API version v3 is available as GA as part of the 21.10.1 release on October 08, 2021.
The Bluescape APIs give you access to a set of secure organization and content management features for use in your own environment. You can use RESTful APIs that are organized around the main resources from the Bluescape wall and web interfaces.
You can access the REST reference by selecting one of the openapi files linked under REST API reference on the left navigation.
The reference page for v3 gives you access to the REST and GraphQL APIs.
We intend for this reference to contain all essential information application developers require to successfully build integrations with the Bluescape APIs. Please let us know if something is missing.