agent.berlin

AI agents · Berlin

Everyone talks AI. We build the agents that work.

Custom AI agents for your business — designed, built, and run by one engineer who ships. EU-AI-Act- and GDPR-compliant by construction, built in Berlin and hosted in the EU.

See what we build Free AI-Act check

How we work

Understand. Build. Operate.

No slide decks that gather dust. We map the one workflow worth automating, ship a working agent, and keep it running — compliant, monitored, and yours.

01

Understand

We find the one workflow where an agent pays for itself — and check where the AI Act and GDPR apply before a line of code is written.

02

Build

A working agent in weeks, not quarters. Built on a reusable chassis, so you pay for your problem — not our boilerplate.

03

Operate

Agents drift. We monitor, document, and hold the compliance line — governance built into the product, not bolted on after.

Why we're fast

Build once. Reuse everywhere.

Four production products share one engineering core — auth, tenancy, tracing, governance. Your agent starts on top of that core, not from an empty repository. That is how a boutique of one ships what agencies quote in quarters.

Proof of work

Four products. Built and run by one person.

Not a portfolio of mockups — live, multi-tenant software in production. Including an EU-AI-Act governance platform and an AI research engine.

EU AI Act

The AI Act isn’t a risk. It’s your head start.

From 2 August 2026 most obligations bite. Companies that treated compliance as an afterthought will scramble; the ones who built it in will ship with confidence. Every agent we build is classified, documented, and governed from day one — so the regulation becomes an advantage you own, not a wall you hit. And it never travels alone: almost every agent touches personal data, so GDPR rides with it — which is why we build for both at once.

  1. 02.02.2025 Prohibited practices · AI literacy
  2. 02.08.2025 General-purpose AI rules
  3. 02.08.2026 Main obligations apply

Data sovereignty & GDPR

Your data stays yours — and in the EU.

The AI Act governs the system; GDPR governs the data — and almost every useful agent touches personal data. So we engineer data protection the same way we engineer compliance: from the first line, never bolted on. The model runs on an EU-resident endpoint, nothing is retained, and your data is never used to train it — and you choose how close to home the whole agent runs.

Bound by professional secrecy?

For lawyers, tax advisors and doctors, § 203 StGB doesn’t bend for AI: run privileged data through a consumer chatbot and you can breach it. Our agents keep that data on an EU-resident, zero-retention endpoint — or never let it leave your own hardware. The duty of confidentiality stays intact — the line between an AI you’re not allowed to use and one you are.

Where it runs

Runs in your cloud. On your terms.

From a managed EU endpoint to your own hardware — the same agent, four ways to deploy it. Pick what your data policy needs; move between tiers later without a rebuild.

  1. T1

    EU Managed

    Our EU-resident, zero-retention endpoint (Azure Sweden Central). Fastest to ship — nothing retained, never used for training.

    EU region
  2. T2

    Your cloud

    Deployed inside your own AWS, Azure, or Google tenant — your account, your identity, your controls. The data never leaves it.

    Your account
  3. T3

    Private

    A dedicated, network-isolated model endpoint in your own VPC — for regulated data that can’t sit on shared inference.

    Your VPC
  4. T4

    On-premise

    Open-weight models on your own hardware. No external call is ever made — nothing leaves the building.

    Your hardware

Start here

Does your project fall under the AI Act?

A quick three-step check — your industry, your systems, and where the gaps are — with an instant compliance score and the duties that follow. Powered by AI-Agentree, our own EU-AI-Act platform.

Take the free check →

Services

One free check. Five ways to work together.

Fixed scope, not open-ended day rates. For context: a mid-level AI engineer runs €70–90k a year, and an agency build is quoted in six figures — and every tier below starts with the free check.

  1. S0

    AI-Act Quick Check

    Two minutes: does your project fall under the AI Act, and at what risk tier?

    Free
  2. S1

    Clarity

    A paid assessment that ends with a build plan, not a deck. Advice that ships.

    from €5,900
  3. S2

    Build an agent

    A working pilot on your own data and workflow, in weeks.

    from €18,000
  4. S3

    Into production

    Hardened, monitored, and documented for audit.

    from €45,000
  5. S4

    AI Delivery Lead

    A fractional lead who owns your AI initiatives and the compliance lifecycle.

    from €3,900/mo
  6. S5

    Workshop

    A team day: what to automate, and what the AI Act means for you.

    from €4,900/day

The scene

The Berlin Agent Index.

We’re also mapping who is building agents in Berlin — startups, MCP servers, and studios, competitors included. A machine-readable index, and a monthly note on what’s shipping. Launching soon.

Get on the list →

Let’s talk

Let’s talk about your agent.

Tell me the workflow that’s eating your team’s time. If an agent fits, I’ll show you how — starting with the free AI-Act check.

Take the free check → Email me

Who builds this

Built by Dieter Stölzel.

Solo engineer and founder in Berlin. I designed, built, and operate the four products above. Hire agent.berlin and you work directly with the principal who owns the build end-to-end — no account managers, no offshore hand-off, every deliverable documented to outlast the engagement.

agent.berlin — Inhaber: Dieter Stölzel, Berlin.