The principle
Why hand a repetitive task to an agent?
Because a task you redo identically every week doesn't call for judgement — it calls for consistency. A software agent reads your mail and your files, opens the software you already use, and does the data entry for you. You keep the review and the decision. It isn't one more tool to learn: it plugs into the one you have.
It isn't another piece of software
This is the most common confusion, and a fair one. Software asks you to change how you work so you fit into its way of doing things. An agent does the opposite: it learns yours.
Software
- You switch tools, and train the team
- You type into a new interface
- It waits for someone to open it
- It covers a domain, its own way
- Your habits adapt to it
An agent
- It uses the tools you already have
- It types for you, where you used to type
- It starts on its own: on a schedule, or when mail arrives
- It does one precise task — yours, with your rules
- It adapts to your habits
In practice: your bookkeeper still opens Erplain in the morning. The difference is that yesterday's draft invoices are already there, prepared from the delivery notes that arrived by email overnight. All that's left is to read them and approve.
The maths, without rounding in my favour
I would rather set out the arithmetic than promise spectacular savings. It fits on one line:
documents per month × minutes of entry per document × loaded hourly cost
Take a small business handling 130 delivery notes a month, at roughly 8 minutes of entry each — multi-line notes, copied one item at a time — by someone whose loaded hour costs €25:
The installation pays for itself in a little over six months. From the second year there is only the maintenance left to subtract, so the gap widens on its own. Over five years that one agent represents about €16,900 kept inside the business, and more importantly 1,040 hours no longer spent copying — six months of full-time work.
These are orders of magnitude, not a promise. Your numbers aren't mine, and I will run them with you before quoting anything.
What matters as much as the money
The business owners who call me back almost never mention the euros first. They mention these four things:
- It's done the same way every time. An agent doesn't get tired on a Friday evening, doesn't skip a line and doesn't have off days. Consistency is what a person delivers least well on a boring task — that isn't a flaw, it's being human.
- The task no longer depends on one person. When whoever "knows how to do it" is on holiday or leaves, the work carries on. What they knew is written into the agent's rules, not only in their head.
- The work is already done when the day starts. The agent runs overnight or early morning. Your team arrives to drafts to review, not a pile to type.
- Copying errors disappear. Not errors of judgement — those stay your job. But a figure carried wrongly from a file into a system: that stops happening.
What an agent will not do
The limits aren't disclaimers written afterwards. They're in the code from the first line, and I don't remove them, even on request.
- It finalises nothing and sends nothing. It prepares drafts. Approval and sending stay with a person.
- It never guesses. A missing value stops the line concerned and is reported to you. An agent that invents rather than stop is a dangerous agent.
- It doesn't modify your original files. They're read, never rewritten.
- It doesn't replace your judgement. Exceptions, edge cases, client relationships: those stay yours. The agent takes the mechanical part, the part nobody enjoys.
- It doesn't lock you in. The agent runs on your machine, and you can run it again without me.
Maintenance isn't optional
This is where I'd rather be blunt now than in six months.
An agent leans on tools it doesn't own: your business software, your mail, your file formats. Those tools change. The day your software vendor moves a button or reworks a step, the agent trips. That isn't a manufacturing defect — it's the nature of a tool that drives another tool.
The €120/month covers exactly that: adapting when your vendor changes something, fixes, and updates pushed to your machine. They are cryptographically signed — your machine refuses any code that doesn't come from my key.
Where we start
Three steps, and you can stop at the end of the first having committed to nothing.
| 1. You show me the task | Your real documents, your tools, your rules. I tell you straight whether it can be automated, and whether the maths works in your favour. Free, no commitment. |
|---|---|
| 2. We write down the scope | What the agent does, what it doesn't, what stays with you. In writing, before the first line of code. |
| 3. I build, you use it | One person to design, install and maintain it. The first month is refunded if the agent doesn't do what was written. |
First conversation free. Send me three of your real documents: I'll show you what it looks like, and tell you whether it's worth it.
Read on
| The invoicing agent | The case in detail: from delivery notes received by email to drafts inside Erplain, with a demonstration. |
|---|---|
| The agents HQ | What happens once you have several: one screen to run them all. |
| Frequently asked questions | Security, data, how long installation takes, and what happens if I disappear. |
| Tarifs et rentabilité | Pricing tiers and an interactive calculator that runs on your own figures — this page is in French. |