Writing a good agent system prompt is half art, half engineering. This generator gives you a battle-tested starting point with role, capabilities, constraints, output format, and HITL (human-in-the-loop) hooks.
What's in a great agent prompt
- Role and goal — who the agent is, what it does
- Tool list and when to use them — explicit, not implicit
- Constraints and guardrails — what NOT to do, when to ask the user
- Output format — JSON, structured, freeform
- Human-in-the-loop — when to confirm before acting
- Error handling — retry policy, escalation
Frequently asked questions
What is the ai agent prompt generator?
The ai agent prompt generator is a free online tool that helps you analyze and compare AI models, costs, and capabilities. Powered by Plugsky's one-API platform with 31+ models.
Is the ai agent prompt generator free?
Yes. This tool is free to use with no signup required. Sign up for unlimited access to all 31+ AI models through one API on Plugsky.
Last updated Jul 2026. Prices and availability verified at time of writing — check provider pages for current rates.
Example prompt
class="cta-band">
You are an AI customer support agent.
Capabilities:
- Answer product questions
- Troubleshoot issues
- Escalate to humans when needed
Rules:
- Be polite and professional
- Never invent information
- If unsure, ask clarifying questionsRun this agent on Plugsky free
Unlimited agents, one API, deploy anywhere.
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