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Software & DevOpsAny

Build a project management tool with a 24-hour agent run

Ran a Cursor agent continuously for 24 hours to build a project management tool; the app fully works but is not production ready.

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Use case overview

Ran a Cursor agent continuously for 24 hours to build a project management tool; the app fully works but is not production ready.

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Reported experience

  1. What they did

    The agent ran Sonnet 4.5 from the Cursor CLI in a continuous loop for 24 hours, receiving only the prompt "build a project management tool" and almost no upfront context. It tracked its own progress and iterated autonomously until it determined the task was complete. The human started the loop but added no further input during the run.

  2. How it went

    The resulting app fully worked as a project management tool. It was not production ready, though the code structure and navigation proved better than expected.

  3. Worth knowing

    Almost no initial context was supplied, showing how far a simple looped prompt can go on its own.

Example prompts

Try with Cursor
Build a project management tool in this repo with [features: tasks, boards, assignees, due dates] using [tech stack]. Work in stages, run the tests and the app as you go, and keep a running list of what works and what is missing. Stop when the core flows work end to end and give me a summary of known gaps; ask before deleting files or adding paid services.

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