Let Cursor draft a project app in a 24-hour loop

A developer let Cursor work for a full day on a project tracker, and it finished with a usable but unfinished result.

Done with Cursorยท Intermediateยท Oct 2025

What they did
They opened Cursor CLI with Sonnet 4.5 and gave it a bare instruction to make a project management app. The agent then stayed on task for 24 hours, watching its own progress and making changes on its own while the human left it alone.
How it went
The finished app worked end to end for project management tasks. It still fell short of production quality, though the folder structure and navigation were stronger than expected.
Tips
This shows how much ground an agent can cover with almost no setup. Even so, plan to review polish, reliability, and any unfinished edge cases before real use.

Try it yourself with Cursor

Create a [kind of app] in this codebase with [features] on [tech stack]. Break the work into stages, verify each stage by running tests and the app, and note what is complete and what still needs work. Before you take any irreversible step, including deleting files, making payments, submitting changes, or sending anything out, stop and ask for my approval first. When the main paths all work from start to finish, summarize the remaining gaps and end the run.

Fill in the [brackets]. Agents can make mistakes, so review anything before it is sent, paid or deleted.

Read the original on x.com โ†—

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