a Hermes Agent user took on a neighbour's 2005 Mustang and asked his agent to build him a Mac app to watch the car live. HermesOBD is the result, a new open-source community build by trafalger1801: a live OBD-II dashboard for macOS that talks to a Bluetooth car adapter and sends the readings to your own Hermes Agent for commentary. - live engine data: RPM, speed, coolant temperature and more - reads stored and pending trouble codes - logs every drive to CSV - sends Hermes a summary every 30 s, and Hermes comments on how the readings change - answers your questions about the data, inside the app - read-only by design: every command goes through an allowlist, no tuning, no reflashing live data and trouble codes are tested on the Mustang with an Innova 3210RS adapter.