codex-habits

Codex instance of session-hygiene — read that skill first for the portable doctrine. This skill is only Codex mechanics.

Sources: developers.openai.com/codex/cli/slash-commands, developers.openai.com/codex/ide/slash-commands, developers.openai.com/codex/app/commands.

When

• Starting a Codex CLI, IDE, or app thread.
• After a bad run — /compact, /new, or /resume.
• Before changing what the agent may run — /permissions.

Session checks

• /status — thread ID, context usage, rate limits, model, approval mode.