What you need
- The ChatGPT desktop appMac, Windows or Linux. Switch from ChatGPT to Codex, then start a New chat.
- A ChatGPT planFree and Go get only the small model (Luna), still rolling out. Plus is the cheapest plan with everything.
- One folder for your businessCodex works on the files inside the folder you open.
Before you start
Never paste passwords, bank details or customer data into a prompt.
Keep the default permissions, where Codex asks before risky steps. Never give it full access on your main computer.
Computer Use may not be available in every country yet. Scheduled tasks run only while your computer is on.
1. Clean up a messy folder
Open any messy folder and paste this. Codex shows its plan and waits for your OK.
Organize this folder. Make subfolders for Screenshots, Photos, Documents, Bills and Other, and move each file into the right one. Rename the screenshots by date. Show me the plan first and wait for my OK before moving anything.
2. Tell it about yourself once
AGENTS.md is a notes file Codex reads before every task. Type /init, or paste this with your own details.
Create an AGENTS.md in this folder. About me: I'm Arjun, a final-year engineering student in Hyderabad who also makes YouTube videos. Write in simple English, keep answers short, use rupees for prices, and always ask me before deleting any file.
3. Images, built in
Plus and above. Images use your limit 3 to 5 times faster.
Create 3 LinkedIn banner options for me (1584 x 396). Clean, modern, dark background, with the line "Building simple tools, explaining tech in Telugu". Save them in a folder called Banners.
4. Research in the browser
Use the browser to find the 3 best laptops under ₹80,000 for video editing in India right now. Make a comparison table with price, processor, RAM, screen and a link for each, and tell me which one you'd pick and why.
5. Computer Use
Put a text file of your expenses in the folder first. Codex asks permission for each app.
@Numbers Create a new spreadsheet called Monthly Budget using expenses.txt from this folder. Add a total row and a pie chart of where the money goes.
6. Save a task as a skill
$skill-creator Make a skill called linkedin-post. When I give it an article link, read it and write a LinkedIn post in my style from AGENTS.md: a strong first line, 5 short lines, one question at the end, no hashtags.
7. A scheduled morning brief
In Scheduled, create a task called Morning AI brief, every day at 8 AM, with this prompt.
Find the 5 most important AI news stories from the last 24 hours. Give each one in one line with a link, and add one line on why it matters to a student or creator.
8. The commands you need
- /initCreates the AGENTS.md notes file
- /planPlans first, builds after you approve
- /goalKeeps working until the job is done
- /reviewChecks the work before you keep it
- /statusShows how much usage is left (limits reset every 5 hours)
- $Runs one of your skills
9. A resume becomes a website
Put your resume in the folder as resume.md (or rename it in the prompt). Type /plan, paste this, approve.
Turn resume.md into a one-page personal portfolio website in a single index.html file, no frameworks. Use only the facts in the resume and don't invent anything. Make it look premium: dark mode, one accent colour, my name big at the top with a one-line intro and Contact and Projects buttons, skills as tags, projects as cards with the numbers highlighted, experience as a timeline, then education, achievements and contact. Add smooth scrolling and subtle fade-in animations, and make it look great on a phone. When it's done, open it in the browser so I can see it.