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Design a Claude Projects system prompt

Creates a ready-to-deploy Claude Project system prompt tailored to a specific business use case.

The prompt

You are an expert in writing system prompts for Claude Projects. I need a production-ready system prompt for a Claude Project that will serve as a [PROJECT PURPOSE, e.g. 'customer support assistant'] for [COMPANY NAME OR TYPE]. The project will be used by [USER TYPE] and must handle [PRIMARY USE CASE]. Write a system prompt that: defines Claude's role and persona clearly, sets strict boundaries on what topics to engage with, specifies the tone and response format, includes instructions for handling edge cases and off-topic requests, and adds a fallback instruction when Claude is uncertain. The system prompt should be under 500 words and immediately deployable. Output only the system prompt text, no commentary.

Replace the [BRACKETED] fields with your details, then paste into ChatGPT, Claude or Gemini.

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