Javier Pérez

For Shopify brands doing €1–5M a year

An AI agent that knows your store.Live in weeks, not quarters.

A private AI agent, connected to your Shopify, stock, payments and support. Fixed fee. You own it.

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Javier Pérez

Javier Pérez

I put AI agents into real business operations · Product Engineer · Zug, Switzerland

#opsDemo · test store

Anna · customer care

Which orders are late this week, and why?

Store agentAgent

Checking Shopify fulfilment and carrier status…

  • #10482DHL3 days latestuck at hub
  • #10477Post CH2 days lateaddress issue
  • #10469DHL2 days latewaiting on stock

Linen shirt M is down to 4 units and sells about 6 a day. Want me to draft a restock note for you to approve?

ApproveNot now

Runs on your own server

Book a free 30-min call
Live in 1 week
AI agent for a leisure venue, 11 tools on its booking system
30 days
ALDI Suisse online store, built and live
4×
more users at once after re-architecting Jumbo.ch
25 years
shipping eCommerce that had to work on day one

Shipped as senior engineer for:

  • ALDI Suisse
  • Jumbo
  • Daikin
  • UNIR
  • IE Business School

The fragmented stack

Your store runs on five systems. Your team is the glue.

  • Every "Where is my order?" means checking Shopify, then the warehouse, then writing back. Every time.

  • You find out a best-seller is out of stock when sales drop.

  • Every Monday report is an export, a paste, and a hope that the numbers match.

  • You tried ChatGPT. It was clever — and it had never seen one of your orders.

More apps won't fix this. One agent that sees all of it will.

Architecture

One agent. Every system. Real answers.

  1. Ask, don't dig.

    "Which orders are late, and why?" Your team asks in Slack, WhatsApp or email and gets the answer from live data — not a guess.

  2. Yours, not rented.

    It runs on your own server, and the AI provider is contracted in your name — so you see every cost, and no third-party app sits in the middle keeping a copy of your data.

  3. Nothing changes without a yes.

    We agree up front what it may read, what it may write and who confirms. It starts read-only, and anything that touches orders, prices or stock waits for a person.

Operational topology

Your infrastructure

  • Slack
  • WhatsApp
  • Email

Your server

Your agent

Private core

Read-only by default

  • Shopify
  • Warehouse / ERP
  • Payments
  • Help desk

No strategy decks. No hourly billing. No agent acting on its own.

Fit & qualification

Is this you?

A good fit if…

  • You run a Shopify brand doing €1–5M a year.
  • Your team spends hours a week answering questions your data already knows.
  • You want a working agent, not an AI strategy.

Not a fit if…

  • You're under €1M a year. An agent is unlikely to pay for itself yet — the newsletter is the better start.
  • You want a plan to file away, not a system to run.

Implementation

How it works.

Fixed scope. Fixed price. You know both before you pay.

  1. 0

    30 min · free

    Fit call.

    You tell me what you need. I tell you honestly whether an agent pays off. If it doesn't, you'll hear it from me.

  2. 1

    1–2 weeks max · fixed fee

    Assessment.

    From $2,000 / €2,000credited against the build

    I map your systems and pick the 2–3 tasks where an agent saves the most.

    You get: a written plan with scope, cost and timeline. Yours to keep, even if we stop there.

  3. 2

    fixed price · first result in weeks

    Build.

    I install the agent, connect it to your systems and test it before your team touches it. You know the price before I start.

  4. 3

    monthly

    Run.

    I keep it working, safe and up to date as your store and the AI models change.

Book a free 30-min call

I do every step myself. No account managers, no juniors.

Case study

Things that shipped

Live in 1 week · leisure venue · client name not shared

Staff now ask their booking system in plain English.

I connected a self-hosted, open-source agent to the venue's booking system with 11 tools.

Before:
every question about bookings, revenue or attendance meant going into the booking system.
After:
staff ask the agent in plain English and get live answers.
  • 1 week
  • 11 tools
  • Read-only first

Demo · test store

Watch it answer real store questions

Late orders, low stock, weekly sales.

This is a test store, set up for the demo.

I don't advise on AI agents. I build them.

Javier Pérez working at his desk, with a lake and mountains through the window

I've built and run online stores for 25 years — as an engineer for big retailers, and before that as the founder of my own eCommerce company for six years. So I know both sides: the systems, and the owner who pays for them.

My own sites and projects run on the same agents and connectors I install for clients. I use them first.

Based in Zug, Switzerland. Working in English and in Spanish with stores in Europe, the UK and the US.

More about me →

The newsletter

A daily email I write by hand, and a monthly report on what works.

Every day I write what I learned putting AI agents into real operations — short, personal, and no AI wrote a word of it. Once a month, a report on the systems and patterns an online store can copy, with what they cost and what they saved.

The daily email and the monthly report, one list. Unsubscribe in one click.

FAQ

Questions store owners ask

Is my data safe?
The agent runs on your own server, and the AI provider is contracted in your name. Your data goes to that provider and nowhere else: no third-party app sits in the middle keeping a copy, and every cost shows up on your own bill.
What if the AI gets something wrong?
Before anything is built we agree what it may read, what it may write, and who confirms. It starts read-only, and anything that would change orders, prices or stock waits for a person to approve it.
Do I need a technical team?
No. I install it, connect it to your systems and test it before your team sees it. Keeping it running afterwards is the monthly step, and that is my job too.
We've been burned by an agency before.
Fixed price and written scope, so the estimation risk is mine, not yours. The assessment plan is yours to keep even if you never build with me.
How is this different from an AI consultant with a strategy deck?
You end up with an agent running against your systems. The only document is the assessment plan, and it exists to be built.
We already use ChatGPT. Why isn't that enough?
It can be connected — ChatGPT speaks the same protocol (MCP) the agent I install uses. What it doesn't do on its own is the connecting: mapping your store, warehouse and payments, deciding what it may read and write, who approves what, and keeping all of that working as your systems change. That is the work, and it runs on your own server rather than inside someone's chat account.
Do you replace our support and marketing apps?
No. The agent reads what you already use; your apps stay where they are.
How much does it cost?
The assessment is a fixed fee from $2,000 / €2,000, credited against the build if you go ahead. The build is quoted in that plan, also fixed. No hourly billing.
My store makes less than €1M a year.
An agent is unlikely to pay for itself yet, and I'll say so. The newsletter is the better start, and it's free. Subscribe →

Find out in 30 minutes if an agent pays off in your store.

Free call. You tell me what you need. If an agent can't fix it, I'll tell you.

Book a free 30-min call

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