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Damien Chapus · Antibes, France

HORIZON BUILDER

Artificial intelligence, on your premises.
Not someone else's.

I study your company's processes in depth, then deploy AI agents and an LLM installed on your own servers: tailored automation, confidential end to end.

  • 0data sent outside
    your walls
  • 100%local, on
    your server
  • −50%for club
    members
  • Meeting transcription
  • Document reading
  • E-mail triage
  • Bookkeeping reconciliation
  • Prospecting
  • Writing
  • Video editing
  • Multi-network publishing
  • Monitoring
  • Reporting

Horizon Builder

AI tools that run wherever their user is — and keep nothing.

Local

The models run on your machine or your server. Nothing goes to a third-party cloud.

Sovereign

You own the tool, the code and the data. No subscription holding you hostage.

Transparent

Every tool does what it says, and we show you how.

For small and mid-sized businesses

Tailored automation,
not another licence.

The big AI suites are billed per user, every month — a budget many small businesses don't have — for a generic assistant that knows neither your procedures, nor your software, nor your trade. Automating a company is an architect's job: it starts with understanding how the company works.

  1. 01 In-depth study Time inside your company: interviews, field observation, a tool inventory. Every process is mapped, at every level — from production to admin.
  2. 02 Process architecture and engineering Working methods are redesigned before anything is automated: what gets simpler, what gets automated, what stays human. Costed in hours saved, before a single line of code.
  3. 03 AI agents and an LLM, deployed on site A server on your premises, a language model running on it, and agents built for your procedures, connected to your software. No calls to the outside.
  4. 04 Support and continuous improvement Your teams are trained, the agents measured and tuned. The system is yours — no per-user subscription.
YOUR COMPANY AI agents · local LLM E-mailQuotes AccountsCRM

At every level of the company

  • Production
  • Logistics
  • Quality
  • Purchasing
  • Sales
  • Customer service
  • Accounting
  • Human resources
  • Management

A generic AI licence, or a tailored study?

 Generic AI licenceHorizon Builder
CostA subscription per user, every monthA costed project, then a system you own
What it doesA general-purpose assistant, the same for everyoneAgents built for your procedures and your software
Your dataProcessed on the vendor's serversProcessed on your server, nowhere else
Your organisationEveryone uses it their own wayWorking methods formalised, then automated

What it looks like, for real

Automations already running — on our own tools first

Marketing · Mixprism

A marketing agency that publishes on its own

The need
Editing videos, adapting them to each network, publishing every day, tracking results: a full communications workload.
What runs
Automatic video editing, editorial calendar, publishing to YouTube, TikTok, Instagram and other networks, results tracking — a human approves.
Measured
3 TikTok posts a day, 34 published out of 34 with no intervention (check of 15/09/2026) · 6 Instagram trials a day

B2B prospecting · Hivernago

Prospecting that prepares and sends itself

The need
Finding the companies in a sector, checking they are a good fit, finding the right address, writing and following up: days of work.
What runs
Company collection from public data, automatic zoning checks, address discovery and validation, daily sends with results tracking.
Measured
4,880 companies collected and qualified · 250 SMBs targeted across 6 towns · autonomous daily sends (September 2026)

Documents · VirtualHost.ai

Minutes written without sending anything

The need
Re-listening to a works-council meeting, identifying who speaks, writing compliant minutes: long work, and sensitive recordings.
What runs
Transcription, speaker identification and minute-writing, entirely on the user's own computer.
Measured
0 recordings sent off the computer — it is the very architecture of the software, sold in production
0data sent to a third-party cloud
100%of processing on your server, even offline
Youown the code, the server and the models
GDPRby design: what never leaves can't leak

How much can your company win back?

Adjust to your team: the calculation is done for you, over a working year.

Every year, you win back

0 working hours

0 € of time given back to your team

  • That is, in full-time positions0
  • What generic licences would cost per year0 €

Indicative estimate (47 working weeks, 1,607 h per full-time position). The study measures your real figures, role by role.

Request a study of my processes

Describe your business and what takes up your time: I'll get back to you to talk it through, with no commitment.

Club member: −50% on development and subscriptions

Your details are only used to reply to you. No resale, no forced newsletter.

Work

Already running.

Proof by use: software in production, designed and maintained by one person with AI as the production tool. Published by Damien Chapus EI, computer programming, since 2023.

In service

Mixprism

A complete marketing agency, automated. From strategy to measurement: video creation and editing, editorial calendar, publishing on every network, e-mail and ad campaigns, results analysis — the machine executes, a human decides.

  • Strategy
  • Video editing
  • Live streaming
  • Multi-network publishing
  • Campaigns
  • Measurement
On sale

VirtualHost.ai

Works-council minutes written locally: transcription, speaker identification, compliant minutes. No recording ever leaves the computer.

virtualhost.ai →
Live

SphereFlow

Automated prospecting: targets drawn from public data, an explained score, verified addresses, sent from your own mailbox.

sphereflow.eu →
Launching

Hivernago

Storage and wintering for boats and camper vans on the French Riviera, direct contact.

hivernago.fr →
Launching

Séjours Privés

Book the family house, or a friend's, with the comfort of a platform and no commission.

sejoursprives.com →
In progress

UpMyChain

A services marketplace where contribution, not capital, opens the door.

The lab

Internal test benches, in a simulated environment. Nothing here is for sale.

Simulation · internal use

Latence Lab

Simulation · internal use

Complexity Lab

Prototype

PHOS

The club · free membership

Member, or visitor.

There is only one door. Membership is free, personal and approved by hand — and it halves the price of everything else.

  • Free, no commitment
  • Personal, signed, verifiable
  • Erasable in one click

Visitor

0%

discount. The public price.

  • The tools open to all: The Radar, Fact-checks, THOTH, the Insight France overview
  • Development and subscriptions at full price
  • New tools when they go public — if they do
Free · approved by hand

Club member

−50%

On development and on subscriptions to Horizon Builder tools.

  • −50% on audits, automation and custom development
  • −50% on subscriptions to Horizon Builder's public tools
  • Free tools, opened to members one by one
  • New tools first, and your feedback decides what comes next
  • A signed personal card anyone can verify
  • A direct answer — I read everything myself
Request my card →

The tools

Public sources, cited and made readable. Some are open to all; the others open with the card.

Open to all

Open to all

The Radar

What platforms take down in France, measured every night.

Open →
Open to all

Fact-checks

Who has already checked a claim, and what they concluded.

Open →
Open reading

THOTH

The registry of discoveries, signed and dated for good.

Open →
Open overview

Insight France

State money and the real country, in sourced charts.

Open →

With the membership card

Members

OSIRIS

A live watch on the world, on a single map.

Members

HORUS

Bare ground seen by laser, without the forest that hides it.

Members

The file & the law

A company or an address run through public data; French law, word for word.

Members

VIGIE & Cockpit

Household finances and the mailbox, run locally. Member versions in preparation.

More tools join the list month after month — members get them first.

Free. Approved by hand. Erasable in one click.

Every membership is approved by the administrator; you then receive the link to your card, with no password. Membership is stored encrypted, in the European Union.

Become a member →

Who builds

Damien Chapus

Seven years of sales work with companies of every size taught me what a poorly tooled process costs. I build alone, with AI as the production tool at every step — which is how I deliver fast, and leave you owning what is delivered.

The business

Damien Chapus EI — computer programming (APE 62.01Z), registered in Antibes since May 2023.

The method

AI writes, tests and documents; a human decides what deserves to exist.

The limit

No fundraising, no resale of data.