How /consensus works 3-stage arbiter-mediated convergence loop - up to 5 rounds STAGE 1 - PARALLEL VERDICTS Claude posts a blind verdict, then GPT + Gemini + Grok review the plan in parallel. Claude (blind) Writes own verdict + critical issues before seeing externals GPT (Codex) APPR / RC / REJECT + critical issues Gemini APPR / RC / REJECT + critical issues Grok (xAI) APPR / RC / REJECT + critical issues GUARD - Blind verdict Claude posts its vote BEFORE dispatching to externals. Locked in the transcript. Stage 1 answers fan out as anonymized peers STAGE 2 - BLIND CROSS-REVIEW (CONDITIONAL) Each external rates the OTHER 2 anonymized answers: viable or not-viable + category. Fires R1 always; R2+ on Stage 1 divergence OR previous round had an accepted not-viable issue. GPT reviews Response A: viable / not-viable Response B: viable / not-viable (its own answer excluded) Gemini reviews Response A: viable / not-viable Response B: viable / not-viable (its own answer excluded) Grok reviews Response A: viable / not-viable Response B: viable / not-viable (its own answer excluded) GUARD - Peer review Identity stripped (best-effort). Not-viable becomes a candidate issue for S3. Stage 1 verdicts + Stage 2 candidate issues STAGE 3 - ARBITER ADJUDICATION Claude reconciles everything and decides: accept, dismiss, or defer each issue. Then revises the plan. Claude (arbiter) Reads: Stage 1 verdicts + Stage 2 issues + own blind verdict from Stage 1. For each issue: accept - dismiss (with reason) - defer Revises plan if any issue accepted. Records dismissed and deferred issues in the final report. Converged? all responding externals APPR + 0 accepted issues remain + Claude adjudicates APPR YES CONVERGED GUARD - No self-approval Claude's vote alone never converges a round. At least 1 external APPR. GUARD - No silent dismissal Every dismissed issue ships with a one-line reason in the report. NO - next round Up to 5 rounds (hard cap) Stage 2 cross-review pattern adapted from karpathy/llm-council - Stage 2 skipped when /consensus runs with sandbox: workspace-write. /ask-* commands run a single Stage 1 + Claude synthesizer (lighter version - external advises, Claude owns the answer).