OAuth Desktop Application Flow

This guide walks you through how to setup OAuth2 for API access using your own credentials in the desktop (installed) application flow. These steps only need to be done once, unless you revoke, delete, or need to change the allowed scopes for your OAuth2 credentials.

Step 1 - Creating OAuth2 credentials

Generate a client ID and secret by following the linked instructions, then come back to this page.

Once finished, save your client ID and client secret by going back to the credentials page and clicking the button on the right-hand side of the screen to download your credentials as a JSON file. Save that file on your machine in a location that's easy to remember, such as in your $HOME directory.

Step 2 - Adding OAuth2 credentials to configuration

Set the client ID and client secret tokens in your configuration. If you're using a google-ads.yaml file, YAML string or dict add the following:

client_id: OAUTH2_CLIENT_ID
client_secret: OAUTH2_CLIENT_SECRET

If you're using environment variables add the following to your Bash configuration or environment:

export GOOGLE_ADS_CLIENT_ID=OAUTH2_CLIENT_ID
export GOOGLE_ADS_CLIENT_SECRET=OAUTH2_CLIENT_SECRET

Step 3 - Generating a refresh token

Follow the instructions in our installation documentation to clone the library from GitHub and return to this page.
Next, navigate to the authenticate_in_desktop_application example, authenticate_in_desktop_application.py.
```
$ cd examples/authentication
```
Run this example using the command line, passing in the file path to the JSON file generated in Step 1.
```
$ ./authenticate_in_desktop_application.py --client_secrets_path=/path/to/secrets.json
```
The example will prompt you to visit a URL where you will need to allow the OAuth2 credentials to access your Google Ads account on your behalf.
- Navigate to the URL in a private browser session or an incognito window.
- Sign in with the same Google account you use to access Google Ads.
- Click Allow on the OAuth2 consent screen.
An authorization code will be shown to you. Copy and paste the verification code into the command line where you're running the authenticate_in_desktop_application.py example and press enter. The example should complete and display an offline refresh token.
```
After approving the token enter the authorization code here: ****

Your refresh token is: ****
```

Step 4 - Adding refresh token to configuration

Set the refresh token in your configuration. If you're using a google-ads.yaml file, yaml string or dict add the following:

refresh_token: OAUTH2_REFRESH_TOKEN

If you're using environment variables add the following to your Bash configuration or environment:

export GOOGLE_ADS_REFRESH_TOKEN=OAUTH2_REFRESH_TOKEN