ultraplan-codex
Codex UltraPlan
Deprecated for GPT-5.6 Sol. Use native Codex Plan Mode for grounded, decision-complete implementation plans. Do not use this package for new work.
Overview
Run a read-only, multi-phase implementation planning session before coding. Produce a concise, file-path-grounded .ultraplan/plan.md that can be executed without guessing.
Activation
Treat the user's invocation text as the planning task.
Enter deep planning mode. This is not quick planning: investigate the codebase, interview the user only for non-discoverable decisions, synthesize one recommended approach, and validate the plan before presenting it.
Read-only rule: Do not create, modify, or delete files except .ultraplan/plan.md while planning. When invoked by deep-planning-codex, .deep-planning/implementation-plan.md and .deep-planning/state.md are also allowed planning artifacts. Do not install dependencies, run migrations, commit, push, format, or edit implementation files. Read commands, searches, tests, and build checks are allowed when they improve the plan and do not intentionally modify tracked source.