Easy Tools Lab

System Prompt Builder

Build structured system prompts for ChatGPT, Claude, and other AI models

Role Definition

Task Description

Context (Optional)

Constraints

Output Format

Tone

Examples (Optional)

Additional Instructions (Optional)

Generated System Prompt

Fill in the fields to generate your system prompt...

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About System Prompt Builder

Our System Prompt Builder helps you create well-structured system prompts for AI models like ChatGPT, Claude, and others. A good system prompt defines the AI's behavior, capabilities, and constraints, leading to more consistent and useful responses.

Key Features

Role Presets

Quick-start with common AI roles like Expert, Teacher, or Developer.

Modular Design

Build prompts section by section: Role, Task, Constraints, and more.

Output Formats

Specify how the AI should format responses (Markdown, JSON, etc.).

Tone Control

Set the communication style from Professional to Creative.

Real-time Preview

See your complete system prompt update as you build.

One-click Copy

Copy the generated prompt instantly for use in any AI platform.

How to Use

  1. 1Select a role preset or write a custom role definition.
  2. 2Describe the task you want the AI to perform.
  3. 3Add constraints to guide the AI's behavior.
  4. 4Choose output format and tone preferences.
  5. 5Optionally add examples and additional instructions.
  6. 6Copy the generated prompt and use it in your AI application.

Pro Tips

  • 💡Be specific about what the AI should and shouldn't do.
  • 💡Include examples for complex tasks to improve output quality.
  • 💡Use constraints to prevent unwanted behaviors.
  • 💡Test your prompt with different inputs and refine as needed.
  • 💡The more context you provide, the better the AI performs.

Frequently Asked Questions