For technical discussions with developers and members of the API team, visit the Doubleclick Ad Exchange Buyer API Forum.
For announcements on upcoming changes, follow the Google Ads Developer blog.
AdX Buyer chat support is available where you can speak to a troubleshooting support specialist (English only) 24/5 to get product support. Note chat does not provide technical API or client library support. To access visit the AdX Buyer Help Center and click on Contact Us then Ad Exchange.