Once you have the configuration requirements, you are ready to set up a client library to handle Google Ads API calls. Since each client library is configured differently, follow the instructions linked to below for your particular programming language.
Configure client library with OAuth2 credentials
Java
.NET
PHP
Python
Ruby
Verify your configuration
You should now be able to make calls to the Google Ads API. We have provided code
examples in each client library. Choose a simple example to get up and running
quickly, for instance GetCampaigns).
If you encounter issues, please diagnose your OAuth2 credentials with Google Ads Doctor and review the preceding steps. You can also consult the Troubleshooting guide for tips on debugging common issues.