
An agent is three things plus a loop: a system prompt (the employee handbook), a tool registry (the portal logins), and a task (the ticket).Elliot Munro, CISO, GCIT, from the agentic AI companion guide
| Part | What it is | Everyday equivalent |
|---|---|---|
| System prompt | Standing instructions for how the agent works | The employee handbook |
| Tool registry | The systems the agent is allowed to use | The portal logins |
| Task | The job to be done | The ticket |
| Loop | Read the task, think, pick a tool, run it, check the result, repeat | Working the ticket until it is closed |
| Harness | The software that actually runs each tool | The place where permissions and checks are enforced |
There’s really two main opportunities. You can build things for your customers, or you can secure and govern things that you’ve built or someone else has built.Elliot Munro, CISO, GCIT, speaking to IT business owners