Just mastered the 10 essential commands for beginners using CODEX, sharing in plain language to save you two hours of exploration

1⃣ /init First time use, set up onboarding, clearly define house rules (use pnpm or npm, which directories to avoid)
2⃣ /status If it feels slower, check status first—look at model/permissions/remaining context
3⃣ /model Swap to a stronger model for big tasks, a faster model for small tasks—don't always use the expensive one to waste credits
4⃣ /permissions Beginners should start with read-only or inquiry mode—don't let it modify code without your approval
5⃣ /plan Before acting, ask it to come up with a plan—use this especially for larger tasks to avoid random changes
6⃣ /mention If an error points to a specific file, call it out directly—prevent it from getting lost in tens of thousands of lines of code
7⃣ /diff Don't trust its verbal summaries—only look at code changes, develop the habit of not submitting without reviewing diffs
8⃣ /review After writing, let it review itself—check for memory leaks, logical bugs, missing tests
9⃣ /compact When chatting becomes slow, compress history—keep only core conclusions and continue working
🔟 /resume Continue from yesterday's work today—no need to re-explain the background
It's recommended to bookmark this; when using, just flip through. Once you get hands-on, you'll find these 10 commands cover 90% of daily scenarios