We build the tools for collectors and sellers
It reads “The Hobbit, Allen & Unwin, 1937, first impression, dust jacket, near fine” and puts it at €60,000.
It reads “The Hobbit, Allen & Unwin, 1937, first impression, dust jacket, near fine” and puts it at €60,000.
Pergament AS makes AI agents for the collecting world, each one built for a single job. Kistarium is our own platform for collectors. The same agents go to work for booksellers, dealers and marketplaces, on their stock and under their name.
One set of agents that read, grade and value collectables, and three ways to put them to work.
Our platform for collectors of books, stamps, coins, cards, art, music and beverages. A photograph becomes a graded, catalogued, valued entry; every valuation is kept, so a collection carries its value over time.
On top of the catalogue: a portfolio, public and private sharing, wanted-list matching and a marketplace between private collectors.
Open KistariumUnlisted stock turns into described, priced entries: edition points, condition notes and comparables written the way your customers read them.
Delivered as a feed into your shop system or as a workspace of its own.
Talk to usIdentification, condition reports and estimates from a photograph, built into the way you already sell and running under your own name.
Every engagement starts with a conversation about your stock.
Talk to usWe don't build a model. We build agents, and each one is made for a single task. One reads the photograph. One fills in the fields a cataloguer would fill in. One prices the item against the live market. One digs through completed sales for what it fetched before.
That narrowness is the point. Ask a general assistant about a perforation gauge and it will cheerfully invent one. Our agents work from a schema for the field they serve, carry the tools to check themselves, and hand back the evidence along with the answer.
Each agent runs on its own budget and reports what it spent, so a run reads back line by line. You pay for work that was done, not for a seat.
Jan designed and built the whole of Kistarium: every agent, the catalogue, the marketplace and the metering that keeps AI usage honest. He works from Germany.
Jarle runs the company and its commercial side — partners, pricing, and the collectors, booksellers and traders the work is built for. He works from Mauranger, on the Hardangerfjord.
Write to us in English, Norwegian, German or Swedish.
Published pursuant to the Norwegian E-Commerce Act (ehandelsloven) § 8. Pergament AS, organisasjonsnummer 938 218 188, registered in the Norwegian Register of Business Enterprises (Foretaksregisteret). Responsible editor: Jarle Knutsson Øvrehus (Managing Director), at the address alongside. The e-mail address is our single point of contact for users and for authorities under the EU Digital Services Act (Regulation (EU) 2022/2065, Arts. 11 and 12). Content is prepared with care; we accept no liability for its accuracy beyond what Norwegian law requires, and none for linked third-party sites. Our content is protected under the Norwegian Copyright Act (åndsverkloven).