Use [Home Assistant Cloud](/cloud/) to integrate with Google Assistant without any effort.
The `google_assistant` component allows you to control things via Google Assistant (on your mobile or tablet) or a Google Home device. The Google Assistant component requires a bit more setup than most due to the way Google requires Assistant Apps to be set up.To use Google Assistant, your Home Assistant configuration has to be externally accessible with a hostname and SSL certificate. If you haven't already configured that, you should do so before continuing.
## {% linkable_title Migrate to release 0.80 and above %} Since release 0.80, the `Authorization Code` type of `OAuth` account linking is supported. To migrate your configuration, you need: 1. Change your `Account linking` setting in [Actions on Google console](https://console.actions.google.com/), look for the `Advanced Options` in the bottom left of the sidebar. - Change `Linking type` to `OAuth` and `Authorization Code`. - In the `Client information` section: - Change `Client ID` to `https://oauth-redirect.googleusercontent.com/`, the trailing slash is important. - Input any string you like into `Client Secret`, Home Assistant doesn't need this field. - Change `Authorization URL` to `https://[YOUR HOME ASSISTANT URL:PORT]/auth/authorize` (replace with your actual URL). - Change `Token URL` to `https://[YOUR HOME ASSISTANT URL:PORT]/auth/token` (replace with your actual URL). - In the `Configure your client` section: - Do **NOT** check `Google to transmit clientID and secret via HTTP basic auth header`. - Click 'Save' at the top right corner, then click 'Test' to generate a new draft version of the Test App. 2. Change your `configuration.yaml` file: - Remove `client_id`, `access_token`, `agent_user_id` config from `google_assistant:` since they are no longer needed. 3. Restart Home Assistant, open the `Google Assistant` app on your mobile phone then go to `Settings > Home Control`, re-link `[test] your app name`. 4. A browser will be open and asking you to login to your Home Assistant instance, it will redirect back to `Google Assistant` app right afterward.If you've added Home Assistant to the home screen, you have to first remove it from home screen, otherwise, this HTML5 app will show up instead of a browser. Using it would prevent Home Assistant to redirect back to the `Google Assistant` app.
## {% linkable_title Setup %} You need to create an API Key with the [Google Cloud API Console](https://console.cloud.google.com/apis/api/homegraph.googleapis.com/overview) which allows you to update devices without unlinking and relinking an account (see [below](#troubleshooting-the-request_sync-service)). If you don't provide one, the `google_assistant.request_sync` service is not exposed. It is recommended to set up this configuration key as it also allows the usage of the following command, "Ok Google, sync my devices". Once you have set up this component, you will need to call this service (or command) each time you add a new device that you wish to control via the Google Assistant integration. 1. Create a new project in the [Actions on Google console](https://console.actions.google.com/). 1. Add/Import a project and give it a name. 2. Click on the `Home Control` card, select the `Smart home` recommendation. 3. Create an Action, under the build section. Add your Home Assistant URL: `https://[YOUR HOME ASSISTANT URL:PORT]/api/google_assistant`, replace the `[YOUR HOME ASSISTANT URL:PORT]` with the domain / IP address and the port under which your Home Assistant is reachable. 4. Click `Done`. Then click on `Overview`, which will lead you back to the app details screen. 2. `Account linking` is required for your app to interact with Home Assistant. Set this up under the `Quick Setup` section. 1. Leave it at the default `No, I only want to allow account creation on my website` and select Next. 2. For the `Linking type` select `OAuth` and `Authorization Code`. 3. Client ID: `https://oauth-redirect.googleusercontent.com/`, the trailing slash is important. 4. Client Secret: Anything you like, Home Assistant doesn't need this field. 5. Authorization URL (replace with your actual URL): `https://[YOUR HOME ASSISTANT URL:PORT]/auth/authorize`. 6. Token URL (replace with your actual URL): `https://[YOUR HOME ASSISTANT URL:PORT]/auth/token`. 7. Configure your client. Add scopes for `email` and `name`. 8. Do **NOT** check `Google to transmit clientID and secret via HTTP basic auth header`. 9. Testing instructions: Enter anything. It doesn't matter since you won't submit this app.
3. Back on the overview page. Click `Simulator` under `TEST`. It will create a new draft version Test App. You don't have to actually test, but you need to generate this draft version Test App.
4. If you haven't already added the component configuration to `configuration.yaml` file and restarted Home Assistant, you'll be unable to continue until you have.
5. Open the Google Assistant app and go into `Settings > Home Control`.
6. Click the `+` sign, and near the bottom, you should have `[test] your app name`. Selecting that should lead you to a browser to login your Home Assistant instance, then redirect back to a screen where you can set rooms for your devices or nicknames for your devices.
If you've added Home Assistant to the home screen, you have to first remove it from home screen, otherwise, this HTML5 app will show up instead of a browser. Using it would prevent Home Assistant to redirect back to the `Google Assistant` app.
7. If you want to allow other household users to control the devices: 1. Go to the settings for the project you created in the [Actions on Google console](https://console.actions.google.com/). 2. Click `Test -> Simulator`, then click `Share` icon in the right top corner. Follow the on-screen instruction: 1. Add team members: Got to `Settings -> Permission`, click `Add`, type the new user's e-mail address and choose `Project -> Viewer` role. 2. Copy and share the link with the new user. 3. New user clicks the link with their own Google account, it will enable our draft test app under their account. 3. Have the new user go to their `Google Assistant` app to add `[test] your app name` to their account. 8. If you want to use the `google_assistant.request_sync` service, to update devices without unlinking and relinking, in Home Assistant, then enable Homegraph API for your project: 1. Go to the [Google API Console](https://console.cloud.google.com/apis/api/homegraph.googleapis.com/overview). 2. Select your project and click Enable Homegraph API. 3. Go to Credentials, which you can find on the left navigation bar under the key icon, and select API Key from Create Credentials. 4. Note down the generated API Key and use this in the configuration. ## {% linkable_title Configuration %} Now add the following lines to your `configuration.yaml` file: ```yaml # Example configuration.yaml entry google_assistant: project_id: someproject-2d0b8 api_key: [a Homegraph API Key generated for the Google Actions project] exposed_domains: - switch - light - group entity_config: switch.kitchen: name: Custom Name for Google Assistant aliases: - bright lights - entry lights light.living_room: expose: false room: living room ``` {% configuration %} project_id: description: Project ID from the Actions on Google console (looks like `words-2ab12`) required: true type: string api_key: description: Your API key. required: false type: string expose_by_default: description: "Expose devices in all supported domains by default. If set to false, you need to either expose domains or add the expose configuration option to each entity in `entity_config` and set it to true." required: false default: True type: boolean exposed_domains: description: List of entity domains to expose to Google Assistant. required: false type: list entity_config: description: Entity specific configuration for Google Assistant required: false type: map keys: '`