Build Your First AI Employee

Difficulty: Intermediate · Estimated time: 20 min

What You'll Learn

What a Claude "agent" actually is, why it's a technique rather than a product feature, and how to turn one task you do over and over into a reusable specialised role.

Why This Matters

Every time you open a blank chat and re-explain who you are, what you need, and how you want it formatted, you're paying a setup tax. Do that for the same task twenty times a month and you've written the same briefing twenty times. An agent is that briefing, written once, properly, and reused every time the task comes up.

The Concept

An agent, in this sense, is not a separate Claude product. It's a well-structured, reusable instruction set that makes Claude reliably perform one specific job the same way every time — the same role, the same standards, the same output shape.

You already have everywhere to put one. From Level 3, you know two homes for it:

If your organisation uses a different platform with its own system-prompt field, the same instructions drop in there too. The agent is the instructions, not the container.

Think of it as the difference between briefing a generalist assistant from scratch each morning and having a specialist on the team who already knows the job.

Step-by-Step

Example

Task: a first-draft email responder for routine client questions.

Role: "You are a first-draft assistant for client email replies. You draft responses for a human to review and send — you never send anything yourself."

Input the reader supplies: the incoming client email, plus a short note on the desired tone (standard, apologetic, firm).

Output: a complete draft reply, subject line included, flagged with a bold DRAFT — REVIEW BEFORE SENDING label at the top, under 150 words unless the question needs more.

Run a real client email through it, check the draft against what the reader would actually send, and adjust the instructions where it missed the mark.

Try This

Pick your own recurring task right now and write the one-sentence job description plus a one-line role definition for it. Don't build the full instruction set yet — just these two lines. You'll use them in the next guide.

Copy This

AGENT: [SHORT NAME FOR THE ROLE]

JOB IN ONE SENTENCE:
[WHAT THIS AGENT DOES, FOR WHOM, FROM WHAT INPUT]

ROLE:
You are [SPECIFIC ROLE], responsible for [SPECIFIC JOB].
You are not responsible for [ANYTHING DELIBERATELY OUT OF SCOPE].

INPUTS I WILL GIVE YOU:
- [INPUT 1]
- [INPUT 2]

OUTPUT FORMAT:
[EXACT SHAPE — HEADINGS, LENGTH, TONE, ANY REQUIRED LABELS]

SAVE AS: [PROJECT NAME] or [SKILL NAME]

Common Mistakes

Level-Up Tip

The moment a tested instruction set stops needing edits after a run, save that version somewhere named and dated — even just in a notes doc — so you can tell later whether a change you made improved it or broke it.

Action Checklist

Next Guide

17 — Agent Instructions That Actually Work, where you'll build out the role, objectives, constraints, inputs and output spec properly.