This page will help you get started with Posts API.
The Bluebeam Atlas Posts API is available at the following url:
https://atlasapigateway.bluebeam.com/graphql
$http.post('https://atlasapigateway.bluebeam.com/graphql', data).success(successCallback);
Concepts to familiarize yourself with:
Queries
Read-only requests for data.
Mutations
Write operations on data, think Create, Update, Delete on a REST API.
Types
The Posts API is a typed API, meaning that each all data that is returned has a type, either a scalar type (like string, boolean, int, float, datetime, etc) or a Posts API specific type (like Post, Tag, Layer, or Attachment).