The implementation tutorial
LEGION
Bring your superpower

Build it today — for real

Your agent is one paste away. Here's the honest, step-by-step way to get it working in about 15 minutes — on the tool you already have.

Pick your tool

No new subscriptions needed. Start on the tool you already have.

ChatGPT · recommended

Everyone has it. Free tier works. You build a pinned chat agent — paste the prompt, save it, it remembers you. About 15 minutes.

Claude / Gemini / Mistral

Same trick, free tier. Gemini lets you save it as a "Gem"; Claude lets you make a Project with your instructions.

The 7-step build (ChatGPT — works on free)

1

Open your tool

Go to chatgpt.com and log in. Free account is fine — no upgrade needed for this.

2

Start a new chat

Click New chat (top-left). This is now your agent's workspace.

3

Paste your agent prompt as the FIRST message

Copy the prompt from your Battle-Tested Card, paste it, and press send. That single message programs the agent — everything after, it works for you.

You are my referral & closing agent. I run a home-services business and my superpower is turning skeptical homeowners into signed contracts. I'll give you my past customers' names and past inquiries. For each customer, write a warm 3-line text asking if one worried friend needs my help that I'll personally take care of. For each old inquiry, write a 5-line follow-up with one opening. Keep it human. Ask me for my service, my price, and names first.
4

Save it as your agent

Click the chat's title and rename it (e.g., "My Closing Agent"). On the sidebar, pin the chat so it stays at the top. That's your agent, saved and always one click away.

5

Test it on ONE real scenario

Give it a real customer or a real objection you faced this week. Check: is it human? Is it "you"? Ask it to make it warmer, shorter, less salesy — it tunes to your voice.

6

Day 2 — feed it your business

Paste your real offers, your real prices, the phrases only you say. The more you feed it, the more it writes like you.

7

Day 3 — make it a habit

Use the pinned chat every day: this week's referrals, the follow-ups, the tough replies. Within a week it's a worker you trust.

Build it on any of these — all free

Your agent lives on the tool you already have. Paste the prompt as your first message, then pin the chat — it's your saved agent.

ChatGPT (free)Claude (free)Gemini (free)Mistral (free)
The honest fine print we tell everyone: free ChatGPT can't publish a standalone "custom GPT," but a pinned chat with your prompt IS a working agent that remembers you — and that's all you need to start today. To make it truly autonomous (send on its own, on a schedule), pair it with a free connector — Zapier free is two-step, so ChatGPT writes and the connector sends. Start free; upgrade only when the agent has already paid for itself.
⚔️ Which One Are You? →
This tutorial is a gift — free, nothing collected, no signup. Built by owners, for owners.