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Hermes Agent for business owners: what it is, what it costs, how to start

Hermes Agent is a free, open-source AI agent from Nous Research. It runs on your own computer, works with your files, and remembers what it learns from you.

This page is for an owner who keeps hearing the name and wants a plain answer. No code. No developer words that go unexplained.

What it is, in one picture

A chatbot is a phone call with a smart stranger. You describe your files; it guesses. Hermes is a helper at your desk. It opens the folder, reads the invoice, and writes the reply in the file you point at.

That difference comes from the harness around the model. The model is the engine. Hermes is the rest of the car: tools, memory, a work loop, and permission checks. You can read more in What is an agent harness?

Is Hermes Agent free?

Yes. The software is MIT licensed, which means you can download it, use it for your business, and never pay Nous Research a cent for the app itself.

What you may pay for is the model that thinks inside it:

Hermes Desktop or the terminal install?

Pick Hermes Desktop. It is the same agent inside a normal window with a chat box, a file browser, and a preview browser.

The terminal version exists for people who already live in a terminal. If that sentence means nothing to you, you do not need it.

Your first hour

  1. Install Hermes Desktop and open it. The first screen asks for a model provider. Choose OpenRouter or Nous Portal, or choose provider later if you want to try a local model.
  2. Make a folder called hermes-test and copy three or four files into it. A price list, a few emails saved as text, a photo of a form. Nothing private yet.
  3. Point Hermes at that folder. Type one clear job in the chat box: "Read the emails in this folder and draft a reply to each one in my voice. Save the drafts as new files. Do not send anything."
  4. Watch it work. It will list what it read, show what it wrote, and ask before it does anything that changes a file outside the folder.
  5. Read the drafts. Fix one by hand, then tell Hermes what you changed and why. It keeps that as a rule for next time.

For more on wording the job, read How to talk to an AI agent.

What it can reach

What to be careful about

Hermes can run commands on your computer. By default it asks before anything risky. There is a switch that turns the asking off. Leave it off. An agent that acts without asking is a bad fit for a business machine.

Keep it inside one folder at first. Give it copies, not originals. Check the diff it shows before you approve a change. Memory is helpful, but it is not a system of record: keep your real rules in a text file in the working folder.

How it compares

Codex from OpenAI and Claude Code from Anthropic do the same kind of work with a paid subscription and a tighter fit to one company's models. Hermes is the open one: any model, your machine, your data. The trade is that you set up the model yourself. Read Codex vs Claude Code vs Hermes for the side by side.

Where this leads

Once you have seen an agent draft ten replies from your inbox, the question changes from "what is AI" to "which of my chores go first." The guides by industry walk through those chores one at a time. If you want a person to look at your week with you, send us a message and we will tell you where we would start.

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