About

AI agents are entering the financial system. Without control, that is a risk. With it, an opportunity.

Companies are handing real work to AI agents, and an old question returns: who watches the money? Agents can research, plan and negotiate, but the moment they need to pay, teams paste corporate cards into prompts. No limits, no trace, no control.

Quaestrum is the control layer between your agents and your money, built agent-first rather than retrofitted: deterministic policy enforcement, an append only audit trail, and mandates a human authorises once via strong customer authentication. The name is the mission: two thousand years ago, the quaestors guarded the treasury of Rome so that power could be delegated safely. Same job, new economy.

Why a control layer, not a bank

Banks hold money. We govern what agents do with it.

Accounts, cards and compliance sit with a licensed European banking partner. We build the layer that did not exist, and we never touch customer funds. That is not a limitation, it is the architecture.

Licensed rails, by design

Business accounts, virtual Visa cards and KYB come from a regulated EU partner. Every heavy, licensed piece sits where regulators expect it.

Policy before execution

Every agent action passes deterministic rules before anything moves. The model can ask for anything, the engine decides.

Append only audit trail

Every intent, decision and execution is recorded and exportable. Built for accountants, auditors and the EU AI Act from day one.

Partner backed today, rail agnostic tomorrow

We launch on one licensed partner and keep the control layer independent, so a second rail can dock without rebuilding anything.

Team

Built in Germany. Building in public.

Quaestrum was founded by David Börger and is built together with Peanuds, a licensed European banking infrastructure provider. The first hires join from the current round.

Founding Engineer

Remote · Europe

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Compliance Lead

Remote · Europe · part time to start

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Give your agents a budget. Not your credit card.

We onboard a small group of agent builders and AI agencies first.

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