Agent Debate is what happens before Consensus Arbiter. When two agents propose conflicting actions, debate runs a 1-to-3-round structured exchange where each side defends its proposal and critiques the other. The arbiter picks the winner from the post-debate proposals, which usually look different (and better) than the pre-debate ones.
Round 1: each agent proposes its action. Round 2: each agent critiques the other's proposal and refines its own. Round 3 (optional): final position. The number of rounds is configurable per conflict severity, quick disagreements get one round, ambiguous ones get three. The transcript is captured in the Decision Bundle for both bundle entries.
Debate is time-boxed (default 60s total). If the rounds run out without convergence, the original proposals go to Consensus Arbiter unchanged. Time-boxing prevents debate from becoming a delay tactic when the underlying incident is on the clock.
Debate transcripts land in both agents' Decision Bundles. When a postmortem reviewer asks "why did we pick this fix?", the transcript shows the alternative considered, the critique that landed, and the final position. The decision is auditable, not magical.
The page tracks convergence rate: percent of debates where both agents agreed by the final round. Convergence is good; persistent non-convergence is a tuning signal, usually one agent has stale prompts or one has access to context the other lacks. Patterns of non-convergence get flagged for prompt review.
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Debate is the cheapest way to get a multi-agent system to look like a careful team rather than two confident strangers.