ALTERNATIVE

Best Prompt-Only Agent Boundaries Alternative

Relying solely on prompts to constrain agent behavior

What is Prompt-Only Agent Boundaries?

Traditional approach of using only prompt engineering and instructions to limit agent actions and enforce security boundaries, without runtime enforcement mechanisms.

✅ What Prompt-Only Agent Boundaries does well

  • • Simple to implement
  • • No additional infrastructure

❌ Limitations for Agents

  • • Insufficient runtime boundary enforcement
  • • Vulnerable to prompt injection
  • • No hard execution limits

Why AI Agents are replacing Prompt-Only Agent Boundaries

Policy kernels like Limitrum enforce execution boundaries at runtime, providing stronger security guarantees than prompt-level controls alone

Common Use Cases

Agent safetySecurity enforcementExecution control