I just created an assistant to write better system prompts (to leapfrog the first few minutes of setting up a new agent/loop).

Try it here: https://www.tramann-projects.com/MagicPromptWriter/index.php

example for the instruction:

I need a quality assurance assistant. Based on the users input he should answer with a table reporting anomalies in the production.

example for the user prompt:

Production Line: A12 Date: 2025-07-14 Shift: Night Total Units Produced: 5,200 Defective Units: 180 Average Cycle Time: 56 sec Standard Cycle Time: 48 sec Downtime: 45 minutes Expected Downtime: ≤ 15 minutes Machine Temperature Spike: Yes (Exceeded 90°C for 10 minutes) Operator Notes: "Machine slowed down mid-shift. Restarted once."

In my experience so far, the following prompting format for system prompts works best:

- Set up the role of the AI/LLM. - State the task. - Explain the high-level plan (and then break it down into sub-steps if needed). - Add important notes to keep in mind (if needed). - Tell how to structure the output/feedback. - Provide an example output of what is expected <- this one really, really increases output quality

And this is also what this assistant does, if you should have additional ideas for further prompt improvement, let's start a discussion in the comments : )