To create ads on Facebook, you'll want to use the Facebook Ads API. This API is JSON based and pretty much any Graph API client library should be able to connect to it. One caveat is you'll need to request access to the Ads API, which might take a bit of time to get reviewed and enabled. The documentation for this API is here:
https://developers.facebook.com/docs/ads-api/
The Atlas API is primarily used to serve display ads and measure their performance. It doesn't sound like that's your primary use case here.