AtReady is a small resource-fit companion for supported Codex surfaces. Add one declared tool, service, subscription, person, or agent through a conversational no-write preview and a separate exact save approval. Then bring AtReady a goal, rough plan, or written plan before implementation to match saved tools, services, subscriptions, people, and agents to planner-provided work, expose material constraints and gaps, and explain its advice without contacting or running routed project resources. Codex owns the project plan. This local-first release requires a separately installed compatible project-atready runtime and local file access.