance is connected. You can do this in ConfigureServices, or using middleware.

Just be sure that the client factory has been initialized before any page/controller requests are made.

You can add individual clients to the DI container like so:

services.AddScoped(_ => ClientFactory.GetClient<EntityClient>());
services.AddScoped(_ => ClientFactory.GetClient<StatesClient>());
services.AddScoped(_ => ClientFactory.GetClient<ServiceClient>());
services.AddScoped(_ => ClientFactory.GetClient<DiscoveryClient>());

Since there are no interfaces, simply add the instance(s) directly into the container. Add as few or as many clients as you need, and then simply retrieve each client via the DI container as-needed.

public class MyController : Controller
	private IOtherService SampleService { get; }
	private EntityClient EntityClient { get; }

	public MyController(IOtherService sampleService, EntityClient entityClient)
		SampleService = sampleService;
		EntityClient = entityClient;

	// ...

Getting Home Assistant's Current Configuration

Get a ConfigClient and then call GetConfiguration():

var configClient = ClientFactory.GetClient<ConfigClient>();
var config = await configClient.GetConfiguration();
// config.LocationName: "Home"
// config.Version: 0.96.1

Retrieving All Entities

Get an EntityClient and then call GetEntities():

var entityClient = ClientFactory.GetClient<EntityClient>();
var entityList = await entityClient.GetEntities();

Retrieving Entities By Domain

Get an EntityClient and then call GetEntities("domainName"):

var entityClient = ClientFactory.GetClient<EntityClient>();
var filteredEntityList = await entityClient.GetEntities("light");

Retrieving All Entity States

Get a StatesClient and then call GetStates():

var statesClient = ClientFactory.GetClient<StatesClient>();
var allMyStates = await statesClient.GetStates();

Retrieving State By Entity

Get a StatesClient and then call GetState(entity):

var statesClient = ClientFactory.GetClient<StatesClient>();
var state = await statesClient.GetState("sun.sun");
// state.EntityId: "sun.sun"
// state.State: "below_horizon"

Retrieving All Service Definitions

Get a ServiceClient and then call GetServices():

var serviceClient = ClientFactory.GetClient<ServiceClient>();
var services = await serviceClient.GetServices();

Retrieving Calendar Events

Get a CalendarClient and then call GetEvents(calEntity):

var calClient = ClientFactory.GetClient<CalendarClient>();
var myEvents = await calClient.GetEvents("calendar.my_calendar");

Calling a Service

Get a ServiceClient and then call CallService():

var serviceClient = ClientFactory.GetClient<ServiceClient>();

var resultingState = await serviceClient.CallService("homeassistant", "restart");
// Or
var resultingState = await serviceClient.CallService("light", "turn_on", new { entity_id = "light.my_light" });
// Or
var resultingState = await serviceClient.CallService("light.turn_on", new { entity_id = "light.my_light" });
// Or
var resultingState = await serviceClient.CallService("light.turn_on", @"{""entity_id"":""light.my_light""}");

Retrieving History for an Entity

Get a HistoryClient and then call GetHistory(entityId):

var historyClient = ClientFactory.GetClient<HistoryClient>();
var historyList = await historyClient.GetHistory("sun.sun");

// historyList.EntityId: "sun.sun"
// historyList[0].State: "above_horizon"
// historyList[0].LastUpdated: 2019-07-25 07:25:00
// historyList[1].State: "below_horizon"
// historyList[1].LastUpdated: 2019-07-25 20:06:00

Rendering a Template

Get a TemplateClient and then call RenderTemplate(templateBody):

var templateClient = ClientFactory.GetClient<TemplateClient>();
var myRenderedTemplate = await templateClient.RenderTemplate("The sun is {{ states('sun.sun') }}");

// myRenderedTemplate: The sun is above_horizon

Retrieving a Camera Image

Get a CameraProxyClient and then call GetCameraImage, or for a ready-to-go HTML Base64 string, GetCameraImageAsBase64:

var cameraClient = ClientFactory.GetClient<CameraProxyClient>();
var myCameraImage = await cameraClient.GetCameraImageAsBase64("camera.my_camera");

// myCameraImage: "data:image/jpg;base64,AAAAAAAAA..."


To run the unit tests, you must first set two environment variables:

  • HADotNet:Tests:Instance = https://my-home-assistant-url/
  • HADotNet:Tests:ApiKey = AbCdEf0123456789...


Fork the project, make some changes, and submit a pull request!

Be sure to follow the same coding style (generally, the standard Microsoft C# coding guidelines) and comment all publicly-visible types and members with XMLDoc comments.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
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A Home Assistant library for .NET Standard to make use of strongly typed Home Assistant entities.

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Version Downloads Last updated
1.6.0 1,476 8/14/2021
1.5.1 1,328 2/1/2021
1.5.0 289 1/31/2021
1.4.1 343 1/25/2021
1.4.0 404 1/23/2021
1.3.2 645 8/9/2020
1.3.1 504 8/9/2020
1.3.0 549 5/9/2020
1.2.2 484 4/12/2020
1.2.1 789 1/9/2020
1.2.0 509 10/5/2019
1.1.0 568 9/4/2019
1.0.0 573 8/17/2019
0.2.0 492 8/7/2019
0.1.1-beta 359 8/7/2019
0.1.0-beta 346 7/24/2019

Removed RestSharp, refactored for HttpClient, and added new clients/methods