The JSON RPC API

If you’re looking to write a frontend for Cardboard, you’ll need to be familiar with the JSON RPC call and response API it uses.

JSON, JSON RPC, and JSON Schema

If you’re completely unfamiliar with JSON, JSON RPC, or JSON Schema, don’t worry too much. By design, they’re all fairly simple.

You should be somewhat familiar with the json module in the Python standard library. For the rest, if you try to carefully follow the format of the method calls below, you shouldn’t need to know much more. If you’re not using Python, whatever language you’re using likely has a JSON library written for it.

If you insist on knowing more, you can take a quick glance at the official specification for JSON RPC 2.0, or the official specification for JSON Schema Draft 3.

Communication with Cardboard involves listening for and responding to requests from the game engine. The types of requests and responses are divided into a number of different namespaces.

Tip

Each request and response object below is described by a JSON Schema object.

Namespaces

Game