Developer Companion

System Prompt Generator

Build highly resilient system instructions. Establish AI personas, role constraints, formatting rules, and secure safety guidelines for custom API structures or custom GPT models.

System Persona / Role Name *

Deployment API Environment

Preferred Format Style

Forbidden topics / Core Off-limits

Primary Objective of the Assistant *

Core Behavioral Rules / Context Boundaries *

Guardrail Output

🎭 Demo Mode

Generated Guardrails Board

Declare assistant personas, goals, boundaries, and formatting, then click "Generate" to review your structured prompt here.

Drafting system instructions and guidelines...