This page outlines how to create your own set of API keys for use with the YouTube add-on.

1. Sign in at https://console.developers.google.com/

NOTE: youtube.com/activate and google.com/device go to the same place.

The final step is to add your keys to the YouTube add-on, this can be done using one of the following methods.

Configure the add-on:

• Settings -> API -> Enable personal API keys = ENABLED
• Settings -> API -> API Key = API KEY HERE
• Settings -> API -> API Id = CLIENT ID HERE
• Settings -> API -> API Secret = CLIENT SECRET HERE

Configure the add-on:

• Settings -> API -> Enable personal API keys = ENABLED
• Settings -> API -> API Key = BLANK/EMPTY
• Settings -> API -> API Id = BLANK/EMPTY
• Settings -> API -> API Secret = BLANK/EMPTY

Enable the api configuration page, to enable this go to the Settings - API and enable Enable API configuration page

You should then be able to update your keys by visiting http://<IP of Kodi device>:<port>/youtube/api
The port used is Settings - HTTP Server - Port which by default is 50152

You can bookmark the results page for quick updates in the future. Be sure to disable this feature after use.

Configure the add-on:

• Settings -> API -> Enable personal API keys = ENABLED
• Settings -> API -> API Key = BLANK/EMPTY
• Settings -> API -> API Id = BLANK/EMPTY
• Settings -> API -> API Secret = BLANK/EMPTY

Shutdown Kodi

Manually edit userdata/addon_data/plugin.video.youtube/api_keys.json
Note: With this method you'll need to remove .apps.googleusercontent.com from your Client ID

{
    "keys": {
        "developer": {}, 
        "personal": {
            "api_key": "API KEY HERE", 
            "client_id": "CLIENT ID HERE", 
            "client_secret": "CLIENT SECRET HERE"
        }
    }
}

During the add-on Sign in process you'll be asked to Connect a device twice.

The second time you Connect a device, you will be prompted with:

This app isn't verified
This app hasn't been verified by Google yet. Only proceed if you know and trust the developer.

From there clicking Advanced and Go to <your project name> (unsafe) allows you to complete the process.

Note:
If you are unable to complete this, you may also need to enable "Less secure app access" which is disabled by default.
Once logged into your Google account, visit https://myaccount.google.com/lesssecureapps