Structure professional AI system prompts with custom instructions, tool definitions, XML tags, role definitions, constraints, and output formats for ChatGPT, Claude, and Gemini agents.
🚀 Launch Free Tool →✅ Role, goal & persona definition
✅ XML tag structure builder
✅ Tool/function call definitions
✅ Constraint & guardrail editor
✅ Export to JSON or plain text
A system prompt is the hidden instruction you give an AI before the conversation starts. It defines the AI's persona, capabilities, constraints, and response format.
The system prompt is set once by the developer to configure the AI's behavior. The user prompt is what the end user types each time they chat.
Yes! This tool generates system prompts compatible with ChatGPT Custom GPTs, Claude Projects, Gemini Gems, and any OpenAI API application.