How to write effective system prompts
A system prompt defines the persistent behaviour of an AI tool: its role, its constraints, its output format, and what it does when inputs are ambiguous. A well-written system prompt means every use of the tool produces consistent, reliable output. This guide covers the design principles and common mistakes.
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Free guide. Build a custom AI tool with well-designed system prompts in four weeks with the Torvi PM or Ops track. Founding rate €200.
What's covered
- 1System prompt components: persona, task scope, output format, constraints, and exception handling
- 2Worked examples: system prompts for a meeting notes tool, a requirements generator, and a reporting assistant
- 3Testing guide: how to evaluate a system prompt across edge cases before putting it in a tool
- 4Iteration approach: how to improve a system prompt without breaking what already works
Who this is for
Professionals building custom AI tools and anyone who wants their AI workflows to produce consistent output across different users and inputs.
FREE DOWNLOAD
Get How to write effective system prompts
Free guide. Build a custom AI tool with well-designed system prompts in four weeks with the Torvi PM or Ops track. Founding rate €200.
Free templates
Guides explain the approach. Templates give you the starting point. Browse the free library.