> For the complete documentation index, see [llms.txt](https://learn-with-nathan.gitbook.io/learnwithnathan/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn-with-nathan.gitbook.io/learnwithnathan/ai-concepts/system-prompt.md).

# System Prompt

A system prompt is the initial instruction given to the AI to set its behavior, tone, or focus for the session.

**Detailed Explanation:**

* **Purpose:** Guides the AI in adopting a specific persona or approach. For example, "You are a helpful and professional customer service representative."
* **Flexibility:** Can include detailed instructions about tone, formality, or response structure.
* **Applications:** Customer service, tutoring, creative writing, or technical support.

**Example:**\
System Prompt: "You are an enthusiastic tutor specializing in math. Explain concepts in simple terms."