Fusion Council

Fusion Council is a Claude Code plugin providing two deterministic, read-only councils that vet your work with more than one model family before you commit to it.

• fusion-plan — run before a non-trivial change. A Claude role panel (architect · skeptic · test strategist · maintainer) plus GPT-5.5 deliberate in parallel; a judge compares them on merit and synthesizes one implementation plan.
• fusion-review — run after the change. A generalist Claude seat plus GPT-5.5 review the current git diff, judged and synthesized into one findings report.

Every panelist may read the repo but never edits it — only the main session implements, and only after user approval. The GPT-5.5 seat shells out to the local Codex CLI (codex exec); when it fails, it never drops out silently — the report’s Council Coverage line says so.

Features

• Two read-only council workflows: planning (fusion-plan) and review (fusion-review)
• Cross-model-family verification (Claude + GPT-5.5), judged and synthesized into a single output
• Self-validated with a seeded-bug benchmark (EVAL.md) — the review default was chosen by data (duo: matched recall at half the noise and −21% cost)
• Real-usage telemetry measuring per-seat surviving insights, FP rate, and acceptance
• One-line install from the plugin marketplace