Build an app with the AI agent

Pyzed Design has an AI agent built in. Describe an app in plain words and it plans the work, creates the project, draws the forms, writes the Python, looks at the result, runs it and fixes what breaks, using the same editor you use. You stay in charge: every change can be undone or rejected in one click.

Goal	Time	Level	You need
An expense tracker built from a description, then improved by hand	30 minutes	Advanced · no code needed	Pyzed Design and an AI model (Claude, or any provider in the list)

What you’ll learn

• Open the Agent panel and connect a model.
• Write a request that gets a good result the first time.
• Follow the agent’s plan, and keep or reject its changes.
• Point at things with @ (a control, the form, a file) and use / commands.
• Keep improving the app by hand, with the agent at your side.

Check what it builds

An agent is a fast helper, not a guarantee. Read the code it writes, run the app and test the important paths yourself before you ship it, especially anything that touches files, money or personal data.

Steps

1. Open the panel. In Pyzed Design press Ctrl+Alt+A (or View → Agent panel). The first time it asks you to connect a model: click a provider to sign in with the browser, or All providers… for the rest. If you installed Pyzed with pip, add the agent’s extras first:

   uv

   Windows, macOS and Linux

   uv tool install "pyzed-ui[designer,agents]"

   pip

   Windows, macOS and Linux (inside your environment)

   python -m pip install "pyzed-ui[designer,agents]"

   python

   The standalone Pyzed Design app

   # nothing to install: the agent is included

   

   The Agent panel, ready for a request.

2. Ask for the app. Type /app and describe it. Say what it is for, what is on screen and what should happen; leave the “how” to the agent:

   Create an app to track my expenses. A form with date, amount, a category drop-down (Food, Transport, Home, Fun) and a note. Save adds the expense to a table below and to a JSON file next to the app. Show the total for the month at the top and validate that the amount is a positive number.

3. Follow the plan. The agent writes a Plan card above the message box and ticks the steps off: create the project, add dependencies, draw the forms, wire the events, write the handlers, take a screenshot of each form, run checks and finally run the app. Each tool it uses is a line in the thread; click one to see what it did.

   

   The agent works in the same editor: forms, code and the project update as it goes.

4. Review. When it finishes, run the app with F5 and try it. The Agent changes bar offers Reject (put every file it touched back as it was) or Keep. Ctrl+Z still undoes one change at a time.

5. Improve it, pointing at things. Select a control and ask about this, or type @ to attach the form, its code, a control or a file:

   @amount should accept a comma as the decimal separator, and the table should show the newest expense first.

   

   @ adds context: the selection, the form, its code, a control, a file or a screenshot.

6. Polish with commands. /tidy aligns the controls and evens out the margins, /look takes a screenshot of the form and improves its design, /fix checks the code and fixes what it finds, /explain walks you through the form and its handlers.

7. Take over. It is your project: open the files, change the layout by hand, write code. The agent reads what you changed in the next message, so you can switch between doing it yourself and asking.

Requests that work

Name the screens and the fields, the rules (“amount must be positive”), where data is saved, and one example of the result. Ask for one change at a time when you refine. More advice in Prompting.

Profiles

Write (the default) edits forms, code and files, and asks before it creates files or runs the app unless you turn off Ask before writing files; Ask only reads and answers; Minimal is a plain conversation with no tools. Pick one in the profile menu at the bottom of the message editor.

Next

• AI agents in the designer manual: providers, MCP servers, external agents, images.
• The AI section: the MCP server and llms.txt for agents outside the editor (Claude Code, Cursor…).
• Package your app once it is ready.