Store your product principles as standing rules
Turn the judgement calls your team makes repeatedly into rules Claude applies by default.
What this prompt helps you do
Project instructions encoding the principles, their rationale, and the cases where each does not apply.
When to use it
The same guidance is being given manually on every piece of work.
What to prepare
The goal, relevant source material, constraints, examples, and the decision or action this should support.
How to get a strong result
Write the exceptions alongside each principle; a rule with no stated limits gets applied where it does not belong.
How to use this prompt
Replace each placeholder with accurate context. Paste the complete prompt into Claude, review the response critically, resolve important questions, and use it as a considered input to the next decision—not as an unchecked final answer.