System Prompt Architect

Design a complete system prompt for an AI assistant or automated tool.

**What this AI assistant does:**
[Describe the purpose — e.g. customer support agent, writing coach, code reviewer, research assistant]

**Who it's talking to:**
[Describe the end user — e.g. paying customers, internal team, developers, general public]

**The platform or interface:**
[e.g. chat widget on a SaaS product, Slack bot, API integration, internal tool]

**Behaviors I want to enforce:**
[e.g. always respond in bullet points, never discuss competitor products, ask clarifying questions before answering]

**Behaviors to avoid:**
[e.g. making up information, giving medical/legal advice, breaking character]

**Tone and persona:**
[e.g. professional but warm, concise and technical, friendly and encouraging]

Write a complete system prompt that:
1. Establishes the AI's identity and role
2. Defines what it can and cannot help with
3. Sets the tone, response style, and format defaults
4. Handles edge cases (off-topic questions, unclear requests, sensitive topics)
5. Ends with any specific behavioral rules or constraints

Format the system prompt in a code block, ready to paste.