Codex Skill Guide Running a Task 1. Ask the user (via ) which model to run: or . 2. Ask the user (via ) which reasoning effort to use: , , or . 3. Select the sandbox mode required for the task; default to unless edits or network access are necessary. 4. Assemble the command with the appropriate options: - - - - - - 5. When continuing a previous session, use via stdin. IMPORTANT : When resuming, you CANNOT specify model, reasoning effort, or other flags—the session retains all settings from the original run. Resume syntax: 6. Run the command, capture stdout/stderr, and summarize the outcome fo…