Seatright: A five-seat rock band of AI agents

Seatright is a software factory built on Band. Five AI agents share one Band room, set up like a rock band. Codex sings lead as the coordinator. OpenCode on bass and OMP on drums build the backend. Grok Build plays lead guitar and owns the interface. ZCode plays rhythm guitar as the independent reviewer. Inside ZCode's sandbox, Antigravity on Gemini 3.8 Flash acts as its private design critic. The video is best viewed with sound on! The owner sent one dispatch with the task, the four specifications and the stack. The band delivered all four Tablekeeper stages in 28 hours. The isolated harness passes 178 of 178 supplied checks and claims stage 4. Review changed the product. Antigravity flagged five design problems in stages 1 and 2. ZCode measured each one in a real browser before blocking on it, and Grok fixed them. Antigravity's wrong guesses never reached the room. Every coding seat runs in its own Docker Sandboxes VM, and the reviewer can read the code but never change it. We built the glue to run five different agent tools as Band seats. That includes our own launchers, a patched ZCode bridge and a health watch for dropped seats. The factory itself is generic. Only the dispatch changes from one problem to the next. Repository: https://github.com/nrynss/seatright