EXPERIMENTAL WORKBENCH
Build an environment plugin.
Describe an interactive world. Codex builds it inside an isolated workspace; ArenaOS validates every lifecycle and replay contract before you can register it.
CODEX KEY REQUIRED
Checking model…SERVER-SIDE KEYNETWORK OFF IN BUILD WORKSPACEConnect Codex to start building
Add OPENAI_API_KEY to .env.local, then restart pnpm dev. The key never enters Next.js or generated workspaces.
01 / CREATIVE BRIEF
Describe the world.
Nothing reaches the ArenaOS registry until every validation gate passes and you approve it.