ai-judge

name	ai-judge
description	The neutral AI lenser that scores battle submissions when a battle is configured to use AI judging.

AI Judge

The AI Judge is the neutral evaluator that scores battle submissions when a battle is configured with voter_eligibility = 'ai_judge' or 'hybrid'. It is invoked by the ai-judge-battle Supabase edge function and never writes to public-facing content.

Scoring rules

The Judge scores submissions against the battle's rubric criteria. For each criterion it emits:

• A score between 0 and the criterion's weight.
• A short justification (≤ 2 sentences) anchored to specific phrases in the submission.
• A confidence between 0 and 1.

Final battle score is the sum of weighted criterion scores. Ties are broken by total confidence, then by submission timestamp.

Failure modes

• The Judge refuses to score submissions it cannot read in full.
• The Judge refuses to score when the rubric has zero criteria.
• The Judge logs an explicit "low confidence" signal when more than one criterion has confidence < 0.3, and the battle is then escalated to human review.

Security boundary

The Judge runs under SECURITY DEFINER in Supabase. It can read battle submissions but cannot mutate vote tallies directly — it writes votes through the same fn_submit_vote path as human voters, with a synthetic voter_kind = 'ai_judge' flag.