z/S SYSTEMS · Company
z/S SYSTEMS, French SASU (SIREN 130 305 865), builds L'Oracle z/S on the Claude API.
z/S SYSTEMS is a French company (SASU) that builds L'Oracle z/S on the Claude API. This page exists so that partners, banks and programmes can verify who we are in one place.
Company record
| Legal name | z/S SYSTEMS |
| Legal form | SASU (French simplified joint-stock company, single shareholder) |
| Incorporated | 23 September 2026 · Arles, France |
| SIREN | 130 305 865 · RCS Tarascon |
| EU VAT | FR41130305865 (active in VIES) |
| D-U-N-S | 288327246 |
| Share capital | 433.00 EUR |
| President and founder | Aurélien Poirson, writing as Zoé Sagan |
| Website | zoesagan.com is the company's website and trading name |
Legal notice (French) · French public company register
What we build
From a birth date, L'Oracle z/S computes exact sky positions and writes a personal book in a literary voice. Every reading separates what is measured (computed ephemerides) from what is interpreted. The engine runs on the Claude API. It is live on the web at zoesagan.com, and the iOS and Android apps are in beta testing.
A company run with Claude
Claude does not only power the product. It runs the company's customer support, publishing and operations, under the founder's direction.
Why the name
Zoé Sagan is the pen name of the founder, author of the INFOFICTION trilogy (Robert Laffont). The company carries the idea behind the books: the writer and the machine, perfectly coordinated.
Measured and predicted
We follow the same principle Anthropic applied to the sky in ultraviolet light: say, point by point, what is measured and what is predicted. Read Anthropic's announcement.
z/S SYSTEMS · HYPOTHESIS · PROPHECY · NUMBER