Settle team disagreements with a debate of AI agents in Discord

MD. Tanzimur Rahman and three classmates kept arguing over decisions such as which project to build or which field to study, so for a hackathon they built Debate Arena inside the Discord channel they already used. Seven agents run on a local Switch server on their team lead's Mac, all on Codex signed in through ChatGPT, each with its own role instructions. A moderator gathers goals and constraints and fixes two options, a scout finds sources with URLs, two advocates argue each side, a coach checks prerequisites, a fact-checker opens the cited pages and flags unsupported claims, and a judge scores both options against a rubric. The moderator then opens a ballot. Only verified humans can vote, and a 'More info' result triggers one more evidence pass and a second ballot.

Test cases ran end to end from a Discord message to a final report attached as Markdown. In one test the vote split 1 to 1 and the system left the decision open rather than picking a winner. The first full case stalled because the scout wrote its handoff as plain text; switching to Switch's targeted message action fixed it. A revoked Codex sign-in broke each agent's separate session copy, usage limits stopped some cases midway, and some handoffs leaked internal stage labels into the channel. The team does not report how often it changed their decisions.

Test one agent, then a two-agent handoff, before building the full chain: a thread appearing in Discord only proved the first part of the path worked. Agents never count as votes, which is the point of the design. It is a hackathon build tested by its makers, and the server only works while the Mac stays on.