We introduce two complementary OSC schemata for two contexts of use. The first is for the complete description of an OSC namespace: detailing the full set of messages each OSC-enabled system can receive or send, alongside choice metadata we deem necessary to make full use of each system's description. The second context of use is a snapshot (partial or full) of the system's state. We also relate our proposed schemata to the current state of the art, and how using these resolves issues that were left pending with previous research.