prüfr
This page describes a product we are currently validating with selected awarding authorities. It is not a live product on sale. No demo, no licence, no pricing — a structured pilot conversation instead.
The problem
An unclear construction specification rebounds after publication: bidder queries pile up, change orders become inevitable, and in the worst case a formal challenge follows. VOB/A requires a clear and exhaustive specification — and it is cheapest to check before the documents go out.
Our approach — in validation
What prüfr is meant to do, stated honestly from the current state of validation:
prüfr reads your tender documents before publication and checks the bill of quantities for contradictions, missing items, inconsistent terms, and gaps against the VOB/A mandatory contents. Constructively, with one goal: a clear and exhaustive call for tenders before it goes out the door.
The pilot partners we are looking for
We are looking for a small number of pilot partners, not a marketing wave. Public-sector construction awarding authorities that procure regularly and can invest a short pilot period together with us. The format: a first conversation, a clear pilot scope, mutual commitment.
Frequently asked questions
What is prüfr?▾
prüfr is a product concept for awarding authorities: it reads tender documents before publication and checks the bill of quantities for contradictions, missing items, inconsistent terms, and gaps.
Why check tender documents before publication?▾
Because ambiguities take their toll after publication: bidder questions pile up and the incoming bids become hard to compare. Ambiguities are cheapest to fix before the documents go out the door.
Is prüfr already available?▾
prüfr is a concept in validation. We are looking for pilot awarding authorities to help shape pre-publication document review — you can register interest via the pilot form.
Is prüfr part of BlackSwanAI?▾
Yes. prüfr is a concept by BlackSwanAI UG from Erlangen and covers the Check phase of the tender lifecycle — alongside auftragr (Find), kalkulr (Evaluate), and zuschlagr (Award).
Register pilot interest
No waitlist theatrics. A form for a qualified first conversation.