The Nexus Data Exchange Format (NDEF) is an Open Sound Control (OSC) namespace specification designed to make connection and message management tasks easier for OSC-based networked performance systems. New extensions to the NDEF namespace improve both connection and message management between OSC client and server nodes. Connection management between nodes now features human-readable labels for connections and a new message exchange for pinging connections to determine their status. Message management now has improved namespace synchronization via a message count exchange and by the ability to add, remove, and replace messages on connected nodes.